Searched hist:c744b63b6c422776293cc526ef7887623926f33e (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/drivers/clk/hisilicon/ |
| H A D | clk.c | diff c744b63b6c422776293cc526ef7887623926f33e Tue Mar 20 09:19:34 CDT 2018 Wei Yongjun <weiyongjun1@huawei.com> clk: hisilicon: fix potential NULL dereference in hisi_clk_alloc()
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);
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Fixes: 322269163a36 ("clk: hisilicon: add hisi_clk_alloc function.")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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