Takashi Sakamoto [Thu, 8 Jun 2017 21:37:05 +0000 (06:37 +0900)]
ALSA: pcm: use helper functions to check whether parameters are determined
A commit
8bea869c5e56 ("ALSA: PCM midlevel: improve fifo_size handling")
allows drivers to implement calculation of fifo size in parameter
structure. This calculation runs only when two of the other parameters
have single value.
In ALSA PCM core, there're some helper functions for the case. This commit
applies the functions instead of value comparison.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Sakamoto [Thu, 8 Jun 2017 21:37:04 +0000 (06:37 +0900)]
ALSA: pcm: adaption of code formatting
This commit modifies current for readability in below aspects:
- use bool type variable instead of int type variable assigned to 0/1
- move variable definition from loop to top of the function definition
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Sakamoto [Thu, 8 Jun 2017 21:37:03 +0000 (06:37 +0900)]
ALSA: pcm: remove function local variable with alternative evaluation
A local variable is used to judge whether a parameter should be handled
due to reverse dependency of the other rules. However, this can be
obsoleted by check of a sentinel in dependency array.
This commit removes the local variable and check the sentinel to reduce
stack usage.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Sakamoto [Thu, 8 Jun 2017 21:37:02 +0000 (06:37 +0900)]
ALSA: pcm: use goto statement instead of while statement to reduce indentation
In a process to calculate parameters of PCM substream, application of all
rules is iterated several times till parameter dependencies are satisfied.
In current implementation, two loops are used for the design, however this
brings two-level indentation and decline readability.
This commit attempts to reduce the indentation by using goto statement,
instead of outer while loop.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Sakamoto [Thu, 8 Jun 2017 21:37:01 +0000 (06:37 +0900)]
ALSA: pcm: add a helper function to apply parameter rules
Application of rules to parameters of PCM substream is done in a call of
snd_pcm_hw_refine(), while the function includes much codes and is not
enough friendly to readers.
This commit splits the codes to a separated function so that readers can
get it easily. I leave desicion into compilers to merge the function into
its callee.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Sakamoto [Thu, 8 Jun 2017 21:37:00 +0000 (06:37 +0900)]
ALSA: pcm: add a helper function to constrain interval-type parameters
Application of constraints to interval-type parameters for PCM substream
is done in a call of snd_pcm_hw_refine(), while the function includes
much codes and is not enough friendly to readers.
This commit splits the codes to a separated function so that readers can
get it easily. I leave desicion into compilers to merge the function into
its callee.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Sakamoto [Thu, 8 Jun 2017 21:36:59 +0000 (06:36 +0900)]
ALSA: pcm: add a helper function to constrain mask-type parameters
Application of constraints to mask-type parameters for PCM substream is
done in a call of snd_pcm_hw_refine(), while the function includes much
codes and is not enough friendly to readers.
This commit splits the codes to a separated function so that readers can
get it easily. I leave desicion into compilers to merge the function into
its callee.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Sakamoto [Thu, 8 Jun 2017 00:11:03 +0000 (09:11 +0900)]
ALSA: firewire: arrange common PCM info/constraints for AMDTP engine applications
In ALSA firewire stack, 8 drivers uses IEC 61883-1/6 engine for data
transmission. They have common PCM info/constraints and duplicated codes.
This commit unifies the codes into fireiwre-lib.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Sakamoto [Tue, 6 Jun 2017 23:46:45 +0000 (08:46 +0900)]
ALSA: pcm: obsolete RULES_DEBUG local macro
Added tracepoints obsoleted RULES_DEBUG local macro and relevant codes.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Sakamoto [Tue, 6 Jun 2017 23:46:44 +0000 (08:46 +0900)]
ALSA: pcm: enable parameter tracepoints only when CONFIG_SND_DEBUG is enabled
In a previous commit, tracepoints are added for PCM parameter processing.
As long as I know, this implementation increases size of relocatable
object by 35%. For vendors who are conscious of memory footprint, it
brings apparent disadvantage.
This commit utilizes CONFIG_SND_DEBUG configuration to enable/disable the
tracepoints.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Sakamoto [Tue, 6 Jun 2017 23:46:43 +0000 (08:46 +0900)]
ALSA: pcm: tracepoints for refining PCM parameters
When working for devices which support configurable modes for its data
transmission or which consists of several components, developers are
likely to use rules of parameters of PCM substream. However, there's no
infrastructure to assist their work.
In old days, ALSA PCM core got a local 'RULES_DEBUG' macro to debug
refinement of parameters for PCM substream. Although this is merely a
makeshift. With some modifications, we get the infrastructure.
This commit is for the purpose. Refinement of mask/interval type of
PCM parameters is probed as tracepoint events as 'hw_mask_param' and
'hw_interval_param' on existent 'snd_pcm' subsystem.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Fri, 2 Jun 2017 15:35:30 +0000 (17:35 +0200)]
ALSA: timer: Wrap with spinlock for queue access
For accessing the snd_timer_user queue indices, we take tu->qlock.
But it's forgotten in a couple of places.
The one in snd_timer_user_params() should be safe without the
spinlock as the timer is already stopped. But it's better for
consistency.
The one in poll is just a read-out, so it's not inevitably needed, but
it'd be good to make the result consistent, too.
Tested-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Fri, 2 Jun 2017 15:16:59 +0000 (17:16 +0200)]
ALSA: timer: Improve user queue reallocation
ALSA timer may reallocate the user queue upon request, and it happens
at three places for now: at opening, at SNDRV_TIMER_IOCTL_PARAMS, and
at SNDRV_TIMER_IOCTL_SELECT. However, the last one,
snd_timer_user_tselect(), doesn't need to reallocate the buffer since
it doesn't change the queue size. It does just because tu->tread
might have been changed before starting the timer.
Instead of *_SELECT ioctl, we should reallocate the queue at
SNDRV_TIMER_IOCTL_TREAD; then the timer is guaranteed to be stopped,
thus we can reassign the buffer more safely.
This patch implements that with a slight code refactoring.
Essentially, the patch achieves:
- Introduce realloc_user_queue() for (re-)allocating the ring buffer,
and call it from all places. Also, realloc_user_queue() uses
kcalloc() for avoiding possible leaks.
