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Commit 7942f857 authored by Dirk Behme's avatar Dirk Behme Committed by Greg Kroah-Hartman
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serial: imx: TX DMA: clean up sg initialization 



Inverting the logic of the if statement for the sg initialization
makes the if statement easier and better to read.

No functional change.

Signed-off-by: default avatarDirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 55c3cb13

drivers/tty/serial/imx.c

+4 −4
Original line number Diff line number Diff line
@@ -539,15 +539,15 @@ static void imx_dma_tx(struct imx_port *sport) 


	sport->tx_bytes = uart_circ_chars_pending(xmit);



	if (xmit->tail > xmit->head && xmit->head > 0) {

	if (xmit->tail < xmit->head) {

		sport->dma_tx_nents = 1;

		sg_init_one(sgl, xmit->buf + xmit->tail, sport->tx_bytes);

	} else {

		sport->dma_tx_nents = 2;

		sg_init_table(sgl, 2);

		sg_set_buf(sgl, xmit->buf + xmit->tail,

				UART_XMIT_SIZE - xmit->tail);

		sg_set_buf(sgl + 1, xmit->buf, xmit->head);

	} else {

		sport->dma_tx_nents = 1;

		sg_init_one(sgl, xmit->buf + xmit->tail, sport->tx_bytes);

	}



	ret = dma_map_sg(dev, sgl, sport->dma_tx_nents, DMA_TO_DEVICE);