RE: [PATCH] PM / devfreq: Fix potential NULL pointer dereference in governor_store

[MyungJoo Ham]

> df->governor is being dereferenced before it is null checked,
> hence there is a potential null pointer dereference.
> 
> Notice that df->governor is being null checked at line 1004:
> if (df->governor) {, which implies it might be null.
> 
> Fix this by null checking df->governor before dereferencing it.
> 
> Addresses-Coverity-ID: 1401988 ("Dereference before null check")
> Fixes: bcf23c79c4e4 ("PM / devfreq: Fix available_governor sysfs")
> Signed-off-by: Gustavo A. R. Silva <garsilva@xxxxxxxxxxxxxx>

Acked-by: MyungJoo Ham <myungjoo.ham@xxxxxxxxxxx>


Cheers,
MyungJoo

> ---
>  drivers/devfreq/devfreq.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
> index 78fb496..14fe76b 100644