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Commit af63429c authored by Felipe Balbi's avatar Felipe Balbi
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usb: musb: cppi41: exit early when tx fifo is empty 



as soon as we find out tx fifo is empty, there's
no need to break out of the loop just to have another
branch to complete the transfer. We can just complete
transfer and exit early.

Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 1b61625f

drivers/usb/musb/musb_cppi41.c

+4 −8
Original line number Diff line number Diff line
@@ -280,19 +280,15 @@ static void cppi41_dma_callback(void *private_data) 


		do {

			empty = musb_is_tx_fifo_empty(hw_ep);

			if (empty)

				break;

			if (empty) {

				cppi41_trans_done(cppi41_channel);

				goto out;

			}

			wait--;

			if (!wait)

				break;

			udelay(1);

		} while (1);



		empty = musb_is_tx_fifo_empty(hw_ep);

		if (empty) {

			cppi41_trans_done(cppi41_channel);

			goto out;

		}

	}

	list_add_tail(&cppi41_channel->tx_check,

			&controller->early_tx_list);