- Add the buffer reallocation at SNDRV_TIMER_IOCTL_TREAD. When it
fails, tu->tread is restored to the old value, too.
- Drop the buffer reallocation at snd_timer_user_tselect().
Tested-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 7 Jun 2017 08:25:30 +0000 (10:25 +0200)]
Merge branch 'for-linus' into for-next
For applying more ALSA timer cleanups.
Takashi Iwai [Fri, 2 Jun 2017 15:26:56 +0000 (17:26 +0200)]
ALSA: timer: Fix missing queue indices reset at SNDRV_TIMER_IOCTL_SELECT
snd_timer_user_tselect() reallocates the queue buffer dynamically, but
it forgot to reset its indices. Since the read may happen
concurrently with ioctl and snd_timer_user_tselect() allocates the
buffer via kmalloc(), this may lead to the leak of uninitialized
kernel-space data, as spotted via KMSAN:
BUG: KMSAN: use of unitialized memory in snd_timer_user_read+0x6c4/0xa10
CPU: 0 PID: 1037 Comm: probe Not tainted 4.11.0-rc5+ #2739
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:16
dump_stack+0x143/0x1b0 lib/dump_stack.c:52
kmsan_report+0x12a/0x180 mm/kmsan/kmsan.c:1007
kmsan_check_memory+0xc2/0x140 mm/kmsan/kmsan.c:1086
copy_to_user ./arch/x86/include/asm/uaccess.h:725
snd_timer_user_read+0x6c4/0xa10 sound/core/timer.c:2004
do_loop_readv_writev fs/read_write.c:716
__do_readv_writev+0x94c/0x1380 fs/read_write.c:864
do_readv_writev fs/read_write.c:894
vfs_readv fs/read_write.c:908
do_readv+0x52a/0x5d0 fs/read_write.c:934
SYSC_readv+0xb6/0xd0 fs/read_write.c:1021
SyS_readv+0x87/0xb0 fs/read_write.c:1018
This patch adds the missing reset of queue indices. Together with the
previous fix for the ioctl/read race, we cover the whole problem.
Reported-by: Alexander Potapenko <glider@google.com>
Tested-by: Alexander Potapenko <glider@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Fri, 2 Jun 2017 13:03:38 +0000 (15:03 +0200)]
ALSA: timer: Fix race between read and ioctl
The read from ALSA timer device, the function snd_timer_user_tread(),
may access to an uninitialized struct snd_timer_user fields when the
read is concurrently performed while the ioctl like
snd_timer_user_tselect() is invoked. We have already fixed the races
among ioctls via a mutex, but we seem to have forgotten the race
between read vs ioctl.
This patch simply applies (more exactly extends the already applied
range of) tu->ioctl_lock in snd_timer_user_tread() for closing the
race window.
Reported-by: Alexander Potapenko <glider@google.com>
Tested-by: Alexander Potapenko <glider@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Sakamoto [Wed, 7 Jun 2017 00:38:06 +0000 (09:38 +0900)]
ALSA: fireface: constify ALSA specific operations
ALSA fireface driver has ALSA specific operations for MIDI/PCM data.
Structured data for the operations can be constified. Additionally,
The structured data can be function local.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Sakamoto [Wed, 7 Jun 2017 00:38:05 +0000 (09:38 +0900)]
ALSA: firewire: process packets in 'struct snd_pcm_ops.ack' callback
In recent commit for ALSA PCM core, some arrangement is done for
'struct snd_pcm_ops.ack' callback. This is called when appl_ptr is
explicitly moved in intermediate buffer for PCM frames, except for
some cases described later.
For drivers in ALSA firewire stack, usage of this callback has a merit to
reduce latency between time of PCM frame queueing and handling actual
packets in recent isochronous cycle, because no need to wait for software
IRQ context from isochronous context of OHCI 1394.
If this works well in a case that mapped page frame is used for the
intermediate buffer, user process should execute some commands for ioctl(2)
to tell the number of handled PCM frames in the intermediate buffer just
after handling them. Therefore, at present, with a combination of below
conditions, this doesn't work as expected and user process should wait for
the software IRQ context as usual:
- when ALSA PCM core judges page frame mapping is available for status
data (struct snd_pcm_mmap_status) and control data
(struct snd_pcm_mmap_control).
- user process handles PCM frames by loop just with 'snd_pcm_mmap_begin()'
and 'snd_pcm_mmap_commit()'.
- user process uses PCM hw plugin in alsa-lib to operate I/O without
'sync_ptr_ioctl' option.
Unfortunately, major use case include these three conditions.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Tue, 6 Jun 2017 18:03:46 +0000 (20:03 +0200)]
Merge tag 'asoc-fix-v4.12-rc4' of git://git./linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v4.12
This is the usual collection of device specific fixes, all accumilated
since the merge window, plus one fix from Takashi for a nasty use after
free bug that bit some things with deferred probe and an update to the
maintainer address for the former Wolfson parts.
Takashi Iwai [Tue, 6 Jun 2017 10:33:17 +0000 (12:33 +0200)]
ALSA: hda/realtek - Reorder ALC269 ASUS quirk entries
A disorder is found in some ALC269 quirk entries for ASUS (1043:xxxx),
which should have been sorted in PCI SSID order. Rearrange them, so
that I won't overlook the already existing entry like I did a couple
of times in the past...
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Chris Chiu [Mon, 5 Jun 2017 21:05:30 +0000 (15:05 -0600)]
ALSA: hda/realtek: Fix mic and headset jack sense on Asus X705UD
The ASUS X705UD laptop requires the known fixup ALC256_FIXUP_ASUS_MIC
in order to fix headphone jack sensing and to enable use of the internal
microphone.
Unfortunately jack sensing for the headset mic is still not working.
[rearranged the position to keep the PCI SSID order -- tiwai]
Signed-off-by: Chris Chiu <chiu@endlessm.com>
Signed-off-by: Daniel Drake <drake@endlessm.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Thu, 1 Jun 2017 20:36:02 +0000 (22:36 +0200)]
ALSA: doc: Update copy_user, copy_kernel and fill_silence PCM ops
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Sun, 21 May 2017 17:08:57 +0000 (19:08 +0200)]
ALSA: pcm: Build OSS writev/readv helpers conditionally
The snd_pcm_oss_writev3() and snd_pcm_oss_readv3() are used only in
io.c with CONFIG_SND_PCM_OSS_PLUGINS=y. Add an ifdef to reduce the
build of these functions.
