openwrt/staging/blogic.git
11 years agoBluetooth: Add Bluetooth socket voice option
Frédéric Dalleau [Mon, 19 Aug 2013 12:23:56 +0000 (14:23 +0200)]
Bluetooth: Add Bluetooth socket voice option

This patch extends the current Bluetooth socket options with BT_VOICE.
This is intended to choose voice data type at runtime. It only applies
to SCO sockets. Incoming connections shall be setup during deferred
setup. Outgoing connections shall be setup before connect(). The desired
setting is stored in the SCO socket info. This patch declares needed
members, modifies getsockopt() and setsockopt().

Signed-off-by: Frédéric Dalleau <frederic.dalleau@linux.intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: Remove unused mask parameter in sco_conn_defer_accept
Frédéric Dalleau [Mon, 19 Aug 2013 12:23:55 +0000 (14:23 +0200)]
Bluetooth: Remove unused mask parameter in sco_conn_defer_accept

From Bluetooth Core v4.0 specification, 7.1.8 Accept Connection Request
Command "When accepting synchronous connection request, the Role
parameter is not used and will be ignored by the BR/EDR Controller."

Signed-off-by: Frédéric Dalleau <frederic.dalleau@linux.intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: Use hci_connect_sco directly
Frédéric Dalleau [Mon, 19 Aug 2013 12:23:54 +0000 (14:23 +0200)]
Bluetooth: Use hci_connect_sco directly

hci_connect is a super function for connecting hci protocols. But the
voice_setting parameter (introduced in subsequent patches) is only
needed by SCO and security requirements are not needed for SCO channels.
Thus, it makes sense to have a separate function for SCO.

Signed-off-by: Frédéric Dalleau <frederic.dalleau@linux.intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: Purge the dlc->tx_queue to avoid circular dependency
Gianluca Anzolin [Mon, 29 Jul 2013 15:08:13 +0000 (17:08 +0200)]
Bluetooth: Purge the dlc->tx_queue to avoid circular dependency

In rfcomm_tty_cleanup we purge the dlc->tx_queue which may contain
socket buffers referencing the tty_port and thus preventing the tty_port
destruction.

Signed-off-by: Gianluca Anzolin <gianluca@sottospazio.it>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: Fix the reference counting of tty_port
Gianluca Anzolin [Mon, 29 Jul 2013 15:08:12 +0000 (17:08 +0200)]
Bluetooth: Fix the reference counting of tty_port

The tty_port can be released in two cases: when we get a HUP in the
functions rfcomm_tty_hangup() and rfcomm_dev_state_change(). Or when the
user releases the device in rfcomm_release_dev().

In these cases we set the flag RFCOMM_TTY_RELEASED so that no other
function can get a reference to the tty_port.
The use of !test_and_set_bit(RFCOMM_TTY_RELEASED) ensures that the
'initial' tty_port reference is only dropped once.

The rfcomm_dev_del function is removed becase it isn't used anymore.

Signed-off-by: Gianluca Anzolin <gianluca@sottospazio.it>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: Implement .activate, .shutdown and .carrier_raised methods
Gianluca Anzolin [Mon, 29 Jul 2013 15:08:11 +0000 (17:08 +0200)]
Bluetooth: Implement .activate, .shutdown and .carrier_raised methods

Implement .activate, .shutdown and .carrier_raised methods of tty_port
to manage the dlc, moving the code from rfcomm_tty_install() and
rfcomm_tty_cleanup() functions.

At the same time the tty .open()/.close() and .hangup() methods are
changed to use the tty_port helpers that properly call the
aforementioned tty_port methods.

Signed-off-by: Gianluca Anzolin <gianluca@sottospazio.it>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: Move the tty initialization and cleanup out of open/close
Gianluca Anzolin [Mon, 29 Jul 2013 15:08:10 +0000 (17:08 +0200)]
Bluetooth: Move the tty initialization and cleanup out of open/close

Move the tty_struct initialization from rfcomm_tty_open() to
rfcomm_tty_install() and do the same for the cleanup moving the code from
rfcomm_tty_close() to rfcomm_tty_cleanup().

Add also extra error handling in rfcomm_tty_install() because, unlike
.open()/.close(), .cleanup() is not called if .install() fails.

Signed-off-by: Gianluca Anzolin <gianluca@sottospazio.it>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: Remove the device from the list in the destructor
Gianluca Anzolin [Mon, 29 Jul 2013 15:08:09 +0000 (17:08 +0200)]
Bluetooth: Remove the device from the list in the destructor

The current code removes the device from the device list in several
places. Do it only in the destructor instead and in the error path of
rfcomm_add_dev() if the device couldn't be initialized.

Signed-off-by: Gianluca Anzolin <gianluca@sottospazio.it>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: Take proper tty_struct references
Gianluca Anzolin [Mon, 29 Jul 2013 15:08:08 +0000 (17:08 +0200)]
Bluetooth: Take proper tty_struct references

In net/bluetooth/rfcomm/tty.c the struct tty_struct is used without
taking references. This may lead to a use-after-free of the rfcomm tty.

Fix this by taking references properly, using the tty_port_* helpers
when possible.

The raw assignments of dev->port.tty in rfcomm_tty_open/close are
addressed in the later commit 'rfcomm: Implement .activate, .shutdown
and .carrier_raised methods'.

Signed-off-by: Gianluca Anzolin <gianluca@sottospazio.it>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: Set different event mask for LE-only controllers
Marcel Holtmann [Tue, 13 Aug 2013 17:00:54 +0000 (10:00 -0700)]
Bluetooth: Set different event mask for LE-only controllers

In case of a Low Energy only controller it makes no sense to configure
the full BR/EDR event mask. It will just enable events that can not be
send anyway and there is no guarantee that such a controller will accept
this value.

Use event mask 0x90 0xe8 0x04 0x02 0x00 0x80 0x00 0x20 for LE-only
controllers which enables the following events:

          Disconnection Complete
          Encryption Change
          Read Remote Version Information Complete
          Command Complete
          Command Status
          Hardware Error
          Number of Completed Packets
          Data Buffer Overflow
          Encryption Key Refresh Complete
          LE Meta

This is according to Core Specification, Part E, Section 3.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: Fix getting SCO socket options in deferred state
Johan Hedberg [Thu, 8 Aug 2013 11:53:56 +0000 (14:53 +0300)]
Bluetooth: Fix getting SCO socket options in deferred state

When a socket is in deferred state there does actually exist an
underlying connection even though the connection state is not yet
BT_CONNECTED. In the deferred state it should therefore be allowed to
get socket options that usually depend on a connection, such as
SCO_OPTIONS and SCO_CONNINFO.

