Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit d0758a28 authored by Uwe Kleine-König's avatar Uwe Kleine-König Committed by Greg Kroah-Hartman
Browse files

serial/mxs-auart: only wake up tty layer once 



There is no need to call uart_write_wakeup after each character send.
Once at the end of the write sequence is enough.

Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent f227824e

drivers/tty/serial/mxs-auart.c

+3 −2
Original line number Diff line number Diff line
@@ -145,11 +145,12 @@ static inline void mxs_auart_tx_chars(struct mxs_auart_port *s) 
			writel(xmit->buf[xmit->tail],

				     s->port.membase + AUART_DATA);

			xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);

			if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)

				uart_write_wakeup(&s->port);

		} else

			break;

	}

	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)

		uart_write_wakeup(&s->port);



	if (uart_circ_empty(&(s->port.state->xmit)))

		writel(AUART_INTR_TXIEN,

			     s->port.membase + AUART_INTR_CLR);