Along with it, since they are called always for in-kernel copy, reduce
the argument and call snd_pcm_kernel_writev() and *_readv() directly
instead.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Sun, 21 May 2017 08:14:42 +0000 (10:14 +0200)]
ALSA: pcm: Kill set_fs() in PCM OSS layer
This is the last-standing one: kill the set_fs() usage in PCM OSS
layer by replacing with the new API functions to deal with the direct
in-kernel buffer copying.
The code to fill the silence can be replaced even to a one-liner to
pass NULL buffer instead of the manual copying.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Sun, 21 May 2017 08:19:16 +0000 (10:19 +0200)]
usb: gadget: u_uac1: Kill set_fs() usage
With the new API to perform the in-kernel buffer copy, we can get rid
of set_fs() usage in this driver, finally.
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 24 May 2017 16:23:20 +0000 (18:23 +0200)]
ALSA: pcm: Direct in-kernel read/write support
Now all materials are ready, let's allow the direct in-kernel
read/write, i.e. a kernel-space buffer is passed for read or write,
instead of the normal user-space buffer. This feature is used by OSS
layer and UAC1 driver, for example.
The __snd_pcm_lib_xfer() takes in_kernel argument that indicates the
in-kernel buffer copy. When this flag is set, another transfer code
is used. It's either via copy_kernel PCM ops or the normal memcpy(),
depending on the driver setup.
As external API, snd_pcm_kernel_read(), *_write() and other variants
are provided.
That's all. This support is really simple because of the code
refactoring until now.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 24 May 2017 16:18:15 +0000 (18:18 +0200)]
ALSA: pcm: Simplify snd_pcm_playback_silence()
Use the existing silence helper codes for simplification.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 24 May 2017 20:36:23 +0000 (22:36 +0200)]
ALSA: pcm: Unify read/write loop
Both __snd_pcm_lib_read() and __snd_pcm_write() functions have almost
the same code to loop over samples. For simplification, this patch
unifies both as the single helper, __snd_pcm_lib_xfer().
Other than that, there should be no functional change by this patch.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 24 May 2017 16:15:26 +0000 (18:15 +0200)]
ALSA: pcm: More unification of PCM transfer codes
This patch proceeds more abstraction of PCM read/write loop codes.
For both interleaved and non-interleaved transfers, the same copy or
silence transfer code (which is defined as pcm_transfer_f) is used
now. This became possible since we switched to byte size to copy_*
and fill_silence ops argument instead of frames.
And, for both read and write, we can use the same copy function (which
is defined as pcm_copy_f), just depending on whether interleaved or
non-interleaved mode.
The transfer function is determined at the beginning of the loop,
depending on whether the driver gives the specific copy ops or it's
the standard read/write.
Another bonus by this change is that we now guarantee the silencing
behavior when NULL buffer is passed to write helpers. It'll simplify
some codes later.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Sun, 21 May 2017 07:35:21 +0000 (09:35 +0200)]
ALSA: pcm: Call directly the common read/write helpers
Make snd_pcm_lib_read() and *_write() static inline functions that
call the common helper functions directly. This reduces a slight
amount of codes, and at the same time, it's a preparation for the
further cleanups / fixes.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 24 May 2017 15:59:17 +0000 (17:59 +0200)]
ALSA: pcm: Shuffle codes
Just shuffle the codes, without any change otherwise.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 24 May 2017 15:51:30 +0000 (17:51 +0200)]
ALSA: pcm: Check PCM state by a common helper function
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 10 May 2017 20:21:52 +0000 (22:21 +0200)]
ALSA: pcm: Drop the old copy and silence ops
Now that all users of old copy and silence ops have been converted to
the new PCM ops, the old stuff can be retired and go away.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 10 May 2017 20:20:10 +0000 (22:20 +0200)]
[media] solo6x10: Convert to the new PCM ops
Replace the copy and the silence ops with the new PCM ops.
The device supports only 1 channel and 8bit sample, so it's always
bytes=frames, and we need no conversion of unit in the callback.
Also, it's a capture stream, thus no silence is needed.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 10 May 2017 19:59:12 +0000 (21:59 +0200)]
ASoC: blackfin: Convert to the new PCM ops
Replace the copy and the silence ops with the new PCM ops.
In AC97 and I2S-TDM mode, we need to convert back to frames, but
otherwise the conversion is pretty straightforward.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 10 May 2017 19:57:16 +0000 (21:57 +0200)]
ALSA: sh: Convert to the new PCM ops
Replace the copy and the silence ops with the new PCM ops.
Fixed also the user-space buffer copy with the proper
copy_from_user*() variant.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 10 May 2017 18:34:45 +0000 (20:34 +0200)]
ALSA: sb: Convert to the new PCM ops
Replace the copy and the silence ops with the new PCM ops.
For avoiding the code redundancy, slightly hackish macros are
introduced.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 10 May 2017 18:33:05 +0000 (20:33 +0200)]
ALSA: gus: Convert to the new PCM ops
Replace the copy and the silence ops with the new PCM ops.
For simplifying the code a bit, two local helpers are introduced here:
get_bpos() and playback_copy_ack().
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 10 May 2017 18:32:25 +0000 (20:32 +0200)]
ALSA: hdsp: Convert to the new PCM ops
Replace the copy and the silence ops with the new PCM ops.
The conversion is straightforward with standard helper functions.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 10 May 2017 18:31:41 +0000 (20:31 +0200)]
ALSA: rme9652: Convert to the new PCM ops
Replace the copy and the silence ops with the new PCM ops.
The conversion is straightforward with standard helper functions.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 10 May 2017 18:30:34 +0000 (20:30 +0200)]
ALSA: rme96: Convert to the new PCM ops
Replace the copy and the silence ops with the new PCM ops.
