[PATCH AUTOSEL 5.4 4/8] HID: wacom: Add error check to wacom_parse_and_register()

From: Sasha Levin
Date: Thu Jun 15 2023 - 07:43:14 EST


From: Denis Arefev <arefev@xxxxxxxxx>

[ Upstream commit 16a9c24f24fbe4564284eb575b18cc20586b9270 ]

Added a variable check and
transition in case of an error

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Denis Arefev <arefev@xxxxxxxxx>
Reviewed-by: Ping Cheng <ping.cheng@xxxxxxxxx>
Signed-off-by: Jiri Kosina <jkosina@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/hid/wacom_sys.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index a93070f5b214c..36cb456709ed7 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -2419,8 +2419,13 @@ static int wacom_parse_and_register(struct wacom *wacom, bool wireless)
goto fail_quirks;
}

- if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
+ if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR) {
error = hid_hw_open(hdev);
+ if (error) {
+ hid_err(hdev, "hw open failed\n");
+ goto fail_quirks;
+ }
+ }

wacom_set_shared_values(wacom_wac);
devres_close_group(&hdev->dev, wacom);
--
2.39.2