On Mon, Jan 30, 2017 at 10:22:33AM +0530, Shailendra Verma wrote:
> of_match_device could return NULL, and so can cause a NULL
> pointer dereference later.
> 
> Signed-off-by: Shailendra Verma <shailendra.v@samsung.com>
> ---
>  drivers/pwm/pwm-sun4i.c |    4 ++++
>  drivers/pwm/pwm-tegra.c |    5 +++++
>  2 files changed, 9 insertions(+)

Both of these drivers will only run on purely OF systems, so this check
is unnecessary.

Thierry