The conversion is straightforward with standard helper functions, and
now we can drop the bytes <-> frames conversions in callbacks.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 10 May 2017 18:29:25 +0000 (20:29 +0200)]
ALSA: rme32: Convert to the new PCM copy ops
Replace the copy and the silence ops with the new ops.
The conversion is straightforward with standard helper functions, and
now we can drop the bytes <-> frames conversions in callbacks.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 10 May 2017 18:19:17 +0000 (20:19 +0200)]
ALSA: korg1212: Convert to the new PCM ops
Replace the copy and the silence ops with the new PCM ops.
Although we can refactor this messy code, at this time, the changes
are kept as small as possible. Let's clean up later.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 10 May 2017 18:25:17 +0000 (20:25 +0200)]
ALSA: nm256: Convert to new PCM copy ops
Replace the copy and the silence ops with the new ops.
The conversion is straightforward with standard helper functions, and
now we can drop the bytes <-> frames conversions in callbacks.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 10 May 2017 18:16:36 +0000 (20:16 +0200)]
ALSA: es1938: Convert to the new PCM copy ops
Replace the copy ops with the new copy_user and copy_kernel ops.
It's used only for a capture stream (for some hardware workaround),
thus we need no silence operation.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 10 May 2017 18:15:40 +0000 (20:15 +0200)]
ALSA: dummy: Convert to new PCM copy ops
It's a dummy ops, so just replacing it.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 10 May 2017 18:02:35 +0000 (20:02 +0200)]
ALSA: pcm: Introduce copy_user, copy_kernel and fill_silence ops
For supporting the explicit in-kernel copy of PCM buffer data, and
also for further code refactoring, three new PCM ops, copy_user,
copy_kernel and fill_silence, are introduced. The old copy and
silence ops will be deprecated and removed later once when all callers
are converted.
The copy_kernel ops is the new one, and it's supposed to transfer the
PCM data from the given kernel buffer to the hardware ring-buffer (or
vice-versa depending on the stream direction), while the copy_user ops
is equivalent with the former copy ops, to transfer the data from the
user-space buffer.
The major difference of the new copy_* and fill_silence ops from the
previous ops is that the new ops take bytes instead of frames for size
and position arguments. It has two merits: first, it allows the
callback implementation often simpler (just call directly memcpy() &
co), and second, it may unify the implementations of both interleaved
and non-interleaved cases, as we'll see in the later patch.
As of this stage, copy_kernel ops isn't referred yet, but only
copy_user is used.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Thu, 1 Jun 2017 07:35:30 +0000 (09:35 +0200)]
ALSA: hda - Fix applying MSI dual-codec mobo quirk
The previous commit [
63691587f7b0: ALSA: hda - Apply dual-codec quirk
for MSI Z270-Gaming mobo] attempted to apply the existing dual-codec
quirk for a MSI mobo. But it turned out that this isn't applied
properly due to the MSI-vendor quirk before this entry. I overlooked
such two MSI entries just because they were put in the wrong position,
although we have a list ordered by PCI SSID numbers.
This patch fixes it by rearranging the unordered entries.
Fixes: 63691587f7b0 ("ALSA: hda - Apply dual-codec quirk for MSI Z270-Gaming mobo")
Reported-by: Rudolf Schmidt <info@rudolfschmidt.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Tue, 30 May 2017 21:24:45 +0000 (23:24 +0200)]
ALSA: usb: Avoid VLA in mixer_us16x08.c
This is another attempt to work around the VLA used in
mixer_us16x08.c. Basically the temporary array is used individually
for two cases, and we can declare locally in each block, instead of
hackish max() usage.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Tue, 30 May 2017 21:21:07 +0000 (23:21 +0200)]
ALSA: usb: Fix a typo in Tascam US-16x08 mixer element
A mixer element created in a quirk for Tascam US-16x08 contains a
typo: it should be "EQ MidLow Q" instead of "EQ MidQLow Q".
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=195875
Fixes: d2bb390a2081 ("ALSA: usb-audio: Tascam US-16x08 DSP mixer quirk")
Cc: <stable@vger.kernel.org> # v4.11+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Tue, 30 May 2017 07:23:41 +0000 (09:23 +0200)]
Revert "ALSA: usb-audio: purge needless variable length array"
This reverts commit
89b593c30e83 ("ALSA: usb-audio: purge needless
variable length array"). The patch turned out to cause a severe
regression, triggering an Oops at snd_usb_ctl_msg(). It was overseen
that snd_usb_ctl_msg() writes back the response to the given buffer,
while the patch changed it to a read-only const buffer. (One should
always double-check when an extra pointer cast is present...)
As a simple fix, just revert the affected commit. It was merely a
cleanup. Although it brings VLA again, it's clearer as a fix. We'll
address the VLA later in another patch.
Fixes: 89b593c30e83 ("ALSA: usb-audio: purge needless variable length array")
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=195875
Cc: <stable@vger.kernel.org> # v4.11+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Colin Ian King [Tue, 30 May 2017 10:39:45 +0000 (11:39 +0100)]
ALSA: pcm: include pcm_local.h and remove some extraneous tabs
We need to include pcm_local.h to clean up some smatch warnings:
symbol 'snd_pcm_timer_done' was not declared. Should it be static?
symbol 'snd_pcm_timer_init' was not declared. Should it be static?
symbol 'snd_pcm_timer_resolution_change' was not declared. Should
it be static?
Also remove some extraneous tabs on empty lines and replace space
intentation with a tab.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Bhumika Goyal [Sat, 27 May 2017 14:46:15 +0000 (20:16 +0530)]
ALSA: declare snd_kcontrol_new structures as const
Declare snd_kcontrol_new structures as const as they are only passed an
argument to the function snd_ctl_new1. This argument is of type const,
so snd_kcontrol_new structures having this property can be made const.
Done using Coccinelle:
@r disable optional_qualifier@
identifier x;
position p;
@@
static struct snd_kcontrol_new x@p={...};
@ok@
identifier r.x;
position p;
@@
snd_ctl_new1(&x@p,...)
