From: Uwe Kleine-König Date: Tue, 22 Nov 2011 13:22:56 +0000 (+0100) Subject: serial/mxs-auart: only wake up tty layer once X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d0758a285caaf86192cdb22136a5eb84ed72f276;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git 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: Uwe Kleine-König Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c index 7e02c9c344fe..076169f50b01 100644 --- a/drivers/tty/serial/mxs-auart.c +++ b/drivers/tty/serial/mxs-auart.c @@ -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);