[PATCH 5.9 016/255] usb: gadget: fsl: fix null pointer checking

From: Greg Kroah-Hartman
Date: Tue Nov 17 2020 - 08:30:50 EST


From: Ran Wang <ran.wang_1@xxxxxxx>

[ Upstream commit 48e7bbbbb261b007fe78aa14ae62df01d236497e ]

fsl_ep_fifo_status() should return error if _ep->desc is null.

Fixes: 75eaa498c99e (“usb: gadget: Correct NULL pointer checking in fsl gadget”)
Reviewed-by: Peter Chen <peter.chen@xxxxxxx>
Signed-off-by: Ran Wang <ran.wang_1@xxxxxxx>
Signed-off-by: Felipe Balbi <balbi@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/usb/gadget/udc/fsl_udc_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/udc/fsl_udc_core.c b/drivers/usb/gadget/udc/fsl_udc_core.c
index a6f7b2594c090..c0cb007b749ff 100644
--- a/drivers/usb/gadget/udc/fsl_udc_core.c
+++ b/drivers/usb/gadget/udc/fsl_udc_core.c
@@ -1051,7 +1051,7 @@ static int fsl_ep_fifo_status(struct usb_ep *_ep)
u32 bitmask;
struct ep_queue_head *qh;

- if (!_ep || _ep->desc || !(_ep->desc->bEndpointAddress&0xF))
+ if (!_ep || !_ep->desc || !(_ep->desc->bEndpointAddress&0xF))
return -ENODEV;

ep = container_of(_ep, struct fsl_ep, ep);
--
2.27.0