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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 15:35:50 +0800 |
| commit | 541b2a66174c2f6aafb33c61f56f6dadded02d71 (patch) | |
| tree | bdae67b013988c6a626d2cca8fa13ee72e1b5c42 | |
| parent | 7e7cbcb80a20da1e744091a69e52db1b935750a2 (diff) | |
| download | u-boot-imx-541b2a66174c2f6aafb33c61f56f6dadded02d71.zip u-boot-imx-541b2a66174c2f6aafb33c61f56f6dadded02d71.tar.gz u-boot-imx-541b2a66174c2f6aafb33c61f56f6dadded02d71.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>
| -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; } |