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: 38b19ed7f81ec ("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>
1 file changed
