linux-kernel - [ 18/21] serial:ifx6x60:Delete SPI timer when shut down port

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Message-Id: <20130119010714.384278346@linuxfoundation.org>
Date:	Fri, 18 Jan 2013 17:19:36 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	alan@...rguk.ukuu.org.uk, Chen Jun <jun.d.chen@...el.com>,
	channing <chao.bi@...el.com>
Subject: [ 18/21] serial:ifx6x60:Delete SPI timer when shut down port

3.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: chao bi <chao.bi@...el.com>

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@...el.com>
Signed-off-by: channing <chao.bi@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/tty/serial/ifx6x60.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/tty/serial/ifx6x60.c
+++ b/drivers/tty/serial/ifx6x60.c
@@ -552,6 +552,7 @@ static void ifx_port_shutdown(struct tty
 		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);
 }


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