@bad@
position p != {r.p,ok.p};
identifier r.x;
@@
x@p
@depends on !bad disable optional_qualifier@
identifier r.x;
@@
+const
struct snd_kcontrol_new x;
Cross compiled these files:
sound/aoa/codecs/tas.c - powerpc
sound/mips/{hal2.c/sgio2audio.c} - mips
sound/ppc/{awacs.c/beep.c/tumbler.c} - powerpc
sound/soc/sh/siu_dai.c - sh
Could not find an architecture to compile sound/sh/aica.c.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Mark Brown [Fri, 26 May 2017 11:42:28 +0000 (12:42 +0100)]
Merge remote-tracking branch 'asoc/fix/rt286' into asoc-linus
Mark Brown [Fri, 26 May 2017 11:42:25 +0000 (12:42 +0100)]
Merge remote-tracking branches 'asoc/fix/atmel', 'asoc/fix/cirrus', 'asoc/fix/da7213', 'asoc/fix/free' and 'asoc/fix/jack' into asoc-linus
Mark Brown [Fri, 26 May 2017 11:42:24 +0000 (12:42 +0100)]
Merge remote-tracking branch 'asoc/fix/rcar' into asoc-linus
Mark Brown [Fri, 26 May 2017 11:42:24 +0000 (12:42 +0100)]
Merge remote-tracking branch 'asoc/fix/intel' into asoc-linus
Kuninori Morimoto [Fri, 26 May 2017 01:44:19 +0000 (01:44 +0000)]
ASoC: rsnd: fixup parent_clk_name of AUDIO_CLKOUTx
commit
25165f79adc7 ("ASoC: rsnd: enable clock-frequency for both
44.1kHz/48kHz") supported both 44.1kHz/48kHz for AUDIO_CLKOUTx,
but it didn't care its parent clock name.
This patch fixes it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Takashi Sakamoto [Fri, 26 May 2017 00:30:46 +0000 (09:30 +0900)]
ALSA: pcm: add local header file for snd-pcm module
Several files are used to construct PCM core module, a.k.a snd-pcm.
Although available APIs are described in 'include/sound/pcm.h', some of
them are not exported as symbols in kernel space. Such APIs are just for
module local usage.
This commit adds module local header file and move some function prototypes
into it so that scopes of them are controlled properly and developers
get no confusion from unavailable symbols.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Fri, 19 May 2017 18:22:33 +0000 (20:22 +0200)]
ALSA: pcm: Call ack() whenever appl_ptr is updated
Although the ack callback is supposed to be called at each appl_ptr or
hw_ptr update, we missed a few opportunities: namely, forward, rewind
and sync_ptr.
Formerly calling ack at rewind may have leaded to unexpected results
due to the forgotten negative appl_ptr update in indirect-PCM helper,
which is the major user of the PCM ack callback. But now we fixed
this oversights, thus we can call ack callback safely even at rewind
callback -- of course with the proper handling of the error from the
callback.
This patch adds the calls of ack callback in the places mentioned in
the above.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Fri, 19 May 2017 16:51:03 +0000 (18:51 +0200)]
staging: bcm2835-audio: Deliver indirect-PCM transfer error
Now that the indirect-PCM transfer helper gives back an error, we
should return the error from ack callbacks.
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Fri, 19 May 2017 16:49:45 +0000 (18:49 +0200)]
ALSA: rme32: Deliver indirect-PCM transfer error
Now that the indirect-PCM transfer helper gives back an error, we
should return the error from ack callbacks.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Fri, 19 May 2017 16:49:23 +0000 (18:49 +0200)]
ALSA: emu10k1: Deliver indirect-PCM transfer error
Now that the indirect-PCM transfer helper gives back an error, we
should return the error from ack callbacks.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Fri, 19 May 2017 16:48:36 +0000 (18:48 +0200)]
ALSA: cs46xx: Deliver indirect-PCM transfer error
Now that the indirect-PCM transfer helper gives back an error, we
should return the error from ack callbacks.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Fri, 19 May 2017 16:41:45 +0000 (18:41 +0200)]
ALSA: mips: Deliver indirect-PCM transfer error
Now that the indirect-PCM transfer helper gives back an error, we
should return the error from ack callbacks.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Fri, 19 May 2017 16:31:03 +0000 (18:31 +0200)]
ALSA: pcm: Fix negative appl_ptr handling in pcm-indirect helpers
The indirect-PCM helper codes have an implicit assumption that the
appl_ptr always increases. But the PCM core may deal with the
decrement of appl_ptr via rewind ioctls, and it may screw up the
buffer pointer management.
This patch adds the negative appl_ptr diff in transfer functions and
let returning an error instead of always accepting the appl_ptr
updates. The callers are usually PCM ack callbacks, and they pass the
error to the upper layer accordingly.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Sakamoto [Tue, 23 May 2017 13:40:42 +0000 (22:40 +0900)]
ALSA: sb: remove needless evaluation in implementation for copy callback
In design of ALSA pcm core, 'struct snd_pcm_ops.copy' is expected to
copy PCM frames, according to frame alignment on intermediate buffer for
userspace and dedicated buffer for data transmission. In this callback,
value of 'channel' argument depends on the frame alignment, which drivers
registers to runtime of PCM substream. When target devices can handle
non-interleaved buffer, this value has positive value, otherwise negative.
ALSA driver for PCM component of EMU8000 chip is programmed with local
macro to switch the frame alignment. The 'copy' operation in
non-interleaved side has evaluation of the 'channel' argument (actually
it's 'voice' argument). This is useless.
This commit remove the evaluation.
[tiwai: the negative channel argument was the inheritance from the old
code where -1 was meant for interleaved mode. The mix-up was dropped
meanwhile, thus it's correct to assume that we receive no longer -1
there, and it's safe to cleanup the relevant code.
Also, voice=0 for channel==1 is trivial, and it can be dropped, too.]
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Sakamoto [Tue, 23 May 2017 13:40:20 +0000 (22:40 +0900)]
ALSA: gus: remove unused local flag
ALSA driver series for devices of Gravis Ultra Sound includes local
variable 'snd_gf1_pcm_use_dma'. Although this is a flag to change
behaviours of local implementations for 'struct snd_pcm_ops.copy' and
'struct snd_pcm_ops.silence', it's invariable during module lifetime.