This patch fixes the behavior of some user space code that behaves as
follows without it:

$ sudo tools/btiotest -i 00:1B:DC:xx:xx:xx -d -s
accept=2 reject=-1 discon=-1 defer=1 sec=0 update_sec=0 prio=0 voice=0x0000
Listening for SCO connections
bt_io_get(OPT_DEST): getsockopt(SCO_OPTIONS): Transport endpoint is not connected (107)
Accepting connection
Successfully connected to 60:D8:19:xx:xx:xx. handle=43, class=000000

The conditions that the patch updates the if-statements to is taken from
similar code in l2cap_sock.c which correctly handles the deferred state.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: use DIV_ROUND_UP in suitable places in btmrvl_sdio
Andy Shevchenko [Fri, 2 Aug 2013 11:10:12 +0000 (14:10 +0300)]
Bluetooth: use DIV_ROUND_UP in suitable places in btmrvl_sdio

There are two places where DIV_ROUND_UP may be used. It makes code a bit
clearer.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: replace strict_strtol() with kstrtol()
Jingoo Han [Fri, 19 Jul 2013 07:09:38 +0000 (16:09 +0900)]
Bluetooth: replace strict_strtol() with kstrtol()

The usage of strict_strtol() is not preferred, because
strict_strtol() is obsolete. Thus, kstrtol() should be
used.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: hidp: remove wrong send_report at init
Benjamin Tissoires [Thu, 11 Jul 2013 13:41:30 +0000 (15:41 +0200)]
Bluetooth: hidp: remove wrong send_report at init

The USB hid implementation does retrieve the reports during the start.
However, this implementation does not call the HID command GET_REPORT
(which would fetch the current status of each report), but use the
DATA command, which is an Output Report (so transmitting data from the
host to the device).
The Wiimote controller is already guarded against this problem in the
protocol, but it is not conformant to the specification to set all the
reports to 0 on start.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: hidp: implement hidinput_input_event callback
Benjamin Tissoires [Thu, 11 Jul 2013 13:41:29 +0000 (15:41 +0200)]
Bluetooth: hidp: implement hidinput_input_event callback

We can re-enable hidinput_input_event to allow the leds of bluetooth
keyboards to be set.
Now the callbacks uses hid core to retrieve the right HID report to
send, so this version is safer.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: Add missing braces to an "else if"
Gustavo Padovan [Fri, 7 Dec 2012 05:29:10 +0000 (03:29 -0200)]
Bluetooth: Add missing braces to an "else if"

Trivial change in the coding style.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: Use defines instead of integer literals
Mikel Astiz [Fri, 28 Jun 2013 08:56:29 +0000 (10:56 +0200)]
Bluetooth: Use defines instead of integer literals

Replace the occurrences of integer literals in hci_event.c with the
newly introduced macros in hci.h.

Signed-off-by: Mikel Astiz <mikel.astiz@bmw-carit.de>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: Use defines in in hci_get_auth_req()
Mikel Astiz [Fri, 28 Jun 2013 08:56:28 +0000 (10:56 +0200)]
Bluetooth: Use defines in in hci_get_auth_req()

Make the code in hci_get_auth_req() more readable by using the
defined macros instead of inlining magic numbers.

Signed-off-by: Mikel Astiz <mikel.astiz@bmw-carit.de>
Signed-off-by: Timo Mueller <timo.mueller@bmw-carit.de>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: Add HCI authentication capabilities macros
Mikel Astiz [Fri, 28 Jun 2013 08:56:27 +0000 (10:56 +0200)]
Bluetooth: Add HCI authentication capabilities macros

Add macros for the HCI capabilities as described in the Bluetooth Core
Specification v4.0, Volume 2, part E, section 7.1.29.

Signed-off-by: Mikel Astiz <mikel.astiz@bmw-carit.de>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agoBluetooth: Fix simple whitespace vs tab style issue
Marcel Holtmann [Mon, 1 Jul 2013 21:14:46 +0000 (14:14 -0700)]
Bluetooth: Fix simple whitespace vs tab style issue

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
11 years agobgmac: make bgmac depend on bcm47xx
Hauke Mehrtens [Tue, 23 Jul 2013 21:28:49 +0000 (23:28 +0200)]
bgmac: make bgmac depend on bcm47xx

bgmac uses bcm47xx_nvram.h which is only available when BCM47XX was
selected. Earlier BCMA_HOST_SOC depended on BCM47XX so this was not
build on any other archs, but that changed. We should modify this
driver to get access to the nvram or the variables through platform
data.

This fixes a build problem in linux-next reported by Stephen Rothwell:

drivers/net/ethernet/broadcom/bgmac.c:19:27: fatal error: bcm47xx_nvram.h: No such file or directory
 #include <bcm47xx_nvram.h>
                           ^

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agowireless: rt2x00: rt2800usb: add RT3573 devices
Xose Vazquez Perez [Tue, 23 Jul 2013 12:55:15 +0000 (14:55 +0200)]
wireless: rt2x00: rt2800usb: add RT3573 devices

taken from Ralink linux and windows drivers:

0x1b75, 0x7733 AirLive 450Mbps Wireless-N Dual Band USB Adapter
0x0b05, 0x17bc ASUS USB-N66 450Mbps Dual Band USB Adapter
0x0b05, 0x17ad ASUS USB-N66 Dual Band N Network Adapter
0x050d, 0x1103 Belkin Wireless Adapter
0x148f, 0xf301 Cameo Ralink3573 3x3 single band USB dongle
0x7392, 0x7733 Edimax
0x0e66, 0x0020 Hawking HD45U Dual Band USB Wireless-N Adapter
0x0e66, 0x0021 Hawking HD45U Dual Band Wls-450N Adapter
0x04bb, 0x094e I-O DATA WN-AG450U Wireless LAN Adapter
0x0789, 0x016b Logitec LAN-W450AN/U2
0x0846, 0x9012 NETGEAR WNDA4100 N900 Wireless Dual Band USB Adapter
0x0846, 0x9019 NETGEAR WNDA4200D Wireless Dual Band USB Adapter
0x2019, 0xed19 Planex GW-USDual450
0x148f, 0x3573 Ralink 802.11n USB Wireless LAN Card
0x0df6, 0x0067 Sitecom Wireless Dualband Network Adapter N750 X6
0x0df6, 0x006a Sitecom Wireless Dualband Network Adapter N900 X7
0x0586, 0x3421 ZyXEL Dual-Band Wireless N450 USB Adapter

Cc: Ivo van Doorn <IvDoorn@gmail.com>
Cc: Gertjan van Wingerde <gwingerde@gmail.com>
Cc: Helmut Schaa <helmut.schaa@googlemail.com>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: users@rt2x00.serialmonkey.com
Cc: linux-wireless@vger.kernel.org
Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agoath9k: Fix diversity combining for AR9285
Sujith Manoharan [Tue, 23 Jul 2013 10:55:17 +0000 (16:25 +0530)]
ath9k: Fix diversity combining for AR9285

When antenna diversity combining is enabled in the EEPROM,
the initial values for the MAIN/ALT config have to be
programmed correctly. This patch adds it for AR9285.

