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: firefly_0821_release~7541^2~85
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=904e718cc7b18ea8db425d51e9601fb21699892e;p=firefly-linux-kernel-4.4.55.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 5315525220fb..5d0d4f61cfb5 100644
--- a/drivers/tty/serial/ifx6x60.c
+++ b/drivers/tty/serial/ifx6x60.c
@@ -551,6 +551,7 @@ 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);
 }