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ALSA: line6: hwdep: add support for O_NONBLOCK opening mode
authorVasily Khoruzhick <anarsoul@gmail.com>
Sat, 2 May 2020 19:31:19 +0000 (12:31 -0700)
committerTakashi Iwai <tiwai@suse.de>
Sat, 2 May 2020 20:31:03 +0000 (22:31 +0200)
commit5c2d0de544c39407bf286d33bdcc1fb06a892d8b
tree98ba931efb431902adb526d13520af14c5bb7932tree | snapshot
parent7f0d5053c5a9d23fe5c2d337495a9d79038d267bcommit | diff
ALSA: line6: hwdep: add support for O_NONBLOCK opening mode

Currently line6 hwdep interface ignores O_NONBLOCK flag when
opening device and it renders it somewhat useless when using poll.

Check for O_NONBLOCK flag when opening device and don't block read()
if it is set.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Link: https://lore.kernel.org/r/20200502193120.79115-2-anarsoul@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/usb/line6/driver.c diff | blob | history
sound/usb/line6/driver.h diff | blob | history
Domain: System / Kernel;