Since the diversity combining macros are common to all chip
families, remove the redundant AR9285 macros and move the
definitions to phy.h.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: modify mwifiex_ap_sta_limits to advertise support for P2P
Avinash Patil [Tue, 23 Jul 2013 02:17:58 +0000 (19:17 -0700)]
mwifiex: modify mwifiex_ap_sta_limits to advertise support for P2P

We support maximum simultaneous 2 non-AP station interfaces and
they can assume role of Station/P2P client/P2P GO.
Advertise this support to cfg80211 so that concurrent P2P/STA
operation is possible.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: remove duplicate structure host_cmd_tlv
Amitkumar Karwar [Tue, 23 Jul 2013 02:17:57 +0000 (19:17 -0700)]
mwifiex: remove duplicate structure host_cmd_tlv

We already have 'struct mwifiex_ie_types_header' with same
definition. Hence host_cmd_tlv is removed in this patch.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: correction in mwifiex_check_fw_status() return status
Amitkumar Karwar [Tue, 23 Jul 2013 02:17:54 +0000 (19:17 -0700)]
mwifiex: correction in mwifiex_check_fw_status() return status

For PCIe cards, when wrong firmware is downloaded, firmware is
failed to be ready in 10 seconds. We should return an error at
this point. But currently we are sending first command to firmware.
As expected firmware doesn't respond to this command and command
timeout occurs.

This patch fixes the problem by removing unnecessary 'ret'
variable modifications in "if (ret) {" block.
The block is just supposed to update "adapter->winner" flag.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: replace mdelay with msleep
Amitkumar Karwar [Tue, 23 Jul 2013 02:17:53 +0000 (19:17 -0700)]
mwifiex: replace mdelay with msleep

It is observed that when wrong firmware is downloaded for
PCIe card, system hangs for 10 seconds. The reason is mdelay()
is used when firmware status is polled.

Replace mdelay with msleep(non-blocking API) to fix the issue.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: reduce firmware poll retries
Amitkumar Karwar [Tue, 23 Jul 2013 02:17:52 +0000 (19:17 -0700)]
mwifiex: reduce firmware poll retries

After downloading the firmware, firmware status is checked by
reading a register. Polling interval is 100 msecs. Therefore 100
retries means the status is checked for 10 secs which is more than
sufficient for firmware to get ready.

This patch removes 1000 retries macro usage, because 100secs
time is not practical.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: add unregister_dev handler for usb interface
Amitkumar Karwar [Tue, 23 Jul 2013 02:17:51 +0000 (19:17 -0700)]
mwifiex: add unregister_dev handler for usb interface

Clear the data pointer stored in USB interface structure in
this handler. This helps to return from mwifiex_usb_disconnect()
if driver deinitialization is already performed while handling
an error path for mwifiex_usb_probe().

USB8797 card gets enumerated twice. First enumeration is for
firmware download and second enumeration expects firmware
initialization. mwifiex_usb_probe() always takes care of
deinitialization for first enumeration after firmware download.

Also, this change matches our handling for SDIO and PCIe
interfaces.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: move if_ops.cleanup_if() call
Amitkumar Karwar [Tue, 23 Jul 2013 02:17:50 +0000 (19:17 -0700)]
mwifiex: move if_ops.cleanup_if() call

As if_ops.init_if() is called in mwifiex_register(),
corresponding cleanup routine should be called in
mwifiex_unregister().

Currently it's there in mwifiex_adapter_cleanup(), hence
interface specific cleanup is not performed if driver
initialization is failed.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: remove unnecessary del_timer(cmd_timer)
Amitkumar Karwar [Tue, 23 Jul 2013 02:17:49 +0000 (19:17 -0700)]
mwifiex: remove unnecessary del_timer(cmd_timer)

It is already there in mwifiex_unregister(). So unnecessary
call in mwifiex_adapter_cleanup() is removed in this patch.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: move del_timer_sync(scan_delay_timer) call to fix memleak
Amitkumar Karwar [Tue, 23 Jul 2013 02:17:48 +0000 (19:17 -0700)]
mwifiex: move del_timer_sync(scan_delay_timer) call to fix memleak

Currently it is in mwifiex_adapter_cleanup() which doesn't get
called if driver initialization is failed causing memory leak.

scan_delay_timer is initialized in mwifiex_register(), so it
should be deleted in mwifiex_unregister(). Hence it has been
moved to appropriate place.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: add PCIe shutdown handler to avoid system hang on reboot
Amitkumar Karwar [Tue, 23 Jul 2013 02:17:47 +0000 (19:17 -0700)]
mwifiex: add PCIe shutdown handler to avoid system hang on reboot

If reboot command is issued when device is in connected state,
system hangs while booting. This issue is fixed by doing cleanup
in shutdown handler.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: correct max IE length check for WPS IE
Avinash Patil [Tue, 23 Jul 2013 02:17:46 +0000 (19:17 -0700)]
mwifiex: correct max IE length check for WPS IE

This patch is bug fix for an invalid boundry check for WPS IE.
We should check max IE length against defined macro; instead we were
checking it against size of pointer. Fix it.
Also move IE length check before allocation of memory.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: support to send deauth for P2P client
Stone Piao [Tue, 23 Jul 2013 02:17:45 +0000 (19:17 -0700)]
mwifiex: support to send deauth for P2P client

During P2P handshake, P2P client needs to send deauth after EAPOL
FAILURE to GO. We need add bss mode for P2P client when handle deauth
request.

Without this change, deauth can not be sent out from P2P client side.

Signed-off-by: Stone Piao <piaoyun@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: skip registering mgmt frame that has already registered
Stone Piao [Tue, 23 Jul 2013 02:17:44 +0000 (19:17 -0700)]
mwifiex: skip registering mgmt frame that has already registered

Before sending command to firmware, we need to check the frame type.
We skip registering the mgmt frame that has already been registered.

Signed-off-by: Stone Piao <piaoyun@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: discard deauth and disassoc event during WPS session
Stone Piao [Tue, 23 Jul 2013 02:17:43 +0000 (19:17 -0700)]
mwifiex: discard deauth and disassoc event during WPS session

Some GO will send deauth or disassoc packet at the end of WPS
handshake, which causes P2P connecion failure due to the race
condition between event path and data path.