This commit removes this local variable and the relevant operations.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Shreyas NC [Mon, 15 May 2017 14:14:30 +0000 (19:44 +0530)]
ASoC: Intel: Skylake: Fix to parse consecutive string tkns in manifest
Element size in the manifest should be updated for each token, so that the
loop can parse all the string elements in the manifest. This was not
happening when more than two string elements appear consecutively, as it is
not updated with correct string element size. Fixed with this patch.
Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Pardha Saradhi K [Mon, 15 May 2017 14:14:29 +0000 (19:44 +0530)]
ASoC: Intel: Skylake: Fix IPC rx_list corruption
In SKL+ platforms, all IPC commands are serialised, i.e. the driver sends
a new IPC to DSP, only after receiving a reply from the firmware for the
current IPC.
Hence it seems apparent that there is only a single modifier of the IPC RX
List. However, during an IPC timeout case in a multithreaded environment,
there is a possibility of the list element being deleted two times if not
properly protected.
So, use spin lock save/restore to prevent rx_list corruption.
Signed-off-by: Pardha Saradhi K <pardha.saradhi.kesapragada@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Kuninori Morimoto [Wed, 24 May 2017 01:17:10 +0000 (01:17 +0000)]
ASoC: rsnd: SSI PIO adjust to 24bit mode
commit
90431eb49bff ("ASoC: rsnd: don't use PDTA bit for 24bit on SSI")
fixups 24bit mode data alignment, but PIO was not cared.
This patch fixes PIO mode 24bit data alignment
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Charles Keepax [Wed, 24 May 2017 10:01:32 +0000 (11:01 +0100)]
MAINTAINERS: Update email address for patches to Wolfson parts
A somewhat overdue update of the address for sending patches on Wolfson
parts to since our acquision a couple of years ago by Cirrus Logic.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Takashi Iwai [Wed, 24 May 2017 08:19:45 +0000 (10:19 +0200)]
ASoC: Fix use-after-free at card unregistration
soc_cleanup_card_resources() call snd_card_free() at the last of its
procedure. This turned out to lead to a use-after-free.
PCM runtimes have been already removed via soc_remove_pcm_runtimes(),
while it's dereferenced later in soc_pcm_free() called via
snd_card_free().
The fix is simple: just move the snd_card_free() call to the beginning
of the whole procedure. This also gives another benefit: it
guarantees that all operations have been shut down before actually
releasing the resources, which was racy until now.
Reported-and-tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: <stable@vger.kernel.org>
Takashi Sakamoto [Wed, 24 May 2017 01:04:30 +0000 (10:04 +0900)]
ALSA: control: remove entry limitation for list operation
In current implementation of ALSA control core, list operation has
a limitation to handle 16384 entries at once. This seems due to
allocation in kernel space to copy data from user space.
With a commit
53e7bf452584 ("ALSA: control: Simplify snd_ctl_elem_list()
implementation"), for the operation, ALSA control core copies data
into user space directly. No need to care of kernel spaces anymore.
This commit purges the limitation.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Alexander Tsoy [Mon, 22 May 2017 17:58:11 +0000 (20:58 +0300)]
ALSA: hda - apply STAC_9200_DELL_M22 quirk for Dell Latitude D430
This model is actually called 92XXM2-8 in Windows driver. But since pin
configs for M22 and M28 are identical, just reuse M22 quirk.
Fixes external microphone (tested) and probably docking station ports
(not tested).
Signed-off-by: Alexander Tsoy <alexander@tsoy.me>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Mon, 22 May 2017 15:39:13 +0000 (17:39 +0200)]
ALSA: info: Use kvzalloc() for a temporary write buffer
We used to use kmalloc (more exactly, krealloc()) for creating and
growing the temporary buffer for text proc write. It can grow up to
16kB, and it's already a bit doubtful whether it's always safe to use
kmalloc(). With the recent addition of kvmalloc(), we can have a
better chance for succeed of memory allocation, so let's switch to
that new API.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 10 May 2017 12:33:44 +0000 (14:33 +0200)]
ALSA: pcm: Remove set_fs() in PCM core code
PCM core code has a few usages of set_fs(), mostly for two codepaths:
- The DELAY ioctl call from pcm_compat.c
- The ioctl wrapper in kernel context for PCM OSS and other
This patch removes the set_fs() usage in these places by a slight code
refactoring. For the former point, snd_pcm_delay() is changed to
return the value directly instead of putting the value to the given
address. Each caller stores the result in an appropriate manner.
For fixing the latter, snd_pcm_lib_kernel_ioctl() is changed to call
the functions directly as well. For achieving it, now the function
accepts only the limited set of ioctls that have been used, so far.
The primary user of this function is the PCM OSS layer, and the only
other user is USB UAC1 gadget driver. Both drivers don't need the
full set of ioctls.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Mon, 22 May 2017 15:43:04 +0000 (17:43 +0200)]
ALSA: control: Simplify snd_ctl_elem_list() implementation
This patch simplifies the code of snd_ctl_elem_list() in the following
ways:
- Avoid a vmalloc() temporary buffer but do copy in each iteration;
the vmalloc buffer was introduced at the time we took the spinlock
for the ctl element management.
- Use the standard list_for_each_entry() macro
- Merge two loops into one;
it used to be a loop for skipping until offset becomes zero and
another loop to copy the data. They can be folded into a single
loop easily.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Tested-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Mon, 22 May 2017 14:41:24 +0000 (16:41 +0200)]
ALSA: hda - Update the list of quirk models
I've forgotten to sync the documentation with the actually available
options for some time. Now all updated.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Mon, 22 May 2017 14:38:47 +0000 (16:38 +0200)]
ALSA: hda - Provide dual-codecs model option for a few Realtek codecs
Recently some laptops and mobos are equipped with the dual Realtek
codecs that require special quirks. For making the debugging easier,
add the model "dual-codecs" to be passed via module option.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Mon, 22 May 2017 14:32:46 +0000 (16:32 +0200)]
ALSA: hda - Apply dual-codec quirk for MSI Z270-Gaming mobo
MSI Z270-Gamin mobo has also two ALC1220 codecs like Gigabyte AZ370-
Gaming mobo. Apply the same quirk to this one.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Sakamoto [Mon, 22 May 2017 13:22:21 +0000 (22:22 +0900)]
ALSA: firewire: remove support for 16 bit PCM samples in playback substream
In IEC 61883-6, AM824 is described as format of data block. In this
format, one data block consists of several data channels, which is aligned
to 32 bit. One data channel has 8 bit label field and 24 bit data field.
