- 04 Aug, 2015 3 commits
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Takashi Iwai authored
commit 1ee23fe0 upstream. The recent addition of the USB audio mixer suspend/resume may lead to deadlocks when the driver tries to call usb_autopm_get_interface() recursively, since the function tries to sync with the finish of the other calls. For avoiding it, introduce a flag indicating the resume operation and avoids the recursive usb_autopm_get_interface() calls during the resume. Reported-and-tested-by: Bryan Quigley <gquigs@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Takashi Iwai authored
commit 1c53e725 upstream. The suspend callback of usb-audio driver may be called multiple times per suspend when multiple USB interfaces are bound to a single sound card instance. In such a case, it's superfluous to save the mixer values multiple times. This patch fixes it by checking the counter. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Takashi Iwai authored
commit 400362f1 upstream. Implement reset_resume callback so that the mixer values are properly restored. Still no boot quirks are called, so it might not work well on some devices. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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- 30 Jul, 2015 37 commits
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Libin Yang authored
commit 432ac1a2 upstream. Skylake and Haswell have the same behavior on display audio. So this patch applys Haswell fix-ups to Skylake. Signed-off-by: Libin Yang <libin.yang@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Libin Yang authored
commit 99fcb377 upstream. This patch adds codec ID (0x80862809) and module alias for Skylake display codec. Signed-off-by: Libin Yang <libin.yang@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Libin Yang authored
commit db48abf4 upstream. The total stream number of Sunrise Point's input and output stream exceeds 15, which will cause some streams do not work because of the overflow on SDxCTL.STRM field if using the legacy stream tag allocation method. This patch uses the new stream tag allocation method by add the flag AZX_DCAPS_SEPARATE_STREAM_TAG for Skylake platform. Signed-off-by: Libin Yang <libin.yang@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Libin Yang authored
commit d6795827 upstream. The total stream number of Skylake's input and output stream exceeds 15, which will cause some streams do not work because of the overflow on SDxCTL.STRM field if using the legacy stream tag allocation method. This patch uses the new stream tag allocation method by add the flag AZX_DCAPS_SEPARATE_STREAM_TAG for Skylake platform. Signed-off-by: Libin Yang <libin.yang@intel.com> Reviewed-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Rafal Redzimski authored
commit 93e3423e upstream. Implemented separate stream_tag assignment for input and output streams. According to hda specification stream tag must be unique throughout the input streams group, however an output stream might use a stream tag which is already in use by an input stream. This change is necessary to support HW which provides a total of more than 15 stream DMA engines which with legacy implementation causes an overflow on SDxCTL.STRM field (and the whole SDxCTL register) and as a result usage of Reserved value 0 in the SDxCTL.STRM field which confuses HDA controller. Signed-off-by: Rafal Redzimski <rafal.f.redzimski@intel.com> Signed-off-by: Jayachandran B <jayachandran.b@intel.com> Signed-off-by: Libin Yang <libin.yang@intel.com> Reviewed-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Mengdong Lin authored
commit 2df6742f upstream. This is a temporary fix for some Intel HDMI codecs to avoid no sound output for a resuming playback after S3. After S3, the audio driver restores pin:cvt connection selections by snd_hda_codec_resume_cache(). However this can happen before the gfx side is ready and such connect selection is overlooked by HW. After gfx is ready, the pins make the default selection again. And this will cause multiple pins share a same convertor and mute control will affect each other. Thus a resumed audio playback become silent after S3. This patch verifies pin:cvt connection on preparing a stream, to assure the pin selects the right convetor and an assigned convertor is not shared by other unused pins. Apply this fix-up on Haswell, Broadwell and Valleyview (Baytrail). We need this temporary fix before a reliable software communication channel is established between audio and gfx, to sync audio/gfx operations. Signed-off-by: Mengdong Lin <mengdong.lin@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Devin Ryles authored
commit b4565913 upstream. This patch adds DeviceIDs for Sunrise Point-LP Signed-off-by: Devin Ryles <devin.ryles@intel.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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James Ralston authored
commit c8b00fd2 upstream. This patch adds the HD Audio Device IDs for the Intel Sunrise Point PCH. [the item position rearranged by tiwai] Signed-off-by: James Ralston <james.d.ralston@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Takashi Iwai authored
