[media] cec: Fix runtime BUG when (CONFIG_RC_CORE && !CEC_CAP_RC)
authorLee Jones <lee.jones@linaro.org>
Tue, 4 Apr 2017 12:32:19 +0000 (09:32 -0300)
committerMauro Carvalho Chehab <mchehab@s-opensource.com>
Mon, 10 Apr 2017 16:14:53 +0000 (13:14 -0300)
commit43c0c03961d0b19bd225a336897606b46e0021a6
treed0dad178f6c3562480db174c6c97e9f1280df505
parenta93d429b51fbd5c3406bd1bc1f2bdf5f009d098b
[media] cec: Fix runtime BUG when (CONFIG_RC_CORE && !CEC_CAP_RC)

Currently when the RC Core is enabled (reachable) core code located
in cec_register_adapter() attempts to populate the RC structure with
a pointer to the 'parent' passed in by the caller.

Unfortunately if the caller did not specify RC capability when calling
cec_allocate_adapter(), then there will be no RC structure to populate.

This causes a "NULL pointer dereference" error.

Fixes: f51e80804f0 ("[media] cec: pass parent device in register(), not allocate()")

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Cc: <stable@vger.kernel.org> # for v4.10 and up
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
drivers/media/cec/cec-core.c