From: Geert Uytterhoeven <geert+renesas@glider.be>
Date: Fri, 18 Sep 2015 11:08:27 +0000 (+0200)
Subject: serial: sh-sci: Stop calling sci_start_rx() from sci_request_dma()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0e5c4b4d154ee0a34e39e1a587f71d4671783abf;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

serial: sh-sci: Stop calling sci_start_rx() from sci_request_dma()

There's no need to call sci_start_rx() from sci_request_dma() when DMA
setup fails, as sci_startup() will call sci_start_rx() anyway.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 02aaf4d213d9..ac9ce8f1ff79 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1386,7 +1386,6 @@ static void sci_request_dma(struct uart_port *port)
 				 "Failed to allocate Rx dma buffer, using PIO\n");
 			dma_release_channel(chan);
 			s->chan_rx = NULL;
-			sci_start_rx(port);
 			return;
 		}