commit 4758fed9 upstream. The zero-length connection list happens so often on Haswell HDMI, and it results in warning messages like ALSA: hda_codec: invalid CONNECT_LIST verb 5[1]:0 at each time the codec resumes from the power-save, which is fairly annoying. Since this is no real error, make it shown only in the verbose debug mode. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Takashi Iwai authored
commit 1c37c223 upstream. The headphone and mic jacks on Thinkpad T440 are assigned to pins NID 0x16 and 0x19, respectively. These need to be set up manually by a fixup. Reported-and-tested-by: Joschi Brauchle <joschi.brauchle@tum.de> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Paolo Bonzini authored
commit ce40cd3f upstream. Malicious (or egregiously buggy) userspace can trigger it, but it should never happen in normal operation. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Fabio Estevam authored
commit b136faff upstream. 'channels' is allocated via kmemdup and it is never freed in the subsequent error paths. Use 'indio_dev->channels' directly instead, so that we avoid such memory leak problem. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org> Cc: Oliver Neukum <ONeukum@suse.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Fabio Estevam authored
commit d8c9d23e upstream. 'channels' is allocated via kmemdup and it is never freed in the subsequent error paths. Use 'indio_dev->channels' directly instead, so that we avoid such memory leak problem. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org> Cc: Oliver Neukum <ONeukum@suse.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Fabio Estevam authored
commit 9ecdbed7 upstream. 'channels' is allocated via kmemdup and it is never freed in the subsequent error paths. Use 'indio_dev->channels' directly instead, so that we avoid such memory leak problem. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org> Cc: Oliver Neukum <ONeukum@suse.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Dan Carpenter authored
commit 4a102b4d upstream. There is a bug in omap2_mbox_probe() where we try do: mbox->irq = platform_get_irq(pdev, info->irq_id); if (mbox->irq < 0) { The problem is that mbox->irq is unsigned so the error handling doesn't work. I've changed it to a signed integer. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Suman Anna <s-anna@ti.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Omar Ramirez Luna <omar.ramirez@copitl.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oliver Neukum <ONeukum@suse.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Bill Richardson authored
commit a865a589 upstream. This module has always been GPL licensed. It was just missing the explicit declaration to avoid tainting the kernel. Signed-off-by: Bill Richardson <wfrichar@chromium.org> Signed-off-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Jiri Slaby authored
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Ping Cheng authored
commit 368c9664 upstream. On Feb 17, 2014, two new usages are approved to HID usage Table 18 - Digitizer Page: 5A Secondary Barrel Switch MC 16.4 5B Transducer Serial Number SV 16.3.1 This patch adds relevant definitions to hid/input. It also removes outdated comments in hid.h. Signed-off-by: Ping Cheng <pingc@wacom.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: Oliver Neukum <ONeukum@suse.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Olivier Gay authored
commit f362e690 upstream. Add some missing hid usages from consumer page, add some display brightness control usages from approved hid usage table request HUTTR41: http://www.usb.org/developers/hidpage/HUTRR41.pdf and add voice command usage from approved request HUTTR45: http://www.usb.org/developers/hidpage/Voice_Command_Usage.pdf [jkosina@suse.cz: removed KEY_BRIGHTNESS_TOGGLE / KEY_DISPLAYTOGGLE conflict from hid-debug.c] Signed-off-by: Olivier Gay <ogay@logitech.com> Signed-off-by: Mathieu Meisser <mmeisser@logitech.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: Oliver Neukum <ONeukum@suse.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Hans de Goede authored
commit 5820e4d4 upstream. Add mapping for "AL Next Task/Application", "AL Previous Task/Application" and "AL File Browser" buttons, as found on the Microsoft Office keyboard. Note that there already is a mapping for "AL Local Machine Browser" to KEY_FILE. Unless we ever encounter a device with both that should not be a problem. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: Oliver Neukum <ONeukum@suse.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Srinivas Pandruvada authored
commit f74346a0 upstream. Fix issue with the sleeping calling hid_hw_request under spinlock. When i2c is used as HID transport, this is calling kmalloc, which can sleep. So remove call to this function while under spinlock. [ 1067.021961] Call Trace: [ 1067.021970] [<ffffffff8192f5f2>] dump_stack+0x4d/0x6f [ 1067.021976] [<ffffffff811109f2>] __might_sleep+0xd2/0xf0 [ 1067.021981] [<ffffffff811ea15b>] __kmalloc+0xeb/0x200 [ 1067.021989] [<ffffffff816e0cb3>] ? hid_alloc_report_buf+0x23/0x30 [ 1067.021993] [<ffffffff816e0cb3>] hid_alloc_report_buf+0x23/0x30 [ 1067.021997] [<ffffffff816f4cb7>] i2c_hid_request+0x57/0x110 [ 1067.022006] [<ffffffffa02bc61c>] sensor_hub_input_attr_get_raw_value+0xbc/0x100 [hid_sensor_hub] Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: Oliver Neukum <ONeukum@suse.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Tomas Sokorai authored