Signed-off-by: Stone Piao <piaoyun@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: add tx info to skb when forming mgmt frame
Huawei Yang [Tue, 23 Jul 2013 02:17:42 +0000 (19:17 -0700)]
mwifiex: add tx info to skb when forming mgmt frame

In function 'mwifiex_write_data_complete' it need tx info to find
the mwifiex_private to updates statistics and wake up tx queues.
Or we may trigger tx queues timeout when transmitting lots of mgmt
frames.

Signed-off-by: Huawei Yang <harvey.huawei.yang@gmail.com>
Signed-off-by: Stone Piao <piaoyun@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: delete AP TX queues when bridged packets reach threshold
Avinash Patil [Tue, 23 Jul 2013 02:17:41 +0000 (19:17 -0700)]
mwifiex: delete AP TX queues when bridged packets reach threshold

Delete packets from TX queues for this mwifiex_private structure
when bridged packet count reaches maximum threshold. Bridged packets
from each RA List are deleted till they fall to low threshold of 128.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: maintain outstanding packet count for RA list instead of packet size
Avinash Patil [Tue, 23 Jul 2013 02:17:40 +0000 (19:17 -0700)]
mwifiex: maintain outstanding packet count for RA list instead of packet size

Maintain total outstanding packet count for RA list instead of total
outstanding size as packet count metric seems more reasonable for
checking threshold etc.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: rename pkt_count to ba_pkt_count in mwifiex_ra_list_tbl struct
Avinash Patil [Tue, 23 Jul 2013 02:17:39 +0000 (19:17 -0700)]
mwifiex: rename pkt_count to ba_pkt_count in mwifiex_ra_list_tbl struct

pkt_count is used to determine if BA can be formed on this RA list
by comparing it with randomly generated BA threshold. The pkt_count
variable name here is ambiguous and does not reflect its usage
correctly. Rename it to ba_pkt_count.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agomwifiex: remove stop_net_dev_queue operation in AP forwarding
Huawei Yang [Tue, 23 Jul 2013 02:17:38 +0000 (19:17 -0700)]
mwifiex: remove stop_net_dev_queue operation in AP forwarding

Under uAP mode mwifiex may stop all net tx queues on forwarding
packets. This may stop some tx queues and they never have chance
to be waked up. There is also no need to check tx_pending and
stop queues here. Because local host has such kind of check when
transmitting packets and it's not proper to have forwarding affect
local transmitting.

Signed-off-by: Huawei Yang <harvey.huawei.yang@gmail.com>
Reviewed-by: Avinash Patil <patila@marvell.com>
Acked-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agoiwl3945: better skb management in rx path
Eric Dumazet [Fri, 28 Jun 2013 15:05:06 +0000 (08:05 -0700)]
iwl3945: better skb management in rx path

Steinar reported reallocations of skb->head with IPv6, leading to
a warning in skb_try_coalesce()

It turns out iwl3945 has several problems :

1) skb->truesize is underestimated.
   We really consume PAGE_SIZE bytes for a fragment,
   not the frame length.
2) 128 bytes of initial headroom is a bit low and forces reallocations.
3) We can avoid consuming a full page for small enough frames.

Reported-by: Steinar H. Gunderson <sesse@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Paul Stewart <pstew@google.com>
Acked-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agowil6210: drop -Werror compiler flag
Vladimir Kondratiev [Mon, 22 Jul 2013 09:53:48 +0000 (12:53 +0300)]
wil6210: drop -Werror compiler flag

In production code, don't use -Werror,
as it causes random compilation failures due to compiler version and options used.

With every new version of gcc, it becomes stricter and report more warnings.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agoMAINTAINERS: update ath6kl git location
Kalle Valo [Mon, 22 Jul 2013 09:32:27 +0000 (12:32 +0300)]
MAINTAINERS: update ath6kl git location

The git tree is in github.com nowadays.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agoMAINTAINERS: add ath10k
Kalle Valo [Mon, 22 Jul 2013 09:32:20 +0000 (12:32 +0300)]
MAINTAINERS: add ath10k

I forgot to add an entry to MAINTAINERS when submitting the driver.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agowil6210: Enable TCP/UDP checksum HW offload
Kirshenbaum Erez [Sun, 21 Jul 2013 08:34:37 +0000 (11:34 +0300)]
wil6210: Enable TCP/UDP checksum HW offload

Add support for TCP and UDP HW checksum offloading.
RX chain is allways configured for offload mode.
In case of checksum error in RX path the DMA L4 error bit(5)
will be set to 1 and driver will drop the packet.
TX checksum offloading is configrable (ethtool -K).
TX descriptors are configured for checksum offload according
to the SKB protocol type (TCP/UDP, IPV4/6), Upon mismatch drop
the TX packet (checksum required but not TCP/UDP IPV4/6 type).

Signed-off-by: Kirshenbaum Erez <erezk@wilocity.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agowil6210: fix error path in wil_tx_vring
Vladimir Kondratiev [Sun, 21 Jul 2013 08:34:36 +0000 (11:34 +0300)]
wil6210: fix error path in wil_tx_vring

Release fragments in the order of allocation; including one for skb head

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agocw1200: Fix incorrect endianness annotation in a header field
Solomon Peachy [Sat, 20 Jul 2013 04:02:25 +0000 (00:02 -0400)]
cw1200: Fix incorrect endianness annotation in a header field

Note that the driver doesn't directly use this field, but it should be
correctly defined in any case.

Signed-off-by: Solomon Peachy <pizza@shaftnet.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agoath9k: Release the RF bus after setting board values
Sujith Manoharan [Tue, 16 Jul 2013 06:33:22 +0000 (12:03 +0530)]
ath9k: Release the RF bus after setting board values

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agoath9k: Program correct initvals for FCC
Sujith Manoharan [Tue, 16 Jul 2013 06:33:21 +0000 (12:03 +0530)]
ath9k: Program correct initvals for FCC

* CUS217 specific initvals have to be programmed.
* iniAdditional is not used for AR9462/AR9565, remove it.
* Handle channel 2484 for regulatory compliance.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agoath9k: Use correct channel when switching bands
Sujith Manoharan [Tue, 16 Jul 2013 06:33:20 +0000 (12:03 +0530)]
ath9k: Use correct channel when switching bands

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agoath9k: Fix FastChannelChange for AR9462/AR9565
Sujith Manoharan [Tue, 16 Jul 2013 06:33:19 +0000 (12:03 +0530)]
ath9k: Fix FastChannelChange for AR9462/AR9565

Right now, even though these chips support cross-band
FCC, the code is non-functional since we bail out early if
the channelFlags differ. Fix this so that cross-band
FCC works for cards that support this feature.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agoath9k: Add a HW flag for FCC
Sujith Manoharan [Tue, 16 Jul 2013 06:33:18 +0000 (12:03 +0530)]
ath9k: Add a HW flag for FCC

