[PATCH 09/10] wifi: rtw88: fix incorrect error codes in rtw_debugfs_set_coex_enable

From: Zhang Shurong
Date: Sat Apr 22 2023 - 06:07:16 EST


If there is a failure during copy_from_user, rtw_debugfs_set_coex_enable
should return negative error code instead of a positive value count.

Fix this bug by returning correct error code.

Signed-off-by: Zhang Shurong <zhang_shurong@xxxxxxxxxxx>
---
drivers/net/wireless/realtek/rtw88/debug.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/realtek/rtw88/debug.c b/drivers/net/wireless/realtek/rtw88/debug.c
index aef43f3ca364..f9bcb44b42ac 100644
--- a/drivers/net/wireless/realtek/rtw88/debug.c
+++ b/drivers/net/wireless/realtek/rtw88/debug.c
@@ -883,7 +883,9 @@ static ssize_t rtw_debugfs_set_coex_enable(struct file *filp,
bool enable;
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;

ret = kstrtobool(tmp, &enable);
if (ret) {
--
2.40.0