Fix possible NULL pointer dereference in mt76u_mcu_deinit routine that
can occur if initialization path fails before calling mt76u_mcu_init_rx
Fixes: ee676cd5017c ("mt76: add driver code for MT76x2u based devices")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@xxxxxxxxxx>
---
drivers/net/wireless/mediatek/mt76/usb_mcu.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/usb_mcu.c b/drivers/net/wireless/mediatek/mt76/usb_mcu.c
index 036be4163e69..9527e1216f3d 100644
--- a/drivers/net/wireless/mediatek/mt76/usb_mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/usb_mcu.c
@@ -48,9 +48,11 @@ EXPORT_SYMBOL_GPL(mt76u_mcu_init_rx);
void mt76u_mcu_deinit(struct mt76_dev *dev)
{
- struct mt76_usb *usb = &dev->usb;
+ struct mt76u_buf *buf = &dev->usb.mcu.res;
- usb_kill_urb(usb->mcu.res.urb);
- mt76u_buf_free(&usb->mcu.res);
+ if (buf->urb) {
+ usb_kill_urb(buf->urb);
+ mt76u_buf_free(buf);
+ }
}
EXPORT_SYMBOL_GPL(mt76u_mcu_deinit);
--
2.20.1
