openwrt/staging/blogic.git
6 years agoMerge branch 'topic/owl' into for-linus
Vinod Koul [Wed, 24 Oct 2018 08:16:18 +0000 (09:16 +0100)]
Merge branch 'topic/owl' into for-linus

6 years agoMerge branch 'topic/of' into for-linus
Vinod Koul [Wed, 24 Oct 2018 08:16:14 +0000 (09:16 +0100)]
Merge branch 'topic/of' into for-linus

6 years agoMerge branch 'topic/mv' into for-linus
Vinod Koul [Wed, 24 Oct 2018 08:16:08 +0000 (09:16 +0100)]
Merge branch 'topic/mv' into for-linus

6 years agoMerge branch 'topic/jz' into for-linus
Vinod Koul [Wed, 24 Oct 2018 08:16:04 +0000 (09:16 +0100)]
Merge branch 'topic/jz' into for-linus

6 years agoMerge branch 'topic/intel' into for-linus
Vinod Koul [Wed, 24 Oct 2018 08:15:59 +0000 (09:15 +0100)]
Merge branch 'topic/intel' into for-linus

6 years agoMerge branch 'topic/fsl' into for-linus
Vinod Koul [Wed, 24 Oct 2018 08:15:52 +0000 (09:15 +0100)]
Merge branch 'topic/fsl' into for-linus

6 years agoMerge branch 'topic/dw' into for-linus
Vinod Koul [Wed, 24 Oct 2018 08:15:48 +0000 (09:15 +0100)]
Merge branch 'topic/dw' into for-linus

6 years agoMerge branch 'topic/dmam' into for-linus
Vinod Koul [Wed, 24 Oct 2018 08:15:43 +0000 (09:15 +0100)]
Merge branch 'topic/dmam' into for-linus

6 years agoMerge branch 'topic/dirn_remove' into for-linus
Vinod Koul [Wed, 24 Oct 2018 08:15:37 +0000 (09:15 +0100)]
Merge branch 'topic/dirn_remove' into for-linus

6 years agoMerge branch 'topic/at' into for-linus
Vinod Koul [Wed, 24 Oct 2018 08:15:32 +0000 (09:15 +0100)]
Merge branch 'topic/at' into for-linus

6 years agodmaengine: ppc4xx: fix off-by-one build failure
Christian Lamparter [Sun, 14 Oct 2018 21:28:50 +0000 (23:28 +0200)]
dmaengine: ppc4xx: fix off-by-one build failure

There are two poly_store, but one should have been poly_show.

|adma.c:4382:16: error: conflicting types for 'poly_store'
| static ssize_t poly_store(struct device_driver *dev, const char *buf,
|                ^~~~~~~~~~
|adma.c:4363:16: note: previous definition of 'poly_store' was here
| static ssize_t poly_store(struct device_driver *dev, char *buf)
|                ^~~~~~~~~~

CC: stable@vger.kernel.org
Fixes: 13efe1a05384 ("dmaengine: ppc4xx: remove DRIVER_ATTR() usage")
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: owl: Fix warnings generated during build
Manivannan Sadhasivam [Mon, 8 Oct 2018 17:16:31 +0000 (22:46 +0530)]
dmaengine: owl: Fix warnings generated during build

Following warnings are generated when compiled with W=1,

drivers/dma/owl-dma.c:170: warning: Function parameter or member 'cyclic'
not described in 'owl_dma_txd'
drivers/dma/owl-dma.c:198: warning: Function parameter or member 'cfg' not
described in 'owl_dma_vchan'
drivers/dma/owl-dma.c:198: warning: Function parameter or member 'drq' not
described in 'owl_dma_vchan'
drivers/dma/owl-dma.c:225: warning: Function parameter or member 'irq' not
described in 'owl_dma'

Fix this by adding comments for relevant struct members to appear in
kernel-doc.

Fixes: d64e1b3f5cce ("dmaengine: owl: Add Slave and Cyclic mode support for
Actions Semi Owl S900 SoC")

Reported-by: Vinod Koul <vinod.koul@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: fsl-edma: remove dma_slave_config direction usage
Vinod Koul [Sun, 7 Oct 2018 14:12:56 +0000 (19:42 +0530)]
dmaengine: fsl-edma: remove dma_slave_config direction usage

dma_slave_config direction was marked as deprecated quite some
time back, remove the usage from this driver so that the field
can be removed

Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
Tested-by: Angelo Dureghello <angelo@sysam.it>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: mmp_tdma: remove dma_slave_config direction usage
Vinod Koul [Thu, 19 Jul 2018 16:52:26 +0000 (22:22 +0530)]
dmaengine: mmp_tdma: remove dma_slave_config direction usage

dma_slave_config direction was marked as deprecated quite some
time back, remove the usage from this driver so that the field
can be removed

Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: ep93xx_dma: remove dma_slave_config direction usage
Vinod Koul [Thu, 19 Jul 2018 16:52:26 +0000 (22:22 +0530)]
dmaengine: ep93xx_dma: remove dma_slave_config direction usage

dma_slave_config direction was marked as deprecated quite some
time back, remove the usage from this driver so that the field
can be removed

Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: k3dma: remove dma_slave_config direction usage
Vinod Koul [Thu, 19 Jul 2018 16:52:26 +0000 (22:22 +0530)]
dmaengine: k3dma: remove dma_slave_config direction usage

dma_slave_config direction was marked as deprecated quite some
time back, remove the usage from this driver so that the field
can be removed

Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: k3dma: dont use direction for memcpy
Vinod Koul [Fri, 5 Oct 2018 01:02:12 +0000 (06:32 +0530)]
dmaengine: k3dma: dont use direction for memcpy

Memcpy has no direction (copy from memory to memory) so remove the check
in prep_memcpy()

Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: imx-dma: remove dma_slave_config direction usage
Vinod Koul [Thu, 19 Jul 2018 16:52:26 +0000 (22:22 +0530)]
dmaengine: imx-dma: remove dma_slave_config direction usage

dma_slave_config direction was marked as deprecated quite some
time back, remove the usage from this driver so that the field
can be removed

Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: idma: remove dma_slave_config direction usage
Vinod Koul [Thu, 19 Jul 2018 16:52:26 +0000 (22:22 +0530)]
dmaengine: idma: remove dma_slave_config direction usage

dma_slave_config direction was marked as deprecated quite some
time back, remove the usage from this driver so that the field
can be removed

Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: hsu: remove dma_slave_config direction usage
Vinod Koul [Thu, 19 Jul 2018 16:52:26 +0000 (22:22 +0530)]
dmaengine: hsu: remove dma_slave_config direction usage

dma_slave_config direction was marked as deprecated quite some
time back, remove the usage from this driver so that the field
can be removed

Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dw: remove dma_slave_config direction usage
Vinod Koul [Thu, 19 Jul 2018 16:52:26 +0000 (22:22 +0530)]
dmaengine: dw: remove dma_slave_config direction usage

dma_slave_config direction was marked as deprecated quite some
time back, remove the usage from this driver so that the field
can be removed

Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: jz4740: remove dma_slave_config direction usage
Vinod Koul [Thu, 19 Jul 2018 16:52:26 +0000 (22:22 +0530)]
dmaengine: jz4740: remove dma_slave_config direction usage

dma_slave_config direction was marked as deprecated quite some
time back, remove the usage from this driver so that the field
can be removed

Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: coh901318: remove dma_slave_config direction usage
Vinod Koul [Thu, 19 Jul 2018 16:52:26 +0000 (22:22 +0530)]
dmaengine: coh901318: remove dma_slave_config direction usage

dma_slave_config direction was marked as deprecated quite some
time back, remove the usage from this driver so that the field
can be removed

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: bcm2835: remove dma_slave_config direction usage
Vinod Koul [Thu, 19 Jul 2018 16:52:26 +0000 (22:22 +0530)]
dmaengine: bcm2835: remove dma_slave_config direction usage

dma_slave_config direction was marked as deprecated quite some
time back, remove the usage from this driver so that the field
can be removed

Acked-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: at_hdmac: remove dma_slave_config direction usage
Vinod Koul [Thu, 19 Jul 2018 16:52:26 +0000 (22:22 +0530)]
dmaengine: at_hdmac: remove dma_slave_config direction usage

dma_slave_config direction was marked as deprecated quite some
time back, remove the usage from this driver so that the field
can be removed

Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: owl: Add Slave and Cyclic mode support for Actions Semi Owl S900 SoC
Manivannan Sadhasivam [Sat, 29 Sep 2018 07:46:36 +0000 (13:16 +0530)]
dmaengine: owl: Add Slave and Cyclic mode support for Actions Semi Owl S900 SoC

Add Slave and Cyclic mode support for Actions Semi Owl S900 SoC. The slave
mode supports bus width of 4 bytes common for all peripherals and 1 byte
specific for UART.

