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Jeeja KP 960013762d ALSA: hda: Fix cpu lockup when stopping the cmd dmas 
Using jiffies in hdac_wait_for_cmd_dmas() to determine when to time out
when interrupts are off (snd_hdac_bus_stop_cmd_io()/spin_lock_irq())
causes hard lockup so unlock while waiting using jiffies.

---<-snip->---
<0>[ 1211.603046] NMI watchdog: Watchdog detected hard LOCKUP on cpu 3
<4>[ 1211.603047] Modules linked in: snd_hda_intel i915 vgem
<4>[ 1211.603053] irq event stamp: 13366
<4>[ 1211.603053] hardirqs last  enabled at (13365):
...
<4>[ 1211.603059] Call Trace:
<4>[ 1211.603059]  ? delay_tsc+0x3d/0xc0
<4>[ 1211.603059]  __delay+0xa/0x10
<4>[ 1211.603060]  __const_udelay+0x31/0x40
<4>[ 1211.603060]  snd_hdac_bus_stop_cmd_io+0x96/0xe0 [snd_hda_core]
<4>[ 1211.603060]  ? azx_dev_disconnect+0x20/0x20 [snd_hda_intel]
<4>[ 1211.603061]  snd_hdac_bus_stop_chip+0xb1/0x100 [snd_hda_core]
<4>[ 1211.603061]  azx_stop_chip+0x9/0x10 [snd_hda_codec]
<4>[ 1211.603061]  azx_suspend+0x72/0x220 [snd_hda_intel]
<4>[ 1211.603061]  pci_pm_suspend+0x71/0x140
<4>[ 1211.603062]  dpm_run_callback+0x6f/0x330
<4>[ 1211.603062]  ? pci_pm_freeze+0xe0/0xe0
<4>[ 1211.603062]  __device_suspend+0xf9/0x370
<4>[ 1211.603062]  ? dpm_watchdog_set+0x60/0x60
<4>[ 1211.603063]  async_suspend+0x1a/0x90
<4>[ 1211.603063]  async_run_entry_fn+0x34/0x160
<4>[ 1211.603063]  process_one_work+0x1f4/0x6d0
<4>[ 1211.603063]  ? process_one_work+0x16e/0x6d0
<4>[ 1211.603064]  worker_thread+0x49/0x4a0
<4>[ 1211.603064]  kthread+0x107/0x140
<4>[ 1211.603064]  ? process_one_work+0x6d0/0x6d0
<4>[ 1211.603065]  ? kthread_create_on_node+0x40/0x40
<4>[ 1211.603065]  ret_from_fork+0x2e/0x40

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100419
Fixes: 38b19ed7f8 ("ALSA: hda: fix to wait for RIRB & CORB DMA to set")
Reported-by: Marta Lofstedt <marta.lofstedt@intel.com>
Suggested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
CC: stable <stable@vger.kernel.org> # 4.7
Signed-off-by: Takashi Iwai <tiwai@suse.de>
 		2017-05-10 08:47:17 +02:00
..
ext ALSA: hda - add more ML register definitions 2017-04-07 10:39:18 +02:00
Kconfig ALSA: HDAC: move SND_HDA_PREALLOC_SIZE to core 2015-06-16 17:40:38 +02:00
Makefile ALSA: hda - Add hdmi chmap verb programming ops to chmap object 2016-03-07 15:41:31 +01:00
array.c ALSA: hda: Fix krealloc() with __GFP_ZERO usage 2016-08-03 15:17:22 +02:00
hda_bus_type.c ALSA: hda - Advertise MODALIAS in uevent 2015-10-20 10:15:53 +02:00
hdac_bus.c ALSA: hda - Add / fix kernel doc comments 2015-10-28 12:37:29 +01:00
hdac_controller.c ALSA: hda: Fix cpu lockup when stopping the cmd dmas 2017-05-10 08:47:17 +02:00
hdac_device.c ALSA: hda - Fix possible race on regmap bypass flip 2016-04-21 17:59:17 +02:00
hdac_i915.c drm/i915/dp: DP audio API changes for MST 2016-09-22 09:01:55 -07:00
hdac_regmap.c ALSA: hdac_regmap - fix the register access for runtime PM 2016-06-17 14:01:06 +02:00
hdac_stream.c ALSA: hda - Avoid tricky macros 2017-04-03 08:42:43 +02:00
hdac_sysfs.c ALSA: hda - Add hdaudio bus modalias support 2015-10-20 10:15:09 +02:00
hdmi_chmap.c ALSA: hda: fix some klockwork scan warnings 2016-06-16 10:10:12 +02:00
local.h ALSA: hda - add helper to get channels from cap bits 2016-04-28 18:45:26 +01:00
trace.c ALSA: hda - Re-add tracepoints to HD-audio core driver 2015-03-23 13:17:58 +01:00
trace.h ALSA: hda - add hdac stream trace 2015-05-18 10:06:20 +02:00