commit 7c7606a2 upstream. They need to have the class SERIAL. Note: it is a Win 7 panel, not Win 8 certified. Signed-off-by: Tomas Sokorai <tsokorai@gmail.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: Oliver Neukum <ONeukum@suse.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Andrew Duggan authored
commit 9abebedb upstream. Multitouch touchpads built for Win 8.1 need to be sent an input mode feature report in order to start reporting multitouch events. This is the same process sent to Win 7 multitouch touchscreens except the value of the feature report is 3 for touchpads. Signed-off-by: Andrew Duggan <aduggan@synaptics.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: Oliver Neukum <ONeukum@suse.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Simon Wood authored
commit 6b5625b2 upstream. It has been reported that there is a new hardware version of the G27 in the 'wild'. This patch add's this new revision so that it can be sent the command to switch to native mode. Reported-by: "Ivan Baldo" <ibaldo@adinet.com.uy> Tested-by: "evilcow" <evilcow93@yahoo.com> Signed-off-by: Simon Wood <simon@mungewell.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: Oliver Neukum <ONeukum@suse.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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David Herrmann authored
commit 3ccfd0a8 upstream. We need at least HID_MAX_BUFFER_SIZE (4096) bytes as input buffer. HID core depends on this as it requires every input report to be at least as big as advertised. Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: Oliver Neukum <ONeukum@suse.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Guennadi Liakhovetski authored
commit a028c6da upstream. On r-/sh-mobile SoCs MSTP clocks are used by the runtime PM to dynamically enable and disable peripheral clocks. To make sure the clock has really started we have to read back its status register until it confirms success. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Jiri Slaby <jslaby@suse.com>
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Yoshihiro Shimoda authored
commit 11313746 upstream. On R-Mobile APE6, since it has 3 thermal zones, ENR register has enable bits in bit 19-16, bit 11-8 and bit 3-0. However, on R-Car gen2, since it has 1 thermal zone, ENR register has enable bits in bit 3-0. (In other words, the write value should always be 0 for bit 31-4 of ENR register.) So, this patch fixes the ENR register value using I/O resource sets. Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Jiri Slaby <jslaby@suse.com>
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Lukasz Majewski authored
commit 26bb0e9a upstream. It turns out that some boards can have instance->lower greater than 0 and when thermal trend is dropping it results with next_target equal to -1. Since the next_target is defined as unsigned long it is interpreted as 0xFFFFFFFF and larger than instance->upper. As a result the next_target is set to instance->upper which ramps up to maximal cooling device target when the temperature is steadily decreasing. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Cc: Mason <slash.tmp@free.fr> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Uwe Kleine-König authored
commit e5babdf9 upstream. Since commit bd31b859 (which is in 3.2-rc1) nw_gpio_lock is a raw spinlock that needs usage of the corresponding raw functions. This fixes: drivers/mtd/maps/dc21285.c: In function 'nw_en_write': drivers/mtd/maps/dc21285.c:41:340: warning: passing argument 1 of 'spinlock_check' from incompatible pointer type spin_lock_irqsave(&nw_gpio_lock, flags); In file included from include/linux/seqlock.h:35:0, from include/linux/time.h:5, from include/linux/stat.h:18, from include/linux/module.h:10, from drivers/mtd/maps/dc21285.c:8: include/linux/spinlock.h:299:102: note: expected 'struct spinlock_t *' but argument is of type 'struct raw_spinlock_t *' static inline raw_spinlock_t *spinlock_check(spinlock_t *lock) ^ drivers/mtd/maps/dc21285.c:43:25: warning: passing argument 1 of 'spin_unlock_irqrestore' from incompatible pointer type spin_unlock_irqrestore(&nw_gpio_lock, flags); ^ In file included from include/linux/seqlock.h:35:0, from include/linux/time.h:5, from include/linux/stat.h:18, from include/linux/module.h:10, from drivers/mtd/maps/dc21285.c:8: include/linux/spinlock.h:370:91: note: expected 'struct spinlock_t *' but argument is of type 'struct raw_spinlock_t *' static inline void spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags) Fixes: bd31b859 ("locking, ARM: Annotate low level hw locks as raw") Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Brian Norris authored
