From: chao bi <chao.bi@intel.com>
Date: Wed, 12 Dec 2012 03:40:56 +0000 (+0800)
Subject: serial:ifx6x60:Delete SPI timer when shut down port
X-Git-Tag: v3.7.4~8
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9c9fc86f4ee49a91134f2946c4ced9c1499d0e7c;p=thirdparty%2Fkernel%2Fstable.git

serial:ifx6x60:Delete SPI timer when shut down port

commit 014b9b4ce84281ccb3d723c792bed19815f3571a upstream.

When shut down SPI port, it's possible that MRDY has been asserted and a SPI
timer was activated waiting for SRDY assert, in the case, it needs to delete
this timer.

Signed-off-by: Chen Jun <jun.d.chen@intel.com>
Signed-off-by: channing <chao.bi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c
index 5b9bc19ed134b..f5e9666892968 100644
--- a/drivers/tty/serial/ifx6x60.c
+++ b/drivers/tty/serial/ifx6x60.c
@@ -552,6 +552,7 @@ static void ifx_port_shutdown(struct tty_port *port)
 		container_of(port, struct ifx_spi_device, tty_port);
 
 	mrdy_set_low(ifx_dev);
+	del_timer(&ifx_dev->spi_timer);
 	clear_bit(IFX_SPI_STATE_TIMER_PENDING, &ifx_dev->flags);
 	tasklet_kill(&ifx_dev->io_work_tasklet);
 }