Fast Channel Change across 2G/5G bands is supported
only by AR9462 and AR9565. Add a HW capability field
to indicate this.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agoath9k: Move INI overrides to ar9003_hw_override_ini
Sujith Manoharan [Tue, 16 Jul 2013 06:33:17 +0000 (12:03 +0530)]
ath9k: Move INI overrides to ar9003_hw_override_ini

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agobrcmsmac: Further reduce log spam from tx phy messages
John Greene [Mon, 15 Jul 2013 18:33:34 +0000 (14:33 -0400)]
brcmsmac: Further reduce log spam from tx phy messages

Relegate 2 phy messages to debug status as they create excessive
log spam, noted in multiple bugzillas for brcmsmac v3.8 and up.
This is a follow on to net-next 99e94940697adec4f84758adb2db71f4a82c7ba5:
brcmsmac: Reduce log spam in heavy tx, make err print in debug

 brcmsmac bcma0:0: phyerr 0x10, rate 0x14
 brcmsmac bcma0:0: brcms_c_ampdu_dotxstatus_complete:
ampdu tx phy error (0x10)

Signed-off-by: John Greene <jogreene@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agobcma: fix handling of big addrl
Hauke Mehrtens [Mon, 15 Jul 2013 11:15:08 +0000 (13:15 +0200)]
bcma: fix handling of big addrl

The return value of bcma_erom_get_addr_desc() is a unsigned value and it
could wrap around in the two complement writing. This happens for one
core in the BCM4708 SoC.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agobcma: return correct error code when bus scan failed
Hauke Mehrtens [Mon, 15 Jul 2013 11:15:07 +0000 (13:15 +0200)]
bcma: return correct error code when bus scan failed

It is better to return the actual error code than just -1.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agobcma: add constants for new ARM based SoCs
Hauke Mehrtens [Mon, 15 Jul 2013 11:15:06 +0000 (13:15 +0200)]
bcma: add constants for new ARM based SoCs

These are the chipIDs of some ARM based SoCs from the BCM47xx line.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agobcma: make it possible to select SoC support without mips
Hauke Mehrtens [Mon, 15 Jul 2013 11:15:05 +0000 (13:15 +0200)]
bcma: make it possible to select SoC support without mips

To make it possible to use the SoC host interface with ARM SoCs do not
depend on the MIPS driver any more.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agobcma: add some more core names
Hauke Mehrtens [Mon, 15 Jul 2013 11:15:04 +0000 (13:15 +0200)]
bcma: add some more core names

These cores were found on a BCM4708 (chipid 53010), this is a ARM SoC
with two Cortex A9 cores.

bcma: bus0: Found chip with id 0xCF12, rev 0x00 and package 0x02
bcma: bus0: Core 0 found: ChipCommon (manuf 0x4BF, id 0x800, rev 0x2A, class 0x0)
bcma: bus0: Core 1 found: DMA (manuf 0x4BF, id 0x502, rev 0x01, class 0x0)
bcma: bus0: Core 2 found: GBit MAC (manuf 0x4BF, id 0x82D, rev 0x04, class 0x0)
bcma: bus0: Core 3 found: GBit MAC (manuf 0x4BF, id 0x82D, rev 0x04, class 0x0)
bcma: bus0: Core 4 found: GBit MAC (manuf 0x4BF, id 0x82D, rev 0x04, class 0x0)
bcma: bus0: Core 5 found: GBit MAC (manuf 0x4BF, id 0x82D, rev 0x04, class 0x0)
bcma: bus0: Core 6 found: PCIe Gen 2 (manuf 0x4BF, id 0x501, rev 0x01, class 0x0)
bcma: bus0: Core 7 found: PCIe Gen 2 (manuf 0x4BF, id 0x501, rev 0x01, class 0x0)
bcma: bus0: Core 8 found: ARM Cortex A9 core (ihost) (manuf 0x4BF, id 0x510, rev 0x01, class 0x0)
bcma: bus0: Core 9 found: USB 2.0 (manuf 0x4BF, id 0x504, rev 0x01, class 0x0)
bcma: bus0: Core 10 found: USB 3.0 (manuf 0x4BF, id 0x505, rev 0x01, class 0x0)
bcma: bus0: Core 11 found: SDIO3 (manuf 0x4BF, id 0x503, rev 0x01, class 0x0)
bcma: bus0: Core 12 found: ARM Cortex A9 JTAG (manuf 0x4BF, id 0x506, rev 0x01, class 0x0)
bcma: bus0: Core 13 found: Denali DDR2/DDR3 memory controller (manuf 0x4BF, id 0x507, rev 0x01, class 0x0)
bcma: bus0: Core 14 found: ROM (manuf 0x4BF, id 0x508, rev 0x01, class 0x0)
bcma: bus0: Core 15 found: NAND flash controller (manuf 0x4BF, id 0x509, rev 0x01, class 0x0)
bcma: bus0: Core 16 found: SPI flash controller (manuf 0x4BF, id 0x50A, rev 0x01, class 0x0)

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agowil6210: fix subtle race in wil_tx_vring
Vladimir Kondratiev [Thu, 11 Jul 2013 15:03:41 +0000 (18:03 +0300)]
wil6210: fix subtle race in wil_tx_vring

Finish all SW context modifications prior to notifying hardware

It used to be race condition: if HW finish Tx and issue Tx completion IRQ very fast,
prior to SW context update in wil_tx_vring, Tx completion will mis-handle descriptor, as
SW part will have no skb pointer stored.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agowil6210: Introduce struct for sw context
Vladimir Kondratiev [Thu, 11 Jul 2013 15:03:40 +0000 (18:03 +0300)]
wil6210: Introduce struct for sw context

Enable adding more data to the SW context.
For now, add flag "mapped_as_page", to separate decisions on free-ing skb
and type of DMA mapping.
This allows linking skb itself to any descriptor of fragmented skb.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agowil6210: Optimize Tx completion
Vladimir Kondratiev [Thu, 11 Jul 2013 15:03:39 +0000 (18:03 +0300)]
wil6210: Optimize Tx completion

No need to modify HW descriptor, as it will be re-initialized on Tx.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agowil6210: fix wrong index in wil_vring_free
Vladimir Kondratiev [Thu, 11 Jul 2013 15:03:38 +0000 (18:03 +0300)]
wil6210: fix wrong index in wil_vring_free

When destroying Rx vring, branch for Rx used wrong Tx descriptor:
while SW context was taken for "head", HW descriptor was, by mistake,
taken from "tail"

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agowil6210: Align WMI header with latest FW
Vladimir Kondratiev [Thu, 11 Jul 2013 15:03:37 +0000 (18:03 +0300)]
wil6210: Align WMI header with latest FW

FW guys changed header structure; align driver code

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800usb: add USB device ID for Linksys AE3000
Gabor Juhos [Mon, 8 Jul 2013 14:08:35 +0000 (16:08 +0200)]
rt2x00: rt2800usb: add USB device ID for Linksys AE3000

The Linksys AE3000 device is based on the RT3573
chipset. The support for this chipset is available
already, and the AE3000 device works with the driver.

