The function performs a check on the hdev input parameters, however, it
is used before the check.
Initialize the udev variable after the sanity check to avoid a
possible NULL pointer dereference.
Fixes: 9614219e9310e ("HID: uclogic: Extract tablet parameter discovery into a module")
Addresses-Coverity-ID: 1443763 ("Null pointer dereference")
Signed-off-by: José Expósito <jose.exposito89@xxxxxxxxx>
---
drivers/hid/hid-uclogic-params.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/hid-uclogic-params.c b/drivers/hid/hid-uclogic-params.c
index 4136837e4d15..3e70f969fb84 100644
--- a/drivers/hid/hid-uclogic-params.c
+++ b/drivers/hid/hid-uclogic-params.c
@@ -452,7 +452,7 @@ static int uclogic_params_frame_init_v1_buttonpad(
{
int rc;
bool found = false;
- struct usb_device *usb_dev = hid_to_usb_dev(hdev);
+ struct usb_device *usb_dev;
char *str_buf = NULL;
const size_t str_len = 16;
@@ -462,6 +462,8 @@ static int uclogic_params_frame_init_v1_buttonpad(
goto cleanup;
}
+ usb_dev = hid_to_usb_dev(hdev);
+
/*
* Enable generic button mode
*/
--
2.25.1
