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-rw-r--r--drivers/hid/hid-picolcd_core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hid/hid-picolcd_core.c b/drivers/hid/hid-picolcd_core.c
index b48092d..acbb0210 100644
--- a/drivers/hid/hid-picolcd_core.c
+++ b/drivers/hid/hid-picolcd_core.c
@@ -290,7 +290,7 @@ static ssize_t picolcd_operation_mode_store(struct device *dev,
buf += 10;
cnt -= 10;
}
- if (!report)
+ if (!report || report->maxfield != 1)
return -EINVAL;
while (cnt > 0 && (buf[cnt-1] == '\n' || buf[cnt-1] == '\r'))
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