FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2025-01-25 12:05:31 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

clk: hisilicon: hi3660：Fix potential NULL dereference in hi3660_stub_clk_probe()

Browse Source 
platform_get_resource() may return NULL, add proper check to
avoid potential NULL dereferencing.

This is detected by Coccinelle semantic patch.

@@
expression pdev, res, n, t, e, e1, e2;
@@

res = platform_get_resource(pdev, t, n);
+ if (!res)
+   return -EINVAL;
... when != res == NULL
e = devm_ioremap(e1, res->start, e2);

Fixes: 4f16f7ff3bc0 ("clk: hisilicon: Add support for Hi3660 stub clocks")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Wei Yongjun 2018-01-04 06:36:34 +00:00 committed by Stephen Boyd
parent 56e1ee3539
commit 9903e41ae1
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/clk/hisilicon/clk-hi3660-stub.c
View File

@ -149,6 +149,8 @@ static int hi3660_stub_clk_probe(struct platform_device *pdev)
return PTR_ERR(stub_clk_chan.mbox);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
return -EINVAL;
freq_reg = devm_ioremap(dev, res->start, resource_size(res));
if (!freq_reg)
return -ENOMEM;