[PATCH -next 2/2] soc: fsl: guts: check return value after calling of_iomap() in fsl_guts_get_soc_uid()
From: Yang Yingliang <hidden>
Date: 2022-06-28 13:53:08
Also in:
linux-arm-kernel, lkml
Subsystem:
freescale soc drivers, the rest · Maintainers:
Christophe Leroy, Linus Torvalds
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 <redacted>
Signed-off-by: Yang Yingliang <redacted>
---
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