The cyclic mode supports only block mode transfer.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: ioat: fix prototype of ioat_enumerate_channels
Rami Rosen [Thu, 4 Oct 2018 21:03:10 +0000 (00:03 +0300)]
dmaengine: ioat: fix prototype of ioat_enumerate_channels

Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: timb_dma: Use proper enum in td_prep_slave_sg
Nathan Chancellor [Tue, 11 Sep 2018 23:20:25 +0000 (16:20 -0700)]
dmaengine: timb_dma: Use proper enum in td_prep_slave_sg

Clang warns when implicitly converting from one enumerated type to
another. Avoid this by using the equivalent value from the expected
type.

drivers/dma/timb_dma.c:548:27: warning: implicit conversion from
enumeration type 'enum dma_transfer_direction' to different enumeration
type 'enum dma_data_direction' [-Wenum-conversion]
                td_desc->desc_list_len, DMA_MEM_TO_DEV);
                                        ^~~~~~~~~~~~~~
1 warning generated.

Reported-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: ep93xx: Return proper enum in ep93xx_dma_chan_direction
Nathan Chancellor [Tue, 11 Sep 2018 23:40:20 +0000 (16:40 -0700)]
dmaengine: ep93xx: Return proper enum in ep93xx_dma_chan_direction

Clang warns when implicitly converting from one enumerated type to
another. Avoid this by using the equivalent value from the expected
type.

In file included from drivers/dma/ep93xx_dma.c:30:
./include/linux/platform_data/dma-ep93xx.h:88:10: warning: implicit
conversion from enumeration type 'enum dma_data_direction' to different
enumeration type 'enum dma_transfer_direction' [-Wenum-conversion]
                return DMA_NONE;
                ~~~~~~ ^~~~~~~~
1 warning generated.

Reported-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodriver/dma/ioat: Call del_timer_sync() without holding prep_lock
Waiman Long [Fri, 14 Sep 2018 18:53:32 +0000 (14:53 -0400)]
driver/dma/ioat: Call del_timer_sync() without holding prep_lock

The following lockdep splat was observed:

[ 1222.241750] ======================================================
[ 1222.271301] WARNING: possible circular locking dependency detected
[ 1222.301060] 4.16.0-10.el8+5.x86_64+debug #1 Not tainted
[ 1222.326659] ------------------------------------------------------
[ 1222.356565] systemd-shutdow/1 is trying to acquire lock:
[ 1222.382660]  ((&ioat_chan->timer)){+.-.}, at: [<00000000f71e1a28>] del_timer_sync+0x5/0xf0
[ 1222.422928]
[ 1222.422928] but task is already holding lock:
[ 1222.451743]  (&(&ioat_chan->prep_lock)->rlock){+.-.}, at: [<000000008ea98b12>] ioat_shutdown+0x86/0x100 [ioatdma]
   :
[ 1223.524987] Chain exists of:
[ 1223.524987]   (&ioat_chan->timer) --> &(&ioat_chan->cleanup_lock)->rlock --> &(&ioat_chan->prep_lock)->rlock
[ 1223.524987]
[ 1223.594082]  Possible unsafe locking scenario:
[ 1223.594082]
[ 1223.622630]        CPU0                    CPU1
[ 1223.645080]        ----                    ----
[ 1223.667404]   lock(&(&ioat_chan->prep_lock)->rlock);
[ 1223.691535]                                lock(&(&ioat_chan->cleanup_lock)->rlock);
[ 1223.728657]                                lock(&(&ioat_chan->prep_lock)->rlock);
[ 1223.765122]   lock((&ioat_chan->timer));
[ 1223.784095]
[ 1223.784095]  *** DEADLOCK ***
[ 1223.784095]
[ 1223.813492] 4 locks held by systemd-shutdow/1:
[ 1223.834677]  #0:  (reboot_mutex){+.+.}, at: [<0000000056d33456>] SYSC_reboot+0x10f/0x300
[ 1223.873310]  #1:  (&dev->mutex){....}, at: [<00000000258dfdd7>] device_shutdown+0x1c8/0x660
[ 1223.913604]  #2:  (&dev->mutex){....}, at: [<0000000068331147>] device_shutdown+0x1d6/0x660
[ 1223.954000]  #3:  (&(&ioat_chan->prep_lock)->rlock){+.-.}, at: [<000000008ea98b12>] ioat_shutdown+0x86/0x100 [ioatdma]

In the ioat_shutdown() function:

spin_lock_bh(&ioat_chan->prep_lock);
set_bit(IOAT_CHAN_DOWN, &ioat_chan->state);
del_timer_sync(&ioat_chan->timer);
spin_unlock_bh(&ioat_chan->prep_lock);

According to the synchronization rule for the del_timer_sync() function,
the caller must not hold locks which would prevent completion of the
timer's handler.

The timer structure has its own lock that manages its synchronization.
Setting the IOAT_CHAN_DOWN bit should prevent other CPUs from
trying to use that device anyway, there is probably no need to call
del_timer_sync() while holding the prep_lock. So the del_timer_sync()
call is now moved outside of the prep_lock critical section to prevent
the circular lock dependency.

Signed-off-by: Waiman Long <longman@redhat.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: mcf-edma: avoid warning for wrong pointer cast
Angelo Dureghello [Fri, 14 Sep 2018 19:13:48 +0000 (21:13 +0200)]
dmaengine: mcf-edma: avoid warning for wrong pointer cast

This patch fixes the following compilation warning
reported during x86_64 allmodconfig build:

  drivers/dma/mcf-edma.c: In function 'mcf_edma_filter_fn':
  drivers/dma/mcf-edma.c:296:33: warning: cast from pointer to
integer of different size [-Wpointer-to-int-cast]
        return (mcf_chan->slave_id == (u32)param);

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Angelo Dureghello <angelo@sysam.it>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: idma64: replace spin_lock_irqsave with spin_lock
Zhaoxiong Yuan [Fri, 7 Sep 2018 19:02:10 +0000 (06:02 +1100)]
dmaengine: idma64: replace spin_lock_irqsave with spin_lock

idma64_chan_irq() is invoked in hardirq handle function, it is unnecessary
to call spin_lock_irqsave.

Signed-off-by: Zhaoxiong Yuan <yuanzhx326@gmail.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agoMIPS: JZ4740: DTS: Add DMA nodes
Paul Cercueil [Wed, 29 Aug 2018 21:33:00 +0000 (23:33 +0200)]
MIPS: JZ4740: DTS: Add DMA nodes

Add the devicetree nodes for the DMA core of the JZ4740 SoC, disabled
by default, as currently there are no clients for the DMA driver
(until the MMC driver and/or others get a devicetree node).

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Acked-by: Paul Burton <paul.burton@mips.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agoMIPS: JZ4770: DTS: Add DMA nodes
Paul Cercueil [Wed, 29 Aug 2018 21:32:59 +0000 (23:32 +0200)]
MIPS: JZ4770: DTS: Add DMA nodes

Add the two devicetree nodes for the two DMA cores of the JZ4770 SoC,
disabled by default, as currently there are no clients for the DMA
driver (until the MMC driver and/or others get a devicetree node).

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Acked-by: Paul Burton <paul.burton@mips.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agoMIPS: JZ4780: DTS: Update DMA node to match driver changes
Paul Cercueil [Wed, 29 Aug 2018 21:32:58 +0000 (23:32 +0200)]
MIPS: JZ4780: DTS: Update DMA node to match driver changes

The driver now accepts two memory resources, the first one for the
channel-specific registers, the second one for the controller-specific
registers.

