If there is a failure during copy_from_user, rtw_debugfs_set_single_input
should return negative error code instead of a positive value count.
Fix this bug by returning correct error code.
Signed-off-by: Zhang Shurong <[email protected]>
---
drivers/net/wireless/realtek/rtw88/debug.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/realtek/rtw88/debug.c b/drivers/net/wireless/realtek/rtw88/debug.c
index d8e872ae4dda..f721205185cf 100644
--- a/drivers/net/wireless/realtek/rtw88/debug.c
+++ b/drivers/net/wireless/realtek/rtw88/debug.c
@@ -320,8 +320,11 @@ static ssize_t rtw_debugfs_set_single_input(struct file *filp,
char tmp[32 + 1];
u32 input;
int num;
+ int ret;
- rtw_debugfs_copy_from_user(tmp, sizeof(tmp), buffer, count, 1);
+ ret = rtw_debugfs_copy_from_user(tmp, sizeof(tmp), buffer, count, 1);
+ if (ret < 0)
+ return ret;
num = kstrtoint(tmp, 0, &input);
--
2.40.0