[ALSA] usb-audio: properly lock hwptr_done accesses

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USB generic driver
Take the substream lock when reading hwptr_done to avoid a race
condition with the updates in the URB callbacks.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>

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Clemens Ladisch 2005-08-15 08:25:50 +02:00 • committed by Jaroslav Kysela

parent 9624ea812c

commit daa150ef7d

1 changed files with 8 additions and 2 deletions

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sound/usb/usbaudio.c

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