Note that older devicetrees, without this commit, will still work with
the jz4780-dma driver.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dma-jz4780: Use dma_set_residue()
Daniel Silsby [Wed, 29 Aug 2018 21:32:57 +0000 (23:32 +0200)]
dmaengine: dma-jz4780: Use dma_set_residue()

This is the standard method provided by dmaengine header.

Signed-off-by: Daniel Silsby <dansilsby@gmail.com>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dma-jz4780: Further residue status fix
Daniel Silsby [Wed, 29 Aug 2018 21:32:56 +0000 (23:32 +0200)]
dmaengine: dma-jz4780: Further residue status fix

Func jz4780_dma_desc_residue() expects the index to the next hw
descriptor as its last parameter. Caller func jz4780_dma_tx_status(),
however, applied modulus before passing it. When the current hw
descriptor was last in the list, the index passed became zero.

The resulting excess of reported residue especially caused problems
with cyclic DMA transfer clients, i.e. ALSA AIC audio output, which
rely on this for determining current DMA location within buffer.

Combined with the recent and related residue-reporting fixes, spurious
ALSA audio underruns on jz4770 hardware are now fixed.

Signed-off-by: Daniel Silsby <dansilsby@gmail.com>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dma-jz4780: Set DTCn register explicitly
Daniel Silsby [Wed, 29 Aug 2018 21:32:55 +0000 (23:32 +0200)]
dmaengine: dma-jz4780: Set DTCn register explicitly

Normally, we wouldn't set the channel transfer count register directly
when using descriptor-driven transfers. However, there is no harm in
doing so, and it allows jz4780_dma_desc_residue() to report the correct
residue of an ongoing transfer, no matter when it is called.

Signed-off-by: Daniel Silsby <dansilsby@gmail.com>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dma-jz4780: Simplify jz4780_dma_desc_residue()
Daniel Silsby [Wed, 29 Aug 2018 21:32:54 +0000 (23:32 +0200)]
dmaengine: dma-jz4780: Simplify jz4780_dma_desc_residue()

Simple cleanup, no changes to actual logic here.

Signed-off-by: Daniel Silsby <dansilsby@gmail.com>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dma-jz4780: Add missing residue DTC mask
Daniel Silsby [Wed, 29 Aug 2018 21:32:53 +0000 (23:32 +0200)]
dmaengine: dma-jz4780: Add missing residue DTC mask

The 'dtc' word in jz DMA descriptors contains two fields: The
lowest 24 bits are the transfer count, and upper 8 bits are the DOA
offset to next descriptor. The upper 8 bits are now correctly masked
off when computing residue in jz4780_dma_desc_residue(). Note that
reads of the DTCn hardware reg are automatically masked this way.

Signed-off-by: Daniel Silsby <dansilsby@gmail.com>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dma-jz4780: Enable Fast DMA to the AIC
Paul Cercueil [Wed, 29 Aug 2018 21:32:52 +0000 (23:32 +0200)]
dmaengine: dma-jz4780: Enable Fast DMA to the AIC

With the fast DMA bit set, the DMA will transfer twice as much data
per clock period to the AIC, so there is little point not to set it.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Reviewed-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dma-jz4780: Add support for the JZ4725B SoC
Paul Cercueil [Wed, 29 Aug 2018 21:32:51 +0000 (23:32 +0200)]
dmaengine: dma-jz4780: Add support for the JZ4725B SoC

The JZ4725B has one DMA core starring six DMA channels.
As for the JZ4770, each DMA channel's clock can be enabled with
a register write, the difference here being that once started, it
is not possible to turn it off.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Reviewed-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dma-jz4780: Add support for the JZ4740 SoC
Paul Cercueil [Wed, 29 Aug 2018 21:32:50 +0000 (23:32 +0200)]
dmaengine: dma-jz4780: Add support for the JZ4740 SoC

The JZ4740 SoC has a single DMA core starring six DMA channels.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Reviewed-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dma-jz4780: Add support for the JZ4770 SoC
Paul Cercueil [Wed, 29 Aug 2018 21:32:49 +0000 (23:32 +0200)]
dmaengine: dma-jz4780: Add support for the JZ4770 SoC

The JZ4770 SoC has two DMA cores, each one featuring six DMA channels.
The major change is that each channel's clock can be enabled or disabled
through register writes.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dma-jz4780: Don't depend on MACH_JZ4780
Paul Cercueil [Wed, 29 Aug 2018 21:32:48 +0000 (23:32 +0200)]
dmaengine: dma-jz4780: Don't depend on MACH_JZ4780

If we make this driver depend on MACH_JZ4780, that means it can be
enabled only if we're building a kernel specially crafted for a
JZ4780-based board, while most GNU/Linux distributions will want one
generic MIPS kernel that works on multiple boards.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dma-jz4780: Use 4-word descriptors
Paul Cercueil [Wed, 29 Aug 2018 21:32:47 +0000 (23:32 +0200)]
dmaengine: dma-jz4780: Use 4-word descriptors

The only information we use in the 8-word version of the hardware DMA
descriptor that is not present in the 4-word version is the transfer
type, aka. the ID of the source or recipient device.

Since the transfer type will never change for a DMA channel in use,
we can just set it once for all in the corresponding DMA register
before starting any transfer.

This has several benefits:

* the driver will handle twice as many hardware DMA descriptors;

* the driver is closer to support the JZ4740, which only supports 4-word
  hardware DMA descriptors;

* the JZ4770 SoC needs the transfer type to be set in the corresponding
  DMA register anyway, even if 8-word descriptors are in use.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Reviewed-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dma-jz4780: Separate chan/ctrl registers
Paul Cercueil [Wed, 29 Aug 2018 21:32:46 +0000 (23:32 +0200)]
dmaengine: dma-jz4780: Separate chan/ctrl registers

The register area of the JZ4780 DMA core can be split into different
sections for different purposes:

* one set of registers is used to perform actions at the DMA core level,
that will generally affect all channels;

* one set of registers per DMA channel, to perform actions at the DMA
channel level, that will only affect the channel in question.

The problem rises when trying to support new versions of the JZ47xx
Ingenic SoC. For instance, the JZ4770 has two DMA cores, each one
with six DMA channels, and the register sets are interleaved:
<DMA0 chan regs> <DMA1 chan regs> <DMA0 ctrl regs> <DMA1 ctrl regs>

By using one memory resource for the channel-specific registers and
one memory resource for the core-specific registers, we can support
the JZ4770, by initializing the driver once per DMA core with different
addresses.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dma-jz4780: Avoid hardcoding number of channels
Paul Cercueil [Wed, 29 Aug 2018 21:32:45 +0000 (23:32 +0200)]
dmaengine: dma-jz4780: Avoid hardcoding number of channels

As part of the work to support various other Ingenic JZ47xx SoC versions,
which don't feature the same number of DMA channels per core, we now
deduce the number of DMA channels available from the devicetree
compatible string.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dma-jz4780: Return error if not probed from DT
Paul Cercueil [Wed, 29 Aug 2018 21:32:44 +0000 (23:32 +0200)]
dmaengine: dma-jz4780: Return error if not probed from DT

The driver calls clk_get() with the clock name set to NULL, which means
that the driver could only work when probed from devicetree. From now
on, we explicitly require the driver to be probed from devicetree.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodt-bindings: jz4780-dma: Update bindings to reflect driver changes
Paul Cercueil [Wed, 29 Aug 2018 21:32:43 +0000 (23:32 +0200)]
dt-bindings: jz4780-dma: Update bindings to reflect driver changes

The driver now expects the devicetree to supply a second memory
resource. This resource is mandatory on the newly supported SoCs.
For the JZ4780, new devicetree code must also provide it, although the
driver is still compatible with older devicetree binaries.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: fsl-edma: add ColdFire mcf5441x edma support
Angelo Dureghello [Sun, 19 Aug 2018 17:27:16 +0000 (19:27 +0200)]
dmaengine: fsl-edma: add ColdFire mcf5441x edma support

This patch adds support for ColdFire mcf5441x-family edma
module.

The ColdFire edma module is slightly different from fsl-edma,
so a new driver is added. But most of the code is common
between fsl-edma and mcf-edma so it has been collected into a
separate common module fsl-edma-common (patch 1/3).

