On Thu, Jan 19, 2017 at 02:40:54PM -0800, Dmitry Torokhov wrote: > Usually userspace sends SND_BELL and SND_TONE events, and by the time > pwm_beeper_suspend() runs userpsace is already frozen, but theoretically > in-kernel users may send these events too, and that may cause > pwm_beeper_event() scheduling another work after we canceled it. > > Let's introduce a "suspended" flag and check it in pwm_beeper_event() to > avoid this race. > > Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> > --- > drivers/input/misc/pwm-beeper.c | 21 ++++++++++++++++++--- > 1 file changed, 18 insertions(+), 3 deletions(-) Reviewed-by: Thierry Reding <thierry.reding@xxxxxxxxx>
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