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-rw-r--r--drivers/of/device.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/of/device.c b/drivers/of/device.c
index 28c38c756f92..9af44f6dc17b 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -274,6 +274,8 @@ ssize_t of_device_modalias(struct device *dev, char *str, ssize_t len)
ssize_t sl = of_device_get_modalias(dev, str, len - 2);
if (sl < 0)
return sl;
+ if (sl > len - 2)
+ return -ENOMEM;
str[sl++] = '\n';
str[sl] = 0;