Signed-off-by: Angelo Dureghello <angelo@sysam.it>
Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: fsl-edma: fix macros
Angelo Dureghello [Sun, 19 Aug 2018 17:27:15 +0000 (19:27 +0200)]
dmaengine: fsl-edma: fix macros

This patch fixes macros to use BIT() and GENMASK(), removing
also some unneeded.

Signed-off-by: Angelo Dureghello <angelo@sysam.it>
Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: fsl-edma: add edma version and configurable registers
Angelo Dureghello [Sun, 19 Aug 2018 17:27:14 +0000 (19:27 +0200)]
dmaengine: fsl-edma: add edma version and configurable registers

This patch adds configurable registers (using __iomem addresses)
to allow the use of fsl-edma-common code with slightly different
edma module versions, as Vybrid (v1) and ColdFire (v2) are.

Signed-off-by: Angelo Dureghello <angelo@sysam.it>
Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: fsl-edma: extract common fsl-edma code (no changes in behavior intended)
Angelo Dureghello [Sun, 19 Aug 2018 17:27:13 +0000 (19:27 +0200)]
dmaengine: fsl-edma: extract common fsl-edma code (no changes in behavior intended)

This patch adds a new fsl-edma-common module to allow new
mcf-edma module code to use most of the fsl-edma code.

Signed-off-by: Angelo Dureghello <angelo@sysam.it>
Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: pxa: fix semicolon.cocci warnings
kbuild test robot [Wed, 29 Aug 2018 21:04:26 +0000 (14:04 -0700)]
dmaengine: pxa: fix semicolon.cocci warnings

 Remove unneeded semicolon.

Generated by: scripts/coccinelle/misc/semicolon.cocci

Signed-off-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: Revert "dmaengine: add COMPILE_TEST for the drivers"
Vinod Koul [Tue, 11 Sep 2018 06:06:33 +0000 (11:36 +0530)]
dmaengine: Revert "dmaengine: add COMPILE_TEST for the drivers"

We have build failures attributed to turning on COMPILE_TEST, so revert
commit 90082cd397aeb: ("dmaengine: add COMPILE_TEST for the drivers")
while we fix these.

Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: at_xdmac: move spin_lock_bh to spin_lock in tasklet
Barry Song [Fri, 17 Aug 2018 13:03:43 +0000 (06:03 -0700)]
dmaengine: at_xdmac: move spin_lock_bh to spin_lock in tasklet

as you are already in a tasklet, it is unnecessary to call spin_lock_bh.

Signed-off-by: Barry Song <21cnbao@gmail.com>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: mv_xor: move spin_lock_bh to spin_lock in tasklet
Barry Song [Fri, 17 Aug 2018 13:02:02 +0000 (06:02 -0700)]
dmaengine: mv_xor: move spin_lock_bh to spin_lock in tasklet

as you are already in a tasklet, it is unnecessary to call spin_lock_bh.

Signed-off-by: Barry Song <21cnbao@gmail.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: fsldma: move spin_lock_bh to spin_lock in tasklet
Barry Song [Fri, 17 Aug 2018 13:00:26 +0000 (06:00 -0700)]
dmaengine: fsldma: move spin_lock_bh to spin_lock in tasklet

as you are already in a tasklet, it is unnecessary to call spin_lock_bh.

Signed-off-by: Barry Song <21cnbao@gmail.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dw: Add alternative ACPI HIDs for Cherry Trail DMA controllers
Hans de Goede [Mon, 27 Aug 2018 07:45:45 +0000 (09:45 +0200)]
dmaengine: dw: Add alternative ACPI HIDs for Cherry Trail DMA controllers

Bay and Cherry Trail DSTDs represent a different set of devices depending
on which OS the device think it is booting. One set of decices for Windows
and another set of devices for Android which targets the Android-x86 Linux
kernel fork (which e.g. used to have its own display driver instead of
using the i915 driver).

Which set of devices we are actually going to get is out of our control,
this is controlled by the ACPI OSID variable, which gets either set through
an EFI setup option, or sometimes is autodetected. So we need to support
both.

This commit adds support for the 80862286 and 808622C0 ACPI HIDs which we
get for the first resp. second DMA controller on Cherry Trail devices when
OSID is set to Android.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: add COMPILE_TEST for the drivers
Huang Shijie [Mon, 6 Aug 2018 08:52:31 +0000 (16:52 +0800)]
dmaengine: add COMPILE_TEST for the drivers

We can do the compiling test with COMPILE_TEST.
This patch adds the COMPILE_TEST for the drivers.

Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: mxs-dma: use dmaenginem_async_device_register to simplify the code
Huang Shijie [Mon, 6 Aug 2018 08:52:30 +0000 (16:52 +0800)]
dmaengine: mxs-dma: use dmaenginem_async_device_register to simplify the code

Use dmaenginem_async_device_register to simplify the code:
remove dma_async_device_unregister.

Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: pxa_dma: use dmaenginem_async_device_register to simplify the code
Huang Shijie [Mon, 6 Aug 2018 08:52:29 +0000 (16:52 +0800)]
dmaengine: pxa_dma: use dmaenginem_async_device_register to simplify the code

Use dmaenginem_async_device_register to simplify the code:
remove dma_async_device_unregister.

Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dma-jz4780: use dmaenginem_async_device_register to simplify the code
Huang Shijie [Mon, 6 Aug 2018 08:52:28 +0000 (16:52 +0800)]
dmaengine: dma-jz4780: use dmaenginem_async_device_register to simplify the code

Use dmaenginem_async_device_register to simplify the code:
remove dma_async_device_unregister.
remove label err_unregister_dev

Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: ste_dma40: use dmaenginem_async_device_register to simplify the code
Huang Shijie [Mon, 6 Aug 2018 08:52:27 +0000 (16:52 +0800)]
dmaengine: ste_dma40: use dmaenginem_async_device_register to simplify the code

Use dmaenginem_async_device_register to simplify the code:
remove dma_async_device_unregister.
remove label unregister_slave, unregister_memcpy

Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: mmp_tdma: use dmaenginem_async_device_register to simplify the code
Huang Shijie [Mon, 6 Aug 2018 08:52:26 +0000 (16:52 +0800)]
dmaengine: mmp_tdma: use dmaenginem_async_device_register to simplify the code

Use dmaenginem_async_device_register to simplify the code:
remove dma_async_device_unregister.
return error if it fails.

Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: stm32-mdma: use dmaenginem_async_device_register to simplify the code
Huang Shijie [Mon, 6 Aug 2018 08:52:24 +0000 (16:52 +0800)]
dmaengine: stm32-mdma: use dmaenginem_async_device_register to simplify the code

Use dmaenginem_async_device_register to simplify the code:
remove dma_async_device_unregister.

Acked-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: dw-axi-dmac: use dmaenginem_async_device_register to simplify the code
Huang Shijie [Mon, 6 Aug 2018 08:52:23 +0000 (16:52 +0800)]
dmaengine: dw-axi-dmac: use dmaenginem_async_device_register to simplify the code

Use dmaenginem_async_device_register to simplify the code:
remove dma_async_device_unregister.

Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: st_fdma: use dmaenginem_async_device_register to simplify the code
Huang Shijie [Mon, 6 Aug 2018 09:43:28 +0000 (17:43 +0800)]
dmaengine: st_fdma: use dmaenginem_async_device_register to simplify the code

Use dmaenginem_async_device_register to simplify the code:
remove dma_async_device_unregister.
remove label err_dma_dev

Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agodmaengine: Convert to using %pOFn instead of device_node.name
Rob Herring [Tue, 28 Aug 2018 01:52:17 +0000 (20:52 -0500)]
dmaengine: Convert to using %pOFn instead of device_node.name

In preparation to remove the node name pointer from struct device_node,
convert printf users to use the %pOFn format specifier.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
6 years agoLinux 4.19-rc1
Linus Torvalds [Sun, 26 Aug 2018 21:11:59 +0000 (14:11 -0700)]
Linux 4.19-rc1

6 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Aug 2018 20:39:05 +0000 (13:39 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull timer update from Thomas Gleixner:
 "New defines for the compat time* types so they can be shared between
  32bit and 64bit builds. Not used yet, but merging them now allows the
  actual conversions to be merged through different maintainer trees
  without dependencies

  We still have compat interfaces for 32bit on 64bit even with the new
  2038 safe timespec/val variants because pointer size is different. And
  for the old style timespec/val interfaces we need yet another 'compat'
  interface for both 32bit native and 32bit on 64bit"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  y2038: Provide aliases for compat helpers

6 years agoMerge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax
Linus Torvalds [Sun, 26 Aug 2018 18:48:42 +0000 (11:48 -0700)]
Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax

Pull IDA updates from Matthew Wilcox:
 "A better IDA API:

      id = ida_alloc(ida, GFP_xxx);
      ida_free(ida, id);

  rather than the cumbersome ida_simple_get(), ida_simple_remove().