Only managed mode works correctly at the moment,
for AP mode additional changes are needed in the
driver.

Also add a new RT2800USB_RT3573 Kconfig option and
only enable support for RT3573 based devices if
that is enabled.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800usb: use correct [RT]XWI size for RT3593
Gabor Juhos [Mon, 8 Jul 2013 14:08:34 +0000 (16:08 +0200)]
rt2x00: rt2800usb: use correct [RT]XWI size for RT3593

The RT3593 chipset requires different [RT]XWI size
values. Modify the driver to use the correct values.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: enable RT3593 support
Gabor Juhos [Mon, 8 Jul 2013 14:08:33 +0000 (16:08 +0200)]
rt2x00: rt2800lib: enable RT3593 support

Support for the RT3593 has been implemented in
the previous changes, so it is safe to mark it
supported in the driver.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: enable RF3053 support
Gabor Juhos [Mon, 8 Jul 2013 14:08:32 +0000 (16:08 +0200)]
rt2x00: rt2800lib: enable RF3053 support

Support for the RF3053 has been implemented in
the previous changes, so it is safe to mark it
supported in the driver.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: enable VCO recalibration for RF3053
Gabor Juhos [Mon, 8 Jul 2013 14:08:31 +0000 (16:08 +0200)]
rt2x00: rt2800lib: enable VCO recalibration for RF3053

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: add channel configuration for RF3053
Gabor Juhos [Mon, 8 Jul 2013 14:08:30 +0000 (16:08 +0200)]
rt2x00: rt2800lib: add channel configuration for RF3053

Based on the Ralink DPO_RT5572_LinuxSTA_2.6.0.1_20120629
driver.

Reference:
  RT3593_ChipSwitchChannel in chips/rt3593.c

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: add rf_vals for RF3053
Gabor Juhos [Mon, 8 Jul 2013 14:08:29 +0000 (16:08 +0200)]
rt2x00: rt2800lib: add rf_vals for RF3053

Based on the Ralink DPO_RT5572_LinuxSTA_2.6.0.1_20120629
driver.

References:
  FreqItems3053 in chips/rt3593.c

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: add default_power3 field for three-chain devices
Gabor Juhos [Mon, 8 Jul 2013 14:08:28 +0000 (16:08 +0200)]
rt2x00: rt2800lib: add default_power3 field for three-chain devices

The actual code uses two default TX power values.
This is enough for 1T and for 2T devices however
on 3T devices another value is needed for the third
chain.

Add a new field to struct channel_info and initialize
it from the 'rt2800_probe_hw_mode' function. Also modify
the 'rt2800_config_channel' to handle the new field as
well.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: fix LNA_A[12] gain values for RT3593
Gabor Juhos [Mon, 8 Jul 2013 14:08:27 +0000 (16:08 +0200)]
rt2x00: rt2800lib: fix LNA_A[12] gain values for RT3593

The LNA_A[12] gain values are stored at a different
offset in the EEPROM on RT3593 based devices. However
the current code unconditionally reads those values
from the location used by other chipsets.

Fix the code to use the correct EEPROM offset.

Based on the DPO_RT5572_LinuxSTA_2.6.0.1_20120629
driver.

References:
  RT3593_EEPROM_RSSI2_OFFSET_ALNAGAIN1_24G_READ in include/chip/rt3593.h
  RT3593_EEPROM_RSSI2_OFFSET_ALNAGAIN2_5G_READ in include/chip/rt3593.h

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: hardcode TX mixer gain values for RT3593
Gabor Juhos [Mon, 8 Jul 2013 14:08:26 +0000 (16:08 +0200)]
rt2x00: rt2800lib: hardcode TX mixer gain values for RT3593

The reference code uses hardcoded zero TX mixer gain value
for RT3593. Do the same in the rt2x00 driver.

Based on the Ralink DPO_RT5572_LinuxSTA_2.6.0.1_20120629
driver.

Reference:
  NICReadEEPROMParameters in common/rtmp_init.c

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: introduce rt2800_get_txmixer_gain_{24,5}g helpers
Gabor Juhos [Mon, 8 Jul 2013 14:08:25 +0000 (16:08 +0200)]
rt2x00: rt2800lib: introduce rt2800_get_txmixer_gain_{24,5}g helpers

Move the TX mixer gain reading code into separate
helper functions in preparation for RT3593 support.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: fix default TX power values for RT3593
Gabor Juhos [Mon, 8 Jul 2013 14:08:24 +0000 (16:08 +0200)]
rt2x00: rt2800lib: fix default TX power values for RT3593

The TX power values in the EEPROM are using
a different format for the RT3593 chip. The
default TX power value uses bits 0..4 only.
Bits 5..8 contains value for fine grained
power control. Additionally, the lower and
upper limits of the TX power values are the
same for both bands.

Improve the rt2800_txpower_to_dev function,
in order to compute the correct default power
values for the RT3593 chip as well.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: add rt2800_txpower_to_dev helper
Gabor Juhos [Mon, 8 Jul 2013 14:08:23 +0000 (16:08 +0200)]
rt2x00: rt2800lib: add rt2800_txpower_to_dev helper

Introduce a new helper function for converting
the default TX power values from EEPROM into
mac80211 values.

The change improves the readability and it makes
it easier to add support for other chipsets.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: fix antenna configuration for RT3593
Gabor Juhos [Mon, 8 Jul 2013 14:08:22 +0000 (16:08 +0200)]
rt2x00: rt2800lib: fix antenna configuration for RT3593

On the RT3593 chipset, BBP register 86 must be
configured by different values based on the RX
antenna numbers.

Configure this register from the 'rt2800_config_ant'
function.

Based on the Ralink DPO_RT5572_LinuxSTA_2.6.0.1_20120629
driver.

Reference:
  RT3593_CONFIG_SET_BY_ANTENNA in include/chip/rt3593.h

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: fix BBP1_TX_ANTENNA field configuration for 3T devices
Gabor Juhos [Mon, 8 Jul 2013 14:08:21 +0000 (16:08 +0200)]
rt2x00: rt2800lib: fix BBP1_TX_ANTENNA field configuration for 3T devices

The field must be set to 2 instead of 0 for
devices with three TX chains.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: add TX power configuration for RT3593
Gabor Juhos [Mon, 8 Jul 2013 14:08:20 +0000 (16:08 +0200)]
rt2x00: rt2800lib: add TX power configuration for RT3593

Based on the Ralink DPO_RT5572_LinuxSTA_2.6.0.1_20120629
driver.

