If there is a failure during copy_from_user, rtw_debugfs_set_rsvd_page
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 3c3350bb2855..d8e872ae4dda 100644
--- a/drivers/net/wireless/realtek/rtw88/debug.c
+++ b/drivers/net/wireless/realtek/rtw88/debug.c
@@ -291,8 +291,11 @@ static ssize_t rtw_debugfs_set_rsvd_page(struct file *filp,
char tmp[32 + 1];
u32 offset, page_num;
int num;
+ int ret;
- rtw_debugfs_copy_from_user(tmp, sizeof(tmp), buffer, count, 2);
+ ret = rtw_debugfs_copy_from_user(tmp, sizeof(tmp), buffer, count, 2);
+ if (ret < 0)
+ return ret;
num = sscanf(tmp, "%d %d", &offset, &page_num);
--
2.40.0