  The new IDA API is similar to ida_simple_get() but better named.  The
  internal restructuring of the IDA code removes the bitmap
  preallocation nonsense.

  I hope the net -200 lines of code is convincing"

* 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax: (29 commits)
  ida: Change ida_get_new_above to return the id
  ida: Remove old API
  test_ida: check_ida_destroy and check_ida_alloc
  test_ida: Convert check_ida_conv to new API
  test_ida: Move ida_check_max
  test_ida: Move ida_check_leaf
  idr-test: Convert ida_check_nomem to new API
  ida: Start new test_ida module
  target/iscsi: Allocate session IDs from an IDA
  iscsi target: fix session creation failure handling
  drm/vmwgfx: Convert to new IDA API
  dmaengine: Convert to new IDA API
  ppc: Convert vas ID allocation to new IDA API
  media: Convert entity ID allocation to new IDA API
  ppc: Convert mmu context allocation to new IDA API
  Convert net_namespace to new IDA API
  cb710: Convert to new IDA API
  rsxx: Convert to new IDA API
  osd: Convert to new IDA API
  sd: Convert to new IDA API
  ...

6 years agoMerge tag 'gcc-plugins-v4.19-rc1-fix' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Aug 2018 18:41:08 +0000 (11:41 -0700)]
Merge tag 'gcc-plugins-v4.19-rc1-fix' of git://git./linux/kernel/git/kees/linux

Pull gcc plugin fix from Kees Cook:
 "Lift gcc test into Kconfig. This is for better behavior when the
  kernel is built with Clang, reported by Stefan Agner"

* tag 'gcc-plugins-v4.19-rc1-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  gcc-plugins: Disable when building under Clang

6 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Aug 2018 18:25:21 +0000 (11:25 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf updates from Thomas Gleixner:
 "Kernel:
   - Improve kallsyms coverage
   - Add x86 entry trampolines to kcore
   - Fix ARM SPE handling
   - Correct PPC event post processing

  Tools:
   - Make the build system more robust
   - Small fixes and enhancements all over the place
   - Update kernel ABI header copies
   - Preparatory work for converting libtraceevnt to a shared library
   - License cleanups"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (100 commits)
  tools arch: Update arch/x86/lib/memcpy_64.S copy used in 'perf bench mem memcpy'
  tools arch x86: Update tools's copy of cpufeatures.h
  perf python: Fix pyrf_evlist__read_on_cpu() interface
  perf mmap: Store real cpu number in 'struct perf_mmap'
  perf tools: Remove ext from struct kmod_path
  perf tools: Add gzip_is_compressed function
  perf tools: Add lzma_is_compressed function
  perf tools: Add is_compressed callback to compressions array
  perf tools: Move the temp file processing into decompress_kmodule
  perf tools: Use compression id in decompress_kmodule()
  perf tools: Store compression id into struct dso
  perf tools: Add compression id into 'struct kmod_path'
  perf tools: Make is_supported_compression() static
  perf tools: Make decompress_to_file() function static
  perf tools: Get rid of dso__needs_decompress() call in __open_dso()
  perf tools: Get rid of dso__needs_decompress() call in symbol__disassemble()
  perf tools: Get rid of dso__needs_decompress() call in read_object_code()
  tools lib traceevent: Change to SPDX License format
  perf llvm: Allow passing options to llc in addition to clang
  perf parser: Improve error message for PMU address filters
  ...

6 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Aug 2018 17:13:21 +0000 (10:13 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Thomas Gleixner:

 - Correct the L1TF fallout on 32bit and the off by one in the 'too much
   RAM for protection' calculation.

 - Add a helpful kernel message for the 'too much RAM' case

 - Unbreak the VDSO in case that the compiler desides to use indirect
   jumps/calls and emits retpolines which cannot be resolved because the
   kernel uses its own thunks, which does not work for the VDSO. Make it
   use the builtin thunks.

 - Re-export start_thread() which was unexported when the 32/64bit
   implementation was unified. start_thread() is required by modular
   binfmt handlers.

 - Trivial cleanups

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/speculation/l1tf: Suggest what to do on systems with too much RAM
  x86/speculation/l1tf: Fix off-by-one error when warning that system has too much RAM
  x86/kvm/vmx: Remove duplicate l1d flush definitions
  x86/speculation/l1tf: Fix overflow in l1tf_pfn_limit() on 32bit
  x86/process: Re-export start_thread()
  x86/mce: Add notifier_block forward declaration
  x86/vdso: Fix vDSO build if a retpoline is emitted

6 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Aug 2018 16:55:28 +0000 (09:55 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq update from Thomas Gleixner:
 "A small set of updats/fixes for the irq subsystem:

   - Allow GICv3 interrupts to be configured as wake-up sources to
     enable wakeup from suspend

   - Make the error handling of the STM32 irqchip init function work

   - A set of small cleanups and improvements"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/gic-v3: Allow interrupt to be configured as wake-up sources
  irqchip/tango: Set irq handler and data in one go
  dt-bindings: irqchip: renesas-irqc: Document r8a774a1 support
  irqchip/s3c24xx: Remove unneeded comparison of unsigned long to 0
  irqchip/stm32: Fix init error handling
  irqchip/bcm7038-l1: Hide cpu offline callback when building for !SMP

6 years agoMerge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Aug 2018 16:47:00 +0000 (09:47 -0700)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull licking update from Thomas Gleixner:
 "Mark the switch cases which fall through to the next case with the
  proper comment so the fallthrough compiler checks can be enabled"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  futex: Mark expected switch fall-throughs

6 years agoMerge tag 'libnvdimm-for-4.19_dax-memory-failure' of gitolite.kernel.org:pub/scm...
Linus Torvalds [Sun, 26 Aug 2018 01:43:59 +0000 (18:43 -0700)]
Merge tag 'libnvdimm-for-4.19_dax-memory-failure' of gitolite.pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm memory-failure update from Dave Jiang:
 "As it stands, memory_failure() gets thoroughly confused by dev_pagemap
  backed mappings. The recovery code has specific enabling for several
  possible page states and needs new enabling to handle poison in dax
  mappings.

  In order to support reliable reverse mapping of user space addresses:

   1/ Add new locking in the memory_failure() rmap path to prevent races
      that would typically be handled by the page lock.

   2/ Since dev_pagemap pages are hidden from the page allocator and the
      "compound page" accounting machinery, add a mechanism to determine
      the size of the mapping that encompasses a given poisoned pfn.

   3/ Given pmem errors can be repaired, change the speculatively
      accessed poison protection, mce_unmap_kpfn(), to be reversible and
      otherwise allow ongoing access from the kernel.