PCM frames are transferred in Multi Bit Linear Audio (MBLA) data channel.
This channel can include 16/20/24 bit PCM sample.
As long as I know, models which support IEC 61883-1/6 doesn't allow to
switch bit length of PCM sample in MBLA data channel. They always
transmit/receive PCM frames of 24 bit length. This can be seen for the
other models which support protocols similar to IEC 61883-1/6.
On the other hand, current drivers for these protocols supports 16 bit
length PCM sample in playback substream. In this case, PCM sample is put
into the MBLA data channel with 8 bit padding in LSB side. Although 16
bit PCM sample is major because it's in CD format, this doesn't represent
device capability as is.
This commit removes support for 16 bit PCM samples in playback substream.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Acked-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Linus Torvalds [Mon, 22 May 2017 02:30:23 +0000 (19:30 -0700)]
Linux 4.12-rc2
Linus Torvalds [Mon, 22 May 2017 01:26:54 +0000 (18:26 -0700)]
x86: fix 32-bit case of __get_user_asm_u64()
The code to fetch a 64-bit value from user space was entirely buggered,
and has been since the code was merged in early 2016 in commit
b2f680380ddf ("x86/mm/32: Add support for 64-bit __get_user() on 32-bit
kernels").
Happily the buggered routine is almost certainly entirely unused, since
the normal way to access user space memory is just with the non-inlined
"get_user()", and the inlined version didn't even historically exist.
The normal "get_user()" case is handled by external hand-written asm in
arch/x86/lib/getuser.S that doesn't have either of these issues.
There were two independent bugs in __get_user_asm_u64():
- it still did the STAC/CLAC user space access marking, even though
that is now done by the wrapper macros, see commit
11f1a4b9755f
("x86: reorganize SMAP handling in user space accesses").
This didn't result in a semantic error, it just means that the
inlined optimized version was hugely less efficient than the
allegedly slower standard version, since the CLAC/STAC overhead is
quite high on modern Intel CPU's.
- the double register %eax/%edx was marked as an output, but the %eax
part of it was touched early in the asm, and could thus clobber other
inputs to the asm that gcc didn't expect it to touch.
In particular, that meant that the generated code could look like
this:
mov (%eax),%eax
mov 0x4(%eax),%edx
where the load of %edx obviously was _supposed_ to be from the 32-bit
word that followed the source of %eax, but because %eax was
overwritten by the first instruction, the source of %edx was
basically random garbage.
The fixes are trivial: remove the extraneous STAC/CLAC entries, and mark
the 64-bit output as early-clobber to let gcc know that no inputs should
alias with the output register.
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: stable@kernel.org # v4.8+
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 21 May 2017 22:25:46 +0000 (15:25 -0700)]
Clean up x86 unsafe_get/put_user() type handling
Al noticed that unsafe_put_user() had type problems, and fixed them in
commit
a7cc722fff0b ("fix unsafe_put_user()"), which made me look more
at those functions.
It turns out that unsafe_get_user() had a type issue too: it limited the
largest size of the type it could handle to "unsigned long". Which is
fine with the current users, but doesn't match our existing normal
get_user() semantics, which can also handle "u64" even when that does
not fit in a long.
While at it, also clean up the type cast in unsafe_put_user(). We
actually want to just make it an assignment to the expected type of the
pointer, because we actually do want warnings from types that don't
convert silently. And it makes the code more readable by not having
that one very long and complex line.
[ This patch might become stable material if we ever end up back-porting
any new users of the unsafe uaccess code, but as things stand now this
doesn't matter for any current existing uses. ]
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 21 May 2017 19:06:44 +0000 (12:06 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs
Pull misc uaccess fixes from Al Viro:
"Fix for unsafe_put_user() (no callers currently in mainline, but
anyone starting to use it will step into that) + alpha osf_wait4()
infoleak fix"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
osf_wait4(): fix infoleak
fix unsafe_put_user()
Linus Torvalds [Sun, 21 May 2017 18:52:00 +0000 (11:52 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull scheduler fix from Thomas Gleixner:
"A single scheduler fix:
Prevent idle task from ever being preempted. That makes sure that
synchronize_rcu_tasks() which is ignoring idle task does not pretend
that no task is stuck in preempted state. If that happens and idle was
preempted on a ftrace trampoline the machine crashes due to
inconsistent state"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/core: Call __schedule() from do_idle() without enabling preemption
Linus Torvalds [Sun, 21 May 2017 18:45:26 +0000 (11:45 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
"A set of small fixes for the irq subsystem:
- Cure a data ordering problem with chained interrupts
- Three small fixlets for the mbigen irq chip"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq: Fix chained interrupt data ordering
irqchip/mbigen: Fix the clear register offset calculation
irqchip/mbigen: Fix potential NULL dereferencing
irqchip/mbigen: Fix memory mapping code
Al Viro [Mon, 15 May 2017 01:47:25 +0000 (21:47 -0400)]
osf_wait4(): fix infoleak
failing sys_wait4() won't fill struct rusage...
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sun, 21 May 2017 17:08:42 +0000 (13:08 -0400)]
fix unsafe_put_user()
__put_user_size() relies upon its first argument having the same type as what
the second one points to; the only other user makes sure of that and
unsafe_put_user() should do the same.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Bhumika Goyal [Wed, 17 May 2017 12:13:30 +0000 (17:43 +0530)]
ALSA: mixart: constify snd_kcontrol_new structures
Declare snd_kcontrol_new structures as const as they are only passed an
argument to the function snd_ctl_new1. This argument is of type const,
so snd_kcontrol_new structures having this property can be made const.
Done using Coccinelle:
@r disable optional_qualifier@
identifier x;
position p;
@@
static struct snd_kcontrol_new x@p={...};
@ok@
identifier r.x;
position p;
@@
snd_ctl_new1(&x@p,...)