commit 073db4a5 upstream. On A MIPS 32-cores machine a BUG_ON was triggered because some acesses to mtd->usecount were done without taking mtd_table_mutex. kernel: Call Trace: kernel: [<ffffffff80401818>] __put_mtd_device+0x20/0x50 kernel: [<ffffffff804086f4>] blktrans_release+0x8c/0xd8 kernel: [<ffffffff802577e0>] __blkdev_put+0x1a8/0x200 kernel: [<ffffffff802579a4>] blkdev_close+0x1c/0x30 kernel: [<ffffffff8022006c>] __fput+0xac/0x250 kernel: [<ffffffff80171208>] task_work_run+0xd8/0x120 kernel: [<ffffffff8012c23c>] work_notifysig+0x10/0x18 kernel: kernel: Code: 2442ffff ac8202d8 000217fe <00020336> dc820128 10400003 00000000 0040f809 00000000 kernel: ---[ end trace 080fbb4579b47a73 ]--- Fixed by taking the mutex in blktrans_open and blktrans_release. Note that this locking is already suggested in include/linux/mtd/blktrans.h: struct mtd_blktrans_ops { ... /* Called with mtd_table_mutex held; no race with add/remove */ int (*open)(struct mtd_blktrans_dev *dev); void (*release)(struct mtd_blktrans_dev *dev); ... }; But we weren't following it. Originally reported by (and patched by) Zhang and Giuseppe, independently. Improved and rewritten. Reported-by: Zhang Xingcai <zhangxingcai@huawei.com> Reported-by: Giuseppe Cantavenera <giuseppe.cantavenera.ext@nokia.com> Tested-by: Giuseppe Cantavenera <giuseppe.cantavenera.ext@nokia.com> Acked-by: Alexander Sverdlin <alexander.sverdlin@nokia.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Grygorii Strashko authored
commit 084609bf upstream. Setting a dev_pm_ops suspend/resume pair of callbacks but not a set of hibernation callbacks means those pm functions will not be called upon hibernation - that leads to system crash on ARM during freezing if gpio-led is used in combination with CPU led trigger. It may happen after freeze_noirq stage (GPIO is suspended) and before syscore_suspend stage (CPU led trigger is suspended) - usually when disable_nonboot_cpus() is called. Log: PM: noirq freeze of devices complete after 1.425 msecs Disabling non-boot CPUs ... ^ system may crash or stuck here with message (TI AM572x) WARNING: CPU: 0 PID: 3100 at drivers/bus/omap_l3_noc.c:148 l3_interrupt_handler+0x22c/0x370() 44000000.ocp:L3 Custom Error: MASTER MPU TARGET L4_PER1_P3 (Idle): Data Access in Supervisor mode during Functional access CPU1: shutdown ^ or here Fix this by using SIMPLE_DEV_PM_OPS, which appropriately assigns the suspend and hibernation callbacks and move led_suspend/led_resume under CONFIG_PM_SLEEP to avoid build warnings. Fixes: 73e1ab41 (leds: Convert led class driver from legacy pm ops to dev_pm_ops) Signed-off-by: Grygorii Strashko <Grygorii.Strashko@linaro.org> Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Ezequiel Garcia authored
commit ea6055c4 upstream. Since commit 39a6ac11 ("spi/pl022: Devicetree support w/o platform data") the 'num-cs' parameter cannot be passed through platform data when probing with devicetree. Instead, it's a required devicetree property. Fix the binding documentation so the property is properly specified. Fixes: 39a6ac11 ("spi/pl022: Devicetree support w/o platform data") Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Stefan Wahren authored
commit a7068e39 upstream. The buffer for condtraints debug isn't big enough to hold the output in all cases. So fix this issue by increasing the buffer. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Maxime Coquelin authored
commit 921cc294 upstream. The way the mask is generated in regmap_field_init() is wrong. Indeed, a field initialized with msb = 31 and lsb = 0 provokes a shift overflow while calculating the mask field. On some 32 bits architectures, such as x86, the generated mask is 0, instead of the expected 0xffffffff. This patch uses GENMASK() to fix the problem, as this macro is already safe regarding shift overflow. [-js: in 3.12, we do not have GENMASK for general access. Define locally as RM_GENMASK.] Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Arun Chandran authored
commit 15b8d2c4 upstream. In big endian mode regmap_bulk_read gives incorrect data for byte reads. This is because memcpy of a single byte from an address after full word read gives different results when endianness differs. ie. we get little-end in LE and big-end in BE. Signed-off-by: Arun Chandran <achandran@mvista.com> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Rafael J. Wysocki authored
commit 3836785a upstream. If there is a PM QoS latency limit and all of the sufficiently shallow C-states are disabled, the cpuidle menu governor returns 0 which on some systems is CPUIDLE_DRIVER_STATE_START and shouldn't be returned if that C-state has been disabled. Fix the issue by modifying the menu governor to return (-1) in such situations. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> [shilpab: Backport to 3.10.y - adjust context - add a check if 'next_state' is less than 0 in 'cpuidle_idle_call()', this ensures that we exit 'cpuidle_idle_call()' if governor->select() returns negative value] Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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Will Deacon authored
commit 6f1a6ae8 upstream. When building the kernel with a bare-metal (ELF) toolchain, the -shared option may not be passed down to collect2, resulting in silent corruption of the vDSO image (in particular, the DYNAMIC section is omitted). The effect of this corruption is that the dynamic linker fails to find the vDSO symbols and libc is instead used for the syscalls that we intended to optimise (e.g. gettimeofday). Functionally, there is no issue as the sigreturn trampoline is still intact and located by the kernel. This patch fixes the problem by explicitly passing -shared to the linker when building the vDSO. Reported-by: Szabolcs Nagy <Szabolcs.Nagy@arm.com> Reported-by: James Greenlaigh <james.greenhalgh@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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