  A side effect of this enabling is that MADV_HWPOISON becomes usable
  for dax mappings, however the primary motivation is to allow the
  system to survive userspace consumption of hardware-poison via dax.
  Specifically the current behavior is:

     mce: Uncorrected hardware memory error in user-access at af34214200
     {1}[Hardware Error]: It has been corrected by h/w and requires no further action
     mce: [Hardware Error]: Machine check events logged
     {1}[Hardware Error]: event severity: corrected
     Memory failure: 0xaf34214: reserved kernel page still referenced by 1 users
     [..]
     Memory failure: 0xaf34214: recovery action for reserved kernel page: Failed
     mce: Memory error not recovered
     <reboot>

  ...and with these changes:

     Injecting memory failure for pfn 0x20cb00 at process virtual address 0x7f763dd00000
     Memory failure: 0x20cb00: Killing dax-pmd:5421 due to hardware memory corruption
     Memory failure: 0x20cb00: recovery action for dax page: Recovered

  Given all the cross dependencies I propose taking this through
  nvdimm.git with acks from Naoya, x86/core, x86/RAS, and of course dax
  folks"

* tag 'libnvdimm-for-4.19_dax-memory-failure' of gitolite.kernel.org:pub/scm/linux/kernel/git/nvdimm/nvdimm:
  libnvdimm, pmem: Restore page attributes when clearing errors
  x86/memory_failure: Introduce {set, clear}_mce_nospec()
  x86/mm/pat: Prepare {reserve, free}_memtype() for "decoy" addresses
  mm, memory_failure: Teach memory_failure() about dev_pagemap pages
  filesystem-dax: Introduce dax_lock_mapping_entry()
  mm, memory_failure: Collect mapping size in collect_procs()
  mm, madvise_inject_error: Let memory_failure() optionally take a page reference
  mm, dev_pagemap: Do not clear ->mapping on final put
  mm, madvise_inject_error: Disable MADV_SOFT_OFFLINE for ZONE_DEVICE pages
  filesystem-dax: Set page->index
  device-dax: Set page->index
  device-dax: Enable page_mapping()
  device-dax: Convert to vmf_insert_mixed and vm_fault_t

6 years agoMerge tag 'libnvdimm-for-4.19_misc' of gitolite.kernel.org:pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 26 Aug 2018 01:13:10 +0000 (18:13 -0700)]
Merge tag 'libnvdimm-for-4.19_misc' of gitolite.pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dave Jiang:
 "Collection of misc libnvdimm patches for 4.19 submission:

   - Adding support to read locked nvdimm capacity.

   - Change test code to make DSM failure code injection an override.

   - Add support for calculate maximum contiguous area for namespace.

   - Add support for queueing a short ARS when there is on going ARS for
     nvdimm.

   - Allow NULL to be passed in to ->direct_access() for kaddr and pfn
     params.

   - Improve smart injection support for nvdimm emulation testing.

   - Fix test code that supports for emulating controller temperature.

   - Fix hang on error before devm_memremap_pages()

   - Fix a bug that causes user memory corruption when data returned to
     user for ars_status.

   - Maintainer updates for Ross Zwisler emails and adding Jan Kara to
     fsdax"

* tag 'libnvdimm-for-4.19_misc' of gitolite.kernel.org:pub/scm/linux/kernel/git/nvdimm/nvdimm:
  libnvdimm: fix ars_status output length calculation
  device-dax: avoid hang on error before devm_memremap_pages()
  tools/testing/nvdimm: improve emulation of smart injection
  filesystem-dax: Do not request kaddr and pfn when not required
  md/dm-writecache: Don't request pointer dummy_addr when not required
  dax/super: Do not request a pointer kaddr when not required
  tools/testing/nvdimm: kaddr and pfn can be NULL to ->direct_access()
  s390, dcssblk: kaddr and pfn can be NULL to ->direct_access()
  libnvdimm, pmem: kaddr and pfn can be NULL to ->direct_access()
  acpi/nfit: queue issuing of ars when an uc error notification comes in
  libnvdimm: Export max available extent
  libnvdimm: Use max contiguous area for namespace size
  MAINTAINERS: Add Jan Kara for filesystem DAX
  MAINTAINERS: update Ross Zwisler's email address
  tools/testing/nvdimm: Fix support for emulating controller temperature
  tools/testing/nvdimm: Make DSM failure code injection an override
  acpi, nfit: Prefer _DSM over _LSR for namespace label reads
  libnvdimm: Introduce locked DIMM capacity support

6 years agoMerge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Sat, 25 Aug 2018 21:12:36 +0000 (14:12 -0700)]
Merge tag 'armsoc-late' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC late updates from Olof Johansson:
 "A couple of late-merged changes that would be useful to get in this
  merge window:

   - Driver support for reset of audio complex on Meson platforms. The
     audio driver went in this merge window, and these changes have been
     in -next for a while (just not in our tree).

   - Power management fixes for IOMMU on Rockchip platforms, getting
     closer to kexec working on them, including Chromebooks.

   - Another pass updating "arm,psci" -> "psci" for some properties that
     have snuck in since last time it was done"

* tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  iommu/rockchip: Move irq request past pm_runtime_enable
  iommu/rockchip: Handle errors returned from PM framework
  arm64: rockchip: Force CONFIG_PM on Rockchip systems
  ARM: rockchip: Force CONFIG_PM on Rockchip systems
  arm64: dts: Fix various entry-method properties to reflect documentation
  reset: imx7: Fix always writing bits as 0
  reset: meson: add meson audio arb driver
  reset: meson: add dt-bindings for meson-axg audio arb

6 years agoMerge tag 'kbuild-v4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy...
Linus Torvalds [Sat, 25 Aug 2018 20:40:38 +0000 (13:40 -0700)]
Merge tag 'kbuild-v4.19-2' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull more Kbuild updates from Masahiro Yamada:

 - add build_{menu,n,g,x}config targets for compile-testing Kconfig

 - fix and improve recursive dependency detection in Kconfig

 - fix parallel building of menuconfig/nconfig

 - fix syntax error in clang-version.sh

 - suppress distracting log from syncconfig

 - remove obsolete "rpm" target

 - remove VMLINUX_SYMBOL(_STR) macro entirely

 - fix microblaze build with CONFIG_DYNAMIC_FTRACE

 - move compiler test for dead code/data elimination to Kconfig

 - rename well-known LDFLAGS variable to KBUILD_LDFLAGS

 - misc fixes and cleanups

* tag 'kbuild-v4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: rename LDFLAGS to KBUILD_LDFLAGS
  kbuild: pass LDFLAGS to recordmcount.pl
  kbuild: test dead code/data elimination support in Kconfig
  initramfs: move gen_initramfs_list.sh from scripts/ to usr/
  vmlinux.lds.h: remove stale <linux/export.h> include
  export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR()
  Coccinelle: remove pci_alloc_consistent semantic to detect in zalloc-simple.cocci
  kbuild: make sorting initramfs contents independent of locale
  kbuild: remove "rpm" target, which is alias of "rpm-pkg"
  kbuild: Fix LOADLIBES rename in Documentation/kbuild/makefiles.txt
  kconfig: suppress "configuration written to .config" for syncconfig
  kconfig: fix "Can't open ..." in parallel build
  kbuild: Add a space after `!` to prevent parsing as file pattern
  scripts: modpost: check memory allocation results
  kconfig: improve the recursive dependency report
  kconfig: report recursive dependency involving 'imply'
  kconfig: error out when seeing recursive dependency
  kconfig: add build-only configurator targets
  scripts/dtc: consolidate include path options in Makefile

6 years agoMerge tag 'for-linus-20180825' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 25 Aug 2018 20:30:23 +0000 (13:30 -0700)]
Merge tag 'for-linus-20180825' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A few small fixes for this merge window:

   - Locking imbalance fix for bcache (Shan Hai)

   - A few small fixes for wbt. One is a cleanup/prep, one is a fix for
     an existing issue, and the last two are fixes for changes that went
     into this merge window (me)"

* tag 'for-linus-20180825' of git://git.kernel.dk/linux-block:
  blk-wbt: don't maintain inflight counts if disabled
  blk-wbt: fix has-sleeper queueing check
  blk-wbt: use wq_has_sleeper() for wq active check
  blk-wbt: move disable check into get_limit()
  bcache: release dc->writeback_lock properly in bch_writeback_thread()

6 years agoMerge tag 'upstream-4.19-rc1-fix' of git://git.infradead.org/linux-ubifs
Linus Torvalds [Sat, 25 Aug 2018 20:27:35 +0000 (13:27 -0700)]
Merge tag 'upstream-4.19-rc1-fix' of git://git.infradead.org/linux-ubifs

Pull UBIFS fix from Richard Weinberger:
 "Remove an empty file from UBIFS source"

* tag 'upstream-4.19-rc1-fix' of git://git.infradead.org/linux-ubifs:
  ubifs: Remove empty file.h

6 years agoMerge tag '4.19-rc-smb3' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sat, 25 Aug 2018 20:17:53 +0000 (13:17 -0700)]
Merge tag '4.19-rc-smb3' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Three small SMB3 fixes, one for stable"

* tag '4.19-rc-smb3' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: update internal module version number for cifs.ko to 2.12
  cifs: check kmalloc before use
  cifs: check if SMB2 PDU size has been padded and suppress the warning
  cifs: create a define for how many iovs we need for an SMB2_open()

6 years agomm/cow: don't bother write protecting already write-protected pages
Linus Torvalds [Mon, 9 Jul 2018 20:19:49 +0000 (13:19 -0700)]
mm/cow: don't bother write protecting already write-protected pages

This is not normally noticeable, but repeated forks are unnecessarily
expensive because they repeatedly dirty the parent page tables during
the page table copy operation.