References:
  RTMPReadTxPwrPerRateExt in chips/rt3593.c
  RT3593_AsicGetTxPowerOffset in chips/rt3593.c

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: add BBP post initialization for RT3593
Gabor Juhos [Mon, 8 Jul 2013 14:08:19 +0000 (16:08 +0200)]
rt2x00: rt2800lib: add BBP post initialization for RT3593

Based on the Ralink DPO_RT5572_LinuxSTA_2.6.0.1_20120629
driver.

Reference:
  RT3593_PostBBPInitialization in chips/rt3553.c

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: add RFCSR register initialization for RT3593
Gabor Juhos [Mon, 8 Jul 2013 14:08:18 +0000 (16:08 +0200)]
rt2x00: rt2800lib: add RFCSR register initialization for RT3593

Based on the Ralink DPO_RT5572_LinuxSTA_2.6.0.1_20120629
driver.

References:
  NICInitRT3593RFRegisters in chips/rt3593.c
  RT3593LoadRFNormalModeSetup in chips/rt3593.c

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: add BBP register initialization for RT3593
Gabor Juhos [Mon, 8 Jul 2013 14:08:17 +0000 (16:08 +0200)]
rt2x00: rt2800lib: add BBP register initialization for RT3593

Based on the Ralink DPO_RT5572_LinuxSTA_2.6.0.1_20120629
driver.

References:
  NICInitRT3593BbpRegisters in chips/rt3593.c
  NICInitBBP in common/rtmp_init.c
  NICInitAsicFromEEPROM in common/rtmp_init.c

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: add MAC register initialization for RT3593
Gabor Juhos [Mon, 8 Jul 2013 14:08:16 +0000 (16:08 +0200)]
rt2x00: rt2800lib: add MAC register initialization for RT3593

Based on the Ralink DPO_RT5572_LinuxSTA_2.6.0.1_20120629
driver.

Reference:
  NICInitRT3593MacRegisters in chips/rt3593.c

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: add EEPROM map for the RT3593 chipset
Gabor Juhos [Mon, 8 Jul 2013 09:25:56 +0000 (11:25 +0200)]
rt2x00: rt2800lib: add EEPROM map for the RT3593 chipset

Three-chain devices are using a different
EEPROM layout than the rest of the chipsets.
Add a new map which describes the new layout
and use that for the RT3593 chipset.

The index values has been computed from the
EEPROM_EXT_* defines, which can be found in
the 'include/chip/rt3593.h' file in the
Ralink DPO_RT5572_LinuxSTA_2.6.0.1_20120629
driver.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: introduce rt2800_eeprom_word_index helper
Gabor Juhos [Mon, 8 Jul 2013 09:25:55 +0000 (11:25 +0200)]
rt2x00: rt2800lib: introduce rt2800_eeprom_word_index helper

Instead of assign the offset value to the
enum directly use a new helper function to
convert a rt2800_eeprom_word enum into an
index of the rt2x00_dev->eeprom array.

The patch does not change the existing
behaviour, but makes it possible to add
support for three-chain devices which are
using a different EEPROM layout.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: introduce rt2800_eeprom_read_from_array helper
Gabor Juhos [Mon, 8 Jul 2013 09:25:54 +0000 (11:25 +0200)]
rt2x00: rt2800lib: introduce rt2800_eeprom_read_from_array helper

Add a new helper function and use that for reading
single elements of various arrays in the EEPROM.

The patch does not change the current behaviour,
but it allows to use sequential values for the
rt2800_eeprom_word enums. The conversion will be
implemented in a subsequent change.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: introduce local EEPROM access functions
Gabor Juhos [Mon, 8 Jul 2013 09:25:53 +0000 (11:25 +0200)]
rt2x00: rt2800lib: introduce local EEPROM access functions

The patch adds rt2800 specific functions for
EEPROM data access and changes the code to use
these instead of the generic rt2x00_eeprom_*
variants.

To avoid functional changes, the new functions
are wrappers around the corresponding generic
rt2x00_eeprom_* routines for now. Functional
changes will be implemented in additional patches.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agort2x00: rt2800lib: introduce rt2800_eeprom_word enum
Gabor Juhos [Mon, 8 Jul 2013 09:25:52 +0000 (11:25 +0200)]
rt2x00: rt2800lib: introduce rt2800_eeprom_word enum

The patch converts the EEPROM_* word address defines
into new enum values. The new enum type will be used
by new functions which will be introduced in subsequent
changes.

The patch contains no functional changes.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agoath9k: Fix RTS threshold
Sujith Manoharan [Thu, 4 Jul 2013 07:29:47 +0000 (12:59 +0530)]
ath9k: Fix RTS threshold

Currently, RTS threshold is not handled for HT. Handle
user-specified threshold values for both aggregated
and unaggregated frames. Use the wiphy's threshold
parameter for now, it can be made per-VIF later on.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agoath9k: make rfkill configurable
Johannes Berg [Wed, 3 Jul 2013 18:55:38 +0000 (20:55 +0200)]
ath9k: make rfkill configurable

When the platform doesn't have rfkill support, i.e. nothing
is connected to the rfkill GPIO, there's little value in
polling the GPIO. Add a Kconfig option to allow disabling
the polling in ath9k.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agowireless: Convert mwifiex/pcie to dev_pm_ops from legacy pm_ops
Shuah Khan [Wed, 3 Jul 2013 16:47:10 +0000 (10:47 -0600)]
wireless: Convert mwifiex/pcie to dev_pm_ops from legacy pm_ops

Convert the mwifiex/pci driver to use dev_pm_ops for power management and
remove Legacy PM handling. This change re-uses existing suspend and resume
interfaces for dev_pm_ops, and changes CONFIG_PM ifdefs to CONFIG_PM_SLEEP
as the driver does not support run-time PM.

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Acked-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
11 years agoLinux 3.11-rc1
Linus Torvalds [Sun, 14 Jul 2013 22:18:27 +0000 (15:18 -0700)]
Linux 3.11-rc1

11 years agoMerge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penber...
Linus Torvalds [Sun, 14 Jul 2013 22:14:29 +0000 (15:14 -0700)]
Merge branch 'slab/for-linus' of git://git./linux/kernel/git/penberg/linux

Pull slab update from Pekka Enberg:
 "Highlights:

  - Fix for boot-time problems on some architectures due to
    init_lock_keys() not respecting kmalloc_caches boundaries
    (Christoph Lameter)

  - CONFIG_SLUB_CPU_PARTIAL requested by RT folks (Joonsoo Kim)

  - Fix for excessive slab freelist draining (Wanpeng Li)

  - SLUB and SLOB cleanups and fixes (various people)"

I ended up editing the branch, and this avoids two commits at the end
that were immediately reverted, and I instead just applied the oneliner
fix in between myself.

