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| author | Ye.Li <B37916@freescale.com> | 2015-12-04 15:17:07 +0800 |
|---|---|---|
| committer | guoyin.chen <guoyin.chen@freescale.com> | 2016-03-04 15:53:34 +0800 |
| commit | 951bc905ee9de3dcc7a1a20922b107636a36d4ca (patch) | |
| tree | bdae67b013988c6a626d2cca8fa13ee72e1b5c42 /drivers/video/ipu_common.c | |
| parent | b77819730f3d75c50896c6f3de8535ab8ed19c51 (diff) | |
| download | u-boot-imx-951bc905ee9de3dcc7a1a20922b107636a36d4ca.zip u-boot-imx-951bc905ee9de3dcc7a1a20922b107636a36d4ca.tar.gz u-boot-imx-951bc905ee9de3dcc7a1a20922b107636a36d4ca.tar.bz2 | |
MLK-11952 Video: IPU: Fix dereferencing NULL pointer problem
By Coverity check, the clk_set_rate function dereferences the clk pointer
without checking whether it is NULL. This may cause problem when clk is NULL.
Fix the problem by adding NULL check.
Signed-off-by: Ye.Li <B37916@freescale.com>
Diffstat (limited to 'drivers/video/ipu_common.c')
| -rw-r--r-- | drivers/video/ipu_common.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/video/ipu_common.c b/drivers/video/ipu_common.c index 0efb3db..83ac846 100644 --- a/drivers/video/ipu_common.c +++ b/drivers/video/ipu_common.c @@ -128,6 +128,10 @@ 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; } |