It's trivial to just avoid write protecting the page table entry if it
was already not writable.

This patch was inspired by

    https://bugzilla.kernel.org/show_bug.cgi?id=200447

which points to an ancient "waste time re-doing fork" issue in the
presence of lots of signals.

That bug was fixed by Eric Biederman's signal handling series
culminating in commit c3ad2c3b02e9 ("signal: Don't restart fork when
signals come in"), but the unnecessary work for repeated forks is still
work just fixing, particularly since the fix is trivial.

Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agohpfs: remove unnecessary checks on the value of r when assigning error code
Colin Ian King [Sat, 25 Aug 2018 10:24:31 +0000 (12:24 +0200)]
hpfs: remove unnecessary checks on the value of r when assigning error code

At the point where r is being checked for different values, r is always
going to be equal to 2 as the previous if statements jump to end or end1
if r is not 2.  Hence the assignment to err can be simplified to just
err an assignment without any checks on the value or r.

Detected by CoverityScan, CID#1226737 ("Logically dead code")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agolibata: maintainership update
Jens Axboe [Sat, 25 Aug 2018 16:10:33 +0000 (10:10 -0600)]
libata: maintainership update

Tejun Heo wrote:
>
> I asked Jens whether he could take care of the libata tree and he
> thankfully agreed, so, from now on, Jens will be the libata
> maintainer.
>
> Thanks a lot!

Thanks for your work in this area. I still remember the first linux
storage summit we did in Vancouver 2001, Tejun was invited to talk about
his libata error handling work. Before that, it was basically a crap
shoot if we recovered properly or not... A lot of water has flown under
the bridge since then!

Here's an "official" patch. Linus, can you apply it?

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoMerge branch 'for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Linus Torvalds [Fri, 24 Aug 2018 20:20:33 +0000 (13:20 -0700)]
Merge branch 'for-4.19' of git://git./linux/kernel/git/tj/libata

Pull libata updates from Tejun Heo:
 "Nothing too interesting. Mostly ahci and ahci_platform changes, many
  around power management"

* 'for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (22 commits)
  ata: ahci_platform: enable to get and control reset
  ata: libahci_platform: add reset control support
  ata: add an extra argument to ahci_platform_get_resources()
  ata: sata_rcar: Add r8a77965 support
  ata: sata_rcar: exclude setting of PHY registers in Gen3
  ata: sata_rcar: really mask all interrupts on Gen2 and later
  Revert "ata: ahci_platform: allow disabling of hotplug to save power"
  ata: libahci: Allow reconfigure of DEVSLP register
  ata: libahci: Correct setting of DEVSLP register
  ata: ahci: Enable DEVSLP by default on x86 with SLP_S0
  ata: ahci: Support state with min power but Partial low power state
  Revert "ata: ahci_platform: convert kcalloc to devm_kcalloc"
  ata: sata_rcar: Add rudimentary Runtime PM support
  ata: sata_rcar: Provide a short-hand for &pdev->dev
  ata: Only output sg element mapped number in verbose debug
  ata: Guard ata_scsi_dump_cdb() by ATA_VERBOSE_DEBUG
  ata: ahci_platform: convert kcalloc to devm_kcalloc
  ata: ahci_platform: convert kzallloc to kcalloc
  ata: ahci_platform: correct parameter documentation for ahci_platform_shutdown
  libata: remove ata_sff_data_xfer_noirq()
  ...

6 years agoMerge branch 'for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Linus Torvalds [Fri, 24 Aug 2018 20:19:27 +0000 (13:19 -0700)]
Merge branch 'for-4.19' of git://git./linux/kernel/git/tj/cgroup

Pull cgroup updates from Tejun Heo:
 "Just one commit from Steven to take out spin lock from trace event
  handlers"

* 'for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup/tracing: Move taking of spin lock out of trace event handlers

6 years agoMerge branch 'for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Linus Torvalds [Fri, 24 Aug 2018 20:16:36 +0000 (13:16 -0700)]
Merge branch 'for-4.19' of git://git./linux/kernel/git/tj/wq

Pull workqueue updates from Tejun Heo:
 "Over the lockdep cross-release churn, workqueue lost some of the
  existing annotations. Johannes Berg restored it and also improved
  them"

* 'for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: re-add lockdep dependencies for flushing
  workqueue: skip lockdep wq dependency in cancel_work_sync()

6 years agoMerge tag 'iommu-updates-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 24 Aug 2018 20:10:38 +0000 (13:10 -0700)]
Merge tag 'iommu-updates-v4.19' of git://git./linux/kernel/git/joro/iommu

Pull IOMMU updates from Joerg Roedel:

 - PASID table handling updates for the Intel VT-d driver. It implements
   a global PASID space now so that applications usings multiple devices
   will just have one PASID.

 - A new config option to make iommu passthroug mode the default.

 - New sysfs attribute for iommu groups to export the type of the
   default domain.

 - A debugfs interface (for debug only) usable by IOMMU drivers to
   export internals to user-space.

 - R-Car Gen3 SoCs support for the ipmmu-vmsa driver

 - The ARM-SMMU now aborts transactions from unknown devices and devices
   not attached to any domain.

 - Various cleanups and smaller fixes all over the place.

* tag 'iommu-updates-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (42 commits)
  iommu/omap: Fix cache flushes on L2 table entries
  iommu: Remove the ->map_sg indirection
  iommu/arm-smmu-v3: Abort all transactions if SMMU is enabled in kdump kernel
  iommu/arm-smmu-v3: Prevent any devices access to memory without registration
  iommu/ipmmu-vmsa: Don't register as BUS IOMMU if machine doesn't have IPMMU-VMSA
  iommu/ipmmu-vmsa: Clarify supported platforms
  iommu/ipmmu-vmsa: Fix allocation in atomic context
  iommu: Add config option to set passthrough as default
  iommu: Add sysfs attribyte for domain type
  iommu/arm-smmu-v3: sync the OVACKFLG to PRIQ consumer register
  iommu/arm-smmu: Error out only if not enough context interrupts
  iommu/io-pgtable-arm-v7s: Abort allocation when table address overflows the PTE
  iommu/io-pgtable-arm: Fix pgtable allocation in selftest
  iommu/vt-d: Remove the obsolete per iommu pasid tables
  iommu/vt-d: Apply per pci device pasid table in SVA
  iommu/vt-d: Allocate and free pasid table
  iommu/vt-d: Per PCI device pasid table interfaces
  iommu/vt-d: Add for_each_device_domain() helper
  iommu/vt-d: Move device_domain_info to header
  iommu/vt-d: Apply global PASID in SVA
  ...

6 years agoMerge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Linus Torvalds [Fri, 24 Aug 2018 20:03:51 +0000 (13:03 -0700)]
Merge branch 'next' of git://git./linux/kernel/git/rzhang/linux

Pull thermal management updates from Zhang Rui:

 - Add Daniel Lezcano as the reviewer of thermal framework and SoC
   driver changes (Daniel Lezcano).

 - Fix a bug in intel_dts_soc_thermal driver, which does not translate
   IO-APIC GSI (Global System Interrupt) into Linux irq number (Hans de
   Goede).

 - For device tree bindings, allow cooling devices sharing same trip
   point with same contribution value to share cooling map (Viresh
   Kumar).