* 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux
  slub: Check for page NULL before doing the node_match check
  mm/slab: Give s_next and s_stop slab-specific names
  slob: Check for NULL pointer before calling ctor()
  slub: Make cpu partial slab support configurable
  slab: add kmalloc() to kernel API documentation
  slab: fix init_lock_keys
  slob: use DIV_ROUND_UP where possible
  slub: do not put a slab to cpu partial list when cpu_partial is 0
  mm/slub: Use node_nr_slabs and node_nr_objs in get_slabinfo
  mm/slub: Drop unnecessary nr_partials
  mm/slab: Fix /proc/slabinfo unwriteable for slab
  mm/slab: Sharing s_next and s_stop between slab and slub
  mm/slab: Fix drain freelist excessively
  slob: Rework #ifdeffery in slab.h
  mm, slab: moved kmem_cache_alloc_node comment to correct place

11 years agoslub: Check for page NULL before doing the node_match check
Steven Rostedt [Thu, 17 Jan 2013 18:10:58 +0000 (13:10 -0500)]
slub: Check for page NULL before doing the node_match check

In the -rt kernel (mrg), we hit the following dump:

BUG: unable to handle kernel NULL pointer dereference at           (null)
IP: [<ffffffff811573f1>] kmem_cache_alloc_node+0x51/0x180
PGD a2d39067 PUD b1641067 PMD 0
Oops: 0000 [#1] PREEMPT SMP
Modules linked in: sunrpc cpufreq_ondemand ipv6 tg3 joydev sg serio_raw pcspkr k8temp amd64_edac_mod edac_core i2c_piix4 e100 mii shpchp ext4 mbcache jbd2 sd_mod crc_t10dif sr_mod cdrom sata_svw ata_generic pata_acpi pata_serverworks radeon ttm drm_kms_helper drm hwmon i2c_algo_bit i2c_core dm_mirror dm_region_hash dm_log dm_mod
CPU 3
Pid: 20878, comm: hackbench Not tainted 3.6.11-rt25.14.el6rt.x86_64 #1 empty empty/Tyan Transport GT24-B3992
RIP: 0010:[<ffffffff811573f1>]  [<ffffffff811573f1>] kmem_cache_alloc_node+0x51/0x180
RSP: 0018:ffff8800a9b17d70  EFLAGS: 00010213
RAX: 0000000000000000 RBX: 0000000001200011 RCX: ffff8800a06d8000
RDX: 0000000004d92a03 RSI: 00000000000000d0 RDI: ffff88013b805500
RBP: ffff8800a9b17dc0 R08: ffff88023fd14d10 R09: ffffffff81041cbd
R10: 00007f4e3f06e9d0 R11: 0000000000000246 R12: ffff88013b805500
R13: ffff8801ff46af40 R14: 0000000000000001 R15: 0000000000000000
FS:  00007f4e3f06e700(0000) GS:ffff88023fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000000 CR3: 00000000a2d3a000 CR4: 00000000000007e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process hackbench (pid: 20878, threadinfo ffff8800a9b16000, task ffff8800a06d8000)
Stack:
 ffff8800a9b17da0 ffffffff81202e08 ffff8800a9b17de0 000000d001200011
 0000000001200011 0000000001200011 0000000000000000 0000000000000000
 00007f4e3f06e9d0 0000000000000000 ffff8800a9b17e60 ffffffff81041cbd
Call Trace:
 [<ffffffff81202e08>] ? current_has_perm+0x68/0x80
 [<ffffffff81041cbd>] copy_process+0xdd/0x15b0
 [<ffffffff810a2125>] ? rt_up_read+0x25/0x30
 [<ffffffff8104369a>] do_fork+0x5a/0x360
 [<ffffffff8107c66b>] ? migrate_enable+0xeb/0x220
 [<ffffffff8100b068>] sys_clone+0x28/0x30
 [<ffffffff81527423>] stub_clone+0x13/0x20
 [<ffffffff81527152>] ? system_call_fastpath+0x16/0x1b
Code: 89 fc 89 75 cc 41 89 d6 4d 8b 04 24 65 4c 03 04 25 48 ae 00 00 49 8b 50 08 4d 8b 28 49 8b 40 10 4d 85 ed 74 12 41 83 fe ff 74 27 <48> 8b 00 48 c1 e8 3a 41 39 c6 74 1b 8b 75 cc 4c 89 c9 44 89 f2
RIP  [<ffffffff811573f1>] kmem_cache_alloc_node+0x51/0x180
 RSP <ffff8800a9b17d70>
CR2: 0000000000000000
---[ end trace 0000000000000002 ]---

Now, this uses SLUB pretty much unmodified, but as it is the -rt kernel
with CONFIG_PREEMPT_RT set, spinlocks are mutexes, although they do
disable migration. But the SLUB code is relatively lockless, and the
spin_locks there are raw_spin_locks (not converted to mutexes), thus I
believe this bug can happen in mainline without -rt features. The -rt
patch is just good at triggering mainline bugs ;-)

Anyway, looking at where this crashed, it seems that the page variable
can be NULL when passed to the node_match() function (which does not
check if it is NULL). When this happens we get the above panic.

As page is only used in slab_alloc() to check if the node matches, if
it's NULL I'm assuming that we can say it doesn't and call the
__slab_alloc() code. Is this a correct assumption?

Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Sun, 14 Jul 2013 18:42:26 +0000 (11:42 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs

Pull more vfs stuff from Al Viro:
 "O_TMPFILE ABI changes, Oleg's fput() series, misc cleanups, including
  making simple_lookup() usable for filesystems with non-NULL s_d_op,
  which allows us to get rid of quite a bit of ugliness"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  sunrpc: now we can just set ->s_d_op
  cgroup: we can use simple_lookup() now
  efivarfs: we can use simple_lookup() now
  make simple_lookup() usable for filesystems that set ->s_d_op
  configfs: don't open-code d_alloc_name()
  __rpc_lookup_create_exclusive: pass string instead of qstr
  rpc_create_*_dir: don't bother with qstr
  llist: llist_add() can use llist_add_batch()
  llist: fix/simplify llist_add() and llist_add_batch()
  fput: turn "list_head delayed_fput_list" into llist_head
  fs/file_table.c:fput(): add comment
  Safer ABI for O_TMPFILE

11 years agosunrpc: now we can just set ->s_d_op
Al Viro [Sun, 14 Jul 2013 13:55:39 +0000 (17:55 +0400)]
sunrpc: now we can just set ->s_d_op

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agocgroup: we can use simple_lookup() now
Al Viro [Sun, 14 Jul 2013 13:50:23 +0000 (17:50 +0400)]
cgroup: we can use simple_lookup() now

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>