@bad@
position p != {r.p,ok.p};
identifier r.x;
@@
x@p
@depends on !bad disable optional_qualifier@
identifier r.x;
@@
+const
struct snd_kcontrol_new x;
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Bhumika Goyal [Wed, 17 May 2017 12:09:03 +0000 (17:39 +0530)]
ALSA: cs46xx: constify snd_kcontrol_new structures
Declare snd_kcontrol_new structures as const as they are only passed an
argument to the function snd_ctl_new1. This argument is of type const,
so snd_kcontrol_new structures having this property can be made const.
Done using Coccinelle:
@r disable optional_qualifier@
identifier x;
position p;
@@
static struct snd_kcontrol_new x@p={...};
@ok@
identifier r.x;
position p;
@@
snd_ctl_new1(&x@p,...)
@bad@
position p != {r.p,ok.p};
identifier r.x;
@@
x@p
@depends on !bad disable optional_qualifier@
identifier r.x;
@@
+const
struct snd_kcontrol_new x;
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Bhumika Goyal [Wed, 17 May 2017 11:50:46 +0000 (17:20 +0530)]
ALSA: ice1712: constify snd_kcontrol_new structures
Declare snd_kcontrol_new structures as const as they are only passed an
argument to the function snd_ctl_new1. This argument is of type const,
so snd_kcontrol_new structures having this property can be made const.
Done using Coccinelle:
@r disable optional_qualifier@
identifier x;
position p;
@@
static struct snd_kcontrol_new x@p={...};
@ok@
identifier r.x;
position p;
@@
snd_ctl_new1(&x@p,...)
@bad@
position p != {r.p,ok.p};
identifier r.x;
@@
x@p
@depends on !bad disable optional_qualifier@
identifier r.x;
@@
+const
struct snd_kcontrol_new x;
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Bhumika Goyal [Wed, 17 May 2017 11:38:56 +0000 (17:08 +0530)]
ALSA: sound/isa: constify snd_kcontrol_new structures
Declare snd_kcontrol_new structures as const as they are only passed an
argument to the function snd_ctl_new1. This argument is of type const,
so snd_kcontrol_new structures having this property can be made const.
Done using Coccinelle:
@r disable optional_qualifier@
identifier x;
position p;
@@
static struct snd_kcontrol_new x@p={...};
@ok@
identifier r.x;
position p;
@@
snd_ctl_new1(&x@p,...)
@bad@
position p != {r.p,ok.p};
identifier r.x;
@@
x@p
@depends on !bad disable optional_qualifier@
identifier r.x;
@@
+const
struct snd_kcontrol_new x;
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Fri, 19 May 2017 18:16:44 +0000 (20:16 +0200)]
ALSA: pcm: Simplify forward/rewind codes
Factor out the common codes in snd_pcm_*_forward() and *_rewind()
functions to simplify the codes. No functional changes.
Reviewd-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Fri, 19 May 2017 18:04:23 +0000 (20:04 +0200)]
ALSA: pcm: Use a common helper for PCM state check and hwsync
The mostly same codes for checking the current PCM state and calling
hwsync are found in a few places. This patch simplifies them by
creating a common helper function.
It also fixes a couple of cases where we missed the proper state check
(e.g. PAUSED state wasn't handled in rewind and snd_pcm_hwsync()),
too.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Linus Torvalds [Sun, 21 May 2017 06:39:03 +0000 (23:39 -0700)]
Merge tag 'trace-v4.12-rc1' of git://git./linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
- Fix a bug caused by not cleaning up the new instance unique triggers
when deleting an instance. It also creates a selftest that triggers
that bug.
- Fix the delayed optimization happening after kprobes boot up self
tests being removed by freeing of init memory.
- Comment kprobes on why the delay optimization is not a problem for
removal of modules, to keep other developers from searching that
riddle.
- Fix another case of rcu not watching in stack trace tracing.
* tag 'trace-v4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Make sure RCU is watching before calling a stack trace
kprobes: Document how optimized kprobes are removed from module unload
selftests/ftrace: Add test to remove instance with active event triggers
selftests/ftrace: Fix bashisms
ftrace: Remove #ifdef from code and add clear_ftrace_function_probes() stub
ftrace/instances: Clear function triggers when removing instances
ftrace: Simplify glob handling in unregister_ftrace_function_probe_func()
tracing/kprobes: Enforce kprobes teardown after testing
tracing: Move postpone selftests to core from early_initcall
Linus Torvalds [Sat, 20 May 2017 23:12:30 +0000 (16:12 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A small collection of fixes that should go into this cycle.
- a pull request from Christoph for NVMe, which ended up being
manually applied to avoid pulling in newer bits in master. Mostly
fibre channel fixes from James, but also a few fixes from Jon and
Vijay
- a pull request from Konrad, with just a single fix for xen-blkback
from Gustavo.
- a fuseblk bdi fix from Jan, fixing a regression in this series with
the dynamic backing devices.
- a blktrace fix from Shaohua, replacing sscanf() with kstrtoull().
- a request leak fix for drbd from Lars, fixing a regression in the
last series with the kref changes. This will go to stable as well"
* 'for-linus' of git://git.kernel.dk/linux-block:
nvmet: release the sq ref on rdma read errors
nvmet-fc: remove target cpu scheduling flag
nvme-fc: stop queues on error detection
nvme-fc: require target or discovery role for fc-nvme targets
nvme-fc: correct port role bits
nvme: unmap CMB and remove sysfs file in reset path
blktrace: fix integer parse
fuseblk: Fix warning in super_setup_bdi_name()
block: xen-blkback: add null check to avoid null pointer dereference
drbd: fix request leak introduced by locking/atomic, kref: Kill kref_sub()
Vijay Immanuel [Mon, 8 May 2017 23:38:35 +0000 (16:38 -0700)]
nvmet: release the sq ref on rdma read errors
On rdma read errors, release the sq ref that was taken
when the req was initialized. This avoids a hang in
nvmet_sq_destroy() when the queue is being freed.
Signed-off-by: Vijay Immanuel <vijayi@attalasystems.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
James Smart [Tue, 25 Apr 2017 23:23:09 +0000 (16:23 -0700)]
nvmet-fc: remove target cpu scheduling flag
Remove NVMET_FCTGTFEAT_NEEDS_CMD_CPUSCHED. It's unnecessary.
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>