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linux-stable/sound/pci
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Takashi Iwai 1e94ffd074 ALSA: intel8x0: Don't update period unless prepared 
commit c1f0616124 upstream.

The interrupt handler of intel8x0 calls snd_intel8x0_update() whenever
the hardware sets the corresponding status bit for each stream.  This
works fine for most cases as long as the hardware behaves properly.
But when the hardware gives a wrong bit set, this leads to a zero-
division Oops, and reportedly, this seems what happened on a VM.

For fixing the crash, this patch adds a internal flag indicating that
the stream is ready to be updated, and check it (as well as the flag
being in suspended) to ignore such spurious update.

Cc: <stable@vger.kernel.org>
Reported-and-tested-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Link: https://lore.kernel.org/r/s5h5yzi7uh0.wl-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-26 12:06:50 +02:00
..
ac97 ALSA: Replace the word "slave" in vmaster API 2020-07-20 10:10:47 +02:00
ali5451 ALSA: ali5451: remove redundant variable capture_flag 2020-02-10 08:29:54 +01:00
asihpi Merge branch 'for-next' into for-linus 2020-10-12 08:51:00 +02:00
au88x0 ALSA: Replace with fallthrough pseudo keyword in the remaining places 2020-07-09 19:10:43 +02:00
aw2 ALSA: pci/aw2-saa7146: remove 'set but not used' warning 2020-07-07 12:05:14 +02:00
ca0106 ALSA: ca0106: fix error code handling 2020-08-25 09:27:49 +02:00
cs46xx ALSA: pci: delete repeated words in comments 2020-08-06 09:30:02 +02:00
cs5535audio ALSA: pci: Constify snd_kcontrol_new items 2020-01-03 09:24:28 +01:00
ctxfi ALSA: ctxfi: cthw20k2: fix mask on conf to allow 4 bits 2021-03-09 11:11:14 +01:00
echoaudio ALSA: echoaudio: Fix potential Oops in snd_echo_resume() 2020-08-13 11:21:05 +02:00
emu10k1 ALSA: Use fallthrough pseudo-keyword 2020-07-09 13:01:29 +02:00
hda ALSA: hda: generic: change the DAC ctl name for LO+SPK or LO+HP 2021-05-22 11:40:54 +02:00
ice1712 ALSA: pci: delete repeated words in comments 2020-08-06 09:30:02 +02:00
korg1212 ALSA: pci/korg1212: remove 'set but not used' warnings 2020-07-07 12:10:21 +02:00
lola ALSA: pci: Constify snd_device_ops definitions 2020-01-03 09:23:56 +01:00
lx6464es ALSA: lx6464es: More constifications 2020-01-05 16:15:07 +01:00
mixart ALSA: mixart: Fix mutex deadlock 2020-11-19 18:26:30 +01:00
nm256 ALSA: nm256: Replace the words blacklist 2020-07-15 14:31:56 +02:00
oxygen ALSA: pci: delete repeated words in comments 2020-08-06 09:30:02 +02:00
pcxhr ALSA: pcxhr: More constifications 2020-01-05 16:14:47 +01:00
riptide ALSA: riptide: Replace tasklet with threaded irq 2020-09-09 18:34:10 +02:00
rme9652 ALSA: rme9652: don't disable if not enabled 2021-05-19 10:12:53 +02:00
trident ALSA: pci: Constify snd_ac97_bus_ops definitions 2020-01-03 09:24:13 +01:00
vx222 ALSA: vx: More constifications 2020-01-05 16:14:30 +01:00
ymfpci ALSA: Use fallthrough pseudo-keyword 2020-07-09 13:01:29 +02:00
ad1889.c ALSA: pci: Constify snd_ac97_bus_ops definitions 2020-01-03 09:24:13 +01:00
ad1889.h
ak4531_codec.c ALSA: ak4531: More constification 2020-01-05 16:15:09 +01:00
als300.c ALSA: pci: Constify snd_ac97_bus_ops definitions 2020-01-03 09:24:13 +01:00
als4000.c ALSA: pci: Drop superfluous ioctl PCM ops 2019-12-11 07:25:31 +01:00
atiixp.c ALSA: Use fallthrough pseudo-keyword 2020-07-09 13:01:29 +02:00
atiixp_modem.c ALSA: atiixp: More constifications 2020-01-05 16:14:54 +01:00
azt3328.c ALSA: Use fallthrough pseudo-keyword 2020-07-09 13:01:29 +02:00
azt3328.h
bt87x.c ALSA: bt87x: Replace the words white/blacklist 2020-07-15 14:31:54 +02:00
cmipci.c ALSA: cmipci: More constifications 2020-01-05 16:14:55 +01:00
cs4281.c ALSA: cs4281: More constification 2020-01-05 16:15:10 +01:00
cs5530.c ALSA: pci: Constify snd_device_ops definitions 2020-01-03 09:23:56 +01:00
ens1370.c ALSA: ens137x: More constification 2020-01-05 16:15:11 +01:00
ens1371.c
es1938.c ALSA: pci/es1938: remove 'set but not used' warning 2020-07-07 12:11:59 +02:00
es1968.c ALSA: es1968: Replace the words white/blacklist 2020-07-15 14:31:55 +02:00
fm801.c ALSA: pci/fm801: fix kernel-doc 2020-07-07 12:12:21 +02:00
intel8x0.c ALSA: intel8x0: Don't update period unless prepared 2021-05-26 12:06:50 +02:00
intel8x0m.c ALSA: intel8x0: More constifications 2020-01-05 16:14:31 +01:00
Kconfig sound: Fix Kconfig indentation 2019-10-07 03:53:03 +02:00
maestro3.c ALSA: pci: Constify snd_pci_quirk tables 2020-01-03 09:24:45 +01:00
Makefile
rme32.c sound updates for 5.6-rc1 2020-01-28 16:26:57 -08:00
rme96.c sound updates for 5.6-rc1 2020-01-28 16:26:57 -08:00
sis7019.c sound updates for 5.6-rc1 2020-01-28 16:26:57 -08:00
sis7019.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 274 2019-06-05 17:30:30 +02:00
sonicvibes.c ALSA: pci: Constify snd_kcontrol_new items 2020-01-03 09:24:28 +01:00
via82xx.c ALSA: via82xx: Replace the words whitelist 2020-07-15 14:31:57 +02:00
via82xx_modem.c ALSA: pci/via82xx: remove 'set but not used' warnings 2020-07-07 12:12:38 +02:00