Commit 538bf07d authored by Ravi Babu's avatar Ravi Babu Committed by Felipe Balbi
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usb: musb: gadget: read ep0 fifo only if rxcount is non zero 



avoid reading fifo rxcount is zero of fifo is empty, hence
read fifo only if rxcount is non-zero

Signed-off-by: default avatarRavi Babu <ravibabu@ti.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 96449f09

drivers/usb/musb/musb_gadget_ep0.c

+4 −2
Original line number Diff line number Diff line
@@ -505,8 +505,10 @@ static void ep0_rxstate(struct musb *musb) 
			req->status = -EOVERFLOW;

			count = len;

		}

		if (count > 0) {

			musb_read_fifo(&musb->endpoints[0], count, buf);

			req->actual += count;

		}

		csr = MUSB_CSR0_P_SVDRXPKTRDY;

		if (count < 64 || req->actual == req->length) {

			musb->ep0_state = MUSB_EP0_STAGE_STATUSIN;

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