[media] rc: Set rdev before irq setup

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This fixes a problem in fintek-cir and nuvoton-cir where the
irq handler would trigger during module load before the rdev member was
set, causing a NULL pointer crash.
It seems this crash is very reproducible (just bombard the receiver with
IR signals during module load), probably because when request_irq is
called, any pending intterupt is handled immediately, before
request_irq returns and rdev can be set.
This same crash was supposed to be fixed by commit
9ef449c6b3 ("[media] rc: Postpone ISR
registration"), but the crash was still observed on the nuvoton-cir
driver.
This commit was tested on nuvoton-cir only.

Cc: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Matthijs Kooijman <matthijs@stdin.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

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This commit is contained in:

Matthijs Kooijman 2012-11-02 09:13:55 -03:00 • committed by Mauro Carvalho Chehab

parent 70ef69915b

commit d62b681847

2 changed files with 5 additions and 2 deletions

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4

drivers/media/rc/fintek-cir.c

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3

drivers/media/rc/nuvoton-cir.c

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