[U-Boot] [PATCH 1/2] video: ipu: Fix dereferencing NULL pointer problem

The clk_set_rate function dereferences the clk pointer without checking whether it is NULL. This may cause problem when clk is NULL.

Signed-off-by: Peng Fan peng.fan@nxp.com --- drivers/video/ipu_common.c | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/drivers/video/ipu_common.c b/drivers/video/ipu_common.c index 96229da502..b3b09e6982 100644 --- a/drivers/video/ipu_common.c +++ b/drivers/video/ipu_common.c @@ -134,6 +134,10 @@ int clk_set_rate(struct clk *clk, unsigned long rate) { if (clk && clk->set_rate) clk->set_rate(clk, rate); + + if (!clk) + return 0; + return clk->rate; }