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
  dt-bindings: thermal: Allow multiple devices to share cooling map
  MAINTAINERS: Add Daniel Lezcano as designated reviewer for thermal
  Thermal: Intel SoC DTS: Translate IO-APIC GSI number to linux irq number

6 years agoMerge tag 'apparmor-pr-2018-08-23' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 24 Aug 2018 20:00:33 +0000 (13:00 -0700)]
Merge tag 'apparmor-pr-2018-08-23' of git://git./linux/kernel/git/jj/linux-apparmor

Pull apparmor updates from John Johansen:
 "There is nothing major this time just four bug fixes and a patch to
  remove some dead code:

  Cleanups:
   - remove no-op permission check in policy_unpack

  Bug fixes:
   - fix an error code in __aa_create_ns()
   - fix failure to audit context info in build_change_hat
   - check buffer bounds when mapping permissions mask
   - fully initialize aa_perms struct when answering userspace query"

* tag 'apparmor-pr-2018-08-23' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor:
  apparmor: remove no-op permission check in policy_unpack
  apparmor: fix an error code in __aa_create_ns()
  apparmor: Fix failure to audit context info in build_change_hat
  apparmor: Fully initialize aa_perms struct when answering userspace query
  apparmor: Check buffer bounds when mapping permissions mask

6 years agoMerge tag 'powerpc-4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Fri, 24 Aug 2018 16:34:23 +0000 (09:34 -0700)]
Merge tag 'powerpc-4.19-2' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - An implementation for the newly added hv_ops->flush() for the OPAL
   hvc console driver backends, I forgot to apply this after merging the
   hvc driver changes before the merge window.

 - Enable all PCI bridges at boot on powernv, to avoid races when
   multiple children of a bridge try to enable it simultaneously. This
   is a workaround until the PCI core can be enhanced to fix the races.

 - A fix to query PowerVM for the correct system topology at boot before
   initialising sched domains, seen in some configurations to cause
   broken scheduling etc.

 - A fix for pte_access_permitted() on "nohash" platforms.

 - Two commits to fix SIGBUS when using remap_pfn_range() seen on Power9
   due to a workaround when using the nest MMU (GPUs, accelerators).

 - Another fix to the VFIO code used by KVM, the previous fix had some
   bugs which caused guests to not start in some configurations.

 - A handful of other minor fixes.

Thanks to: Aneesh Kumar K.V, Benjamin Herrenschmidt, Christophe Leroy,
Hari Bathini, Luke Dashjr, Mahesh Salgaonkar, Nicholas Piggin, Paul
Mackerras, Srikar Dronamraju.

* tag 'powerpc-4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/mce: Fix SLB rebolting during MCE recovery path.
  KVM: PPC: Book3S: Fix guest DMA when guest partially backed by THP pages
  powerpc/mm/radix: Only need the Nest MMU workaround for R -> RW transition
  powerpc/mm/books3s: Add new pte bit to mark pte temporarily invalid.
  powerpc/nohash: fix pte_access_permitted()
  powerpc/topology: Get topology for shared processors at boot
  powerpc64/ftrace: Include ftrace.h needed for enable/disable calls
  powerpc/powernv/pci: Work around races in PCI bridge enabling
  powerpc/fadump: cleanup crash memory ranges support
  powerpc/powernv: provide a console flush operation for opal hvc driver
  powerpc/traps: Avoid rate limit messages from show unhandled signals
  powerpc/64s: Fix PACA_IRQ_HARD_DIS accounting in idle_power4()

6 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Linus Torvalds [Fri, 24 Aug 2018 16:31:34 +0000 (09:31 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux

Pull s390 updates from Martin Schwidefsky:

 - A couple of patches for the zcrypt driver:
     + Add two masks to determine which AP cards and queues are host
       devices, this will be useful for KVM AP device passthrough
     + Add-on patch to improve the parsing of the new apmask and aqmask
     + Some code beautification

 - Second try to reenable the GCC plugins, the first patch set had a
   patch to do this but the merge somehow missed this

 - Remove the s390 specific GCC version check and use the generic one

 - Three patches for kdump, two bug fixes and one cleanup

 - Three patches for the PCI layer, one bug fix and two cleanups

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390: remove gcc version check (4.3 or newer)
  s390/zcrypt: hex string mask improvements for apmask and aqmask.
  s390/zcrypt: AP bus support for alternate driver(s)
  s390/zcrypt: code beautify
  s390/zcrypt: switch return type to bool for ap_instructions_available()
  s390/kdump: Remove kzalloc_panic
  s390/kdump: Fix memleak in nt_vmcoreinfo
  s390/kdump: Make elfcorehdr size calculation ABI compliant
  s390/pci: remove fmb address from debug output
  s390/pci: remove stale rc
  s390/pci: fix out of bounds access during irq setup
  s390/zcrypt: fix ap_instructions_available() returncodes
  s390: reenable gcc plugins for real

6 years agoMerge tag 'acpi-4.19-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Fri, 24 Aug 2018 16:29:44 +0000 (09:29 -0700)]
Merge tag 'acpi-4.19-rc1-3' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI Kconfig fix from Rafael Wysocki:
 "Fix recent menuconfig breakage causing it to present ACPI-specific
  options incorrectly (Arnd Bergmann)"

* tag 'acpi-4.19-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: fix menuconfig presentation of ACPI submenu

6 years agoMerge branch 'userns-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm...
Linus Torvalds [Fri, 24 Aug 2018 16:25:39 +0000 (09:25 -0700)]
Merge branch 'userns-linus' of git://git./linux/kernel/git/ebiederm/user-namespace

Pull namespace fixes from Eric Biederman:
 "This is a set of four fairly obvious bug fixes:

   - a switch from d_find_alias to d_find_any_alias because the xattr
     code perversely takes a dentry

   - two mutex vs copy_to_user fixes from Jann Horn

   - a fix to use a sanitized size not the size userspace passed in from
     Christian Brauner"

* 'userns-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  getxattr: use correct xattr length
  sys: don't hold uts_sem while accessing userspace memory
  userns: move user access out of the mutex
  cap_inode_getsecurity: use d_find_any_alias() instead of d_find_alias()

6 years agoMerge tag 'drm-next-2018-08-24' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 24 Aug 2018 16:22:54 +0000 (09:22 -0700)]
Merge tag 'drm-next-2018-08-24' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Just a couple of fixes"

  One MAINTAINERS address change, two panels fixes, and set of amdgpu
  fixes (build fixes, display fixes and some others)"

* tag 'drm-next-2018-08-24' of git://anongit.freedesktop.org/drm/drm:
  drm/edid: Add 6 bpc quirk for SDC panel in Lenovo B50-80
  drm/amd/display: Don't build DCN1 when kcov is enabled
  Revert "drm/amdgpu/display: Replace CONFIG_DRM_AMD_DC_DCN1_0 with CONFIG_X86"
  drm/amdgpu/display: disable eDP fast boot optimization on DCE8
  drm/amdgpu: fix amdgpu_amdkfd_remove_eviction_fence v3
  drm/amdgpu: fix incorrect use of drm_file->pid
  drm/amdgpu: fix incorrect use of fcheck
  drm/powerplay: enable dpm under pass-through
  drm/amdgpu: access register without KIQ
  drm/amdgpu: set correct base for THM/NBIF/MP1 IP
  drm/amd/display: fix dentist did ranges
  drm/amd/display: make dp_ss_off optional
  drm/amd/display: fix dp_ss_control vbios flag parsing
  drm/amd/display: Do not retain link settings
  MAINTAINERS: drm-misc: Change seanpaul's email address
  drm/panel: simple: tv123wam: Add unprepare delay

6 years agoMerge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Fri, 24 Aug 2018 15:57:26 +0000 (08:57 -0700)]
Merge branch 'i2c/for-next' of git://git./linux/kernel/git/wsa/linux

Pull second i2c update from Wolfram Sang:
 "As promised, here is my 2nd pull request for I2C, containing:

   - removal of the attach_adapter callback, converting its last user

   - removal of any __deprecated usage within I2C

   - one email address update

   - some SPDX conversion"

* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: don't use any __deprecated handling anymore
  i2c: use SPDX identifier for Renesas drivers
  i2c: ocores: update my email address
  i2c: remove deprecated attach_adapter callback
  macintosh: therm_windtunnel: drop using attach_adapter