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| /openbmc/linux/drivers/clk/imx/ |
| H A D | clk-imx8qxp-lpcg.c | diff 48504619a65977fb2a4c7182eab637867f1e6548 Tue Dec 18 00:43:09 CST 2018 Wei Yongjun <weiyongjun1@huawei.com> clk: imx: fix potential NULL dereference in imx8qxp_lpcg_clk_probe()
platform_get_resource() may fail and return NULL, so we should
better check it's return value to avoid a NULL pointer dereference
a bit later in the code.
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: 1e3121bfe51a ("clk: imx: add imx8qxp lpcg driver")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
|