Messages in this thread Patch in this message | | | From | Yang Yingliang <> | Subject | [PATCH -next 2/2] soc: fsl: guts: check return value after calling of_iomap() in fsl_guts_get_soc_uid() | Date | Tue, 28 Jun 2022 22:02:49 +0800 |
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of_iomap() may return NULL, so we need check the return value.
Fixes: 786dde1e59d7 ("soc: fsl: guts: add serial_number support") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- drivers/soc/fsl/guts.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/soc/fsl/guts.c b/drivers/soc/fsl/guts.c index 8038c599ad83..6bf3e6a980ff 100644 --- a/drivers/soc/fsl/guts.c +++ b/drivers/soc/fsl/guts.c @@ -126,6 +126,10 @@ static u64 fsl_guts_get_soc_uid(const char *compat, unsigned int offset) return 0; sfp_base = of_iomap(np, 0); + if (!sfp_base) { + of_node_put(np); + return 0; + } uid = ioread32(sfp_base + offset); uid <<= 32; -- 2.25.1
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