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ALSA: intel8x0: Fix breakage at ac97 clock measurement

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commit 24d1e49415be546470b20429d748e240d0518b7e upstream.

The recent workaround for the wild interrupts in commit c1f0616124c4
("ALSA: intel8x0: Don't update period unless prepared") leaded to a
regression, causing the interrupt storm during ac97 clock measurement
at the driver probe.  We need to handle the interrupt while the clock
measurement as well as the proper PCM streams.

Fixes: c1f0616124c4 ("ALSA: intel8x0: Don't update period unless prepared")
Reported-and-tested-by: Max Filippov <jcmvbkbc@gmail.com>
Tested-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/CAMo8BfKKMQkcsbOQaeEjq_FsJhdK=fn598dvh7YOcZshUSOH=g@mail.gmail.com
Link: https://lore.kernel.org/r/20210708090738.1569-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Takashi Iwai 2021-07-08 11:07:38 +02:00 • committed by Greg Kroah-Hartman
commit 23ca8cf4cb
1 changed files with 1 additions and 1 deletions
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2
sound/pci/intel8x0.c
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@ -715,7 +715,7 @@ static inline void snd_intel8x0_update(struct intel8x0 *chip, struct ichdev *ich
int status, civ, i, step;
int ack = 0;
if (!ichdev->prepared || ichdev->suspended)
if (!(ichdev->prepared || chip->in_measurement) || ichdev->suspended)
return;
spin_lock_irqsave(&chip->reg_lock, flags);