Patch "spi: spi-fsl-dspi: Drop extra spi_master_put in device remove function" has been added to the 4.4-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    spi: spi-fsl-dspi: Drop extra spi_master_put in device remove function

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     spi-spi-fsl-dspi-drop-extra-spi_master_put-in-device-remove-function.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 6999aeabbb703a81a204cb6f9f8f151759a99ac4 Mon Sep 17 00:00:00 2001
From: Wei Yongjun <weiyj.lk@gmail.com>
Date: Sat, 20 Aug 2016 15:25:32 +0000
Subject: spi: spi-fsl-dspi: Drop extra spi_master_put in device remove function

From: Wei Yongjun <weiyj.lk@gmail.com>

commit 6999aeabbb703a81a204cb6f9f8f151759a99ac4 upstream.

The call sequence spi_alloc_master/spi_register_master/spi_unregister_master
is complete; it reduces the device reference count to zero, which and results
in device memory being freed. The subsequent call to spi_master_put is
unnecessary and results in an access to free memory. Drop it.

Fixes: 9298bc727385 ("spi: spi-fsl-dspi: Remove spi-bitbang")
Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/spi/spi-fsl-dspi.c |    1 -
 1 file changed, 1 deletion(-)

--- a/drivers/spi/spi-fsl-dspi.c
+++ b/drivers/spi/spi-fsl-dspi.c
@@ -753,7 +753,6 @@ static int dspi_remove(struct platform_d
 	/* Disconnect from the SPI framework */
 	clk_disable_unprepare(dspi->clk);
 	spi_unregister_master(dspi->master);
-	spi_master_put(dspi->master);
 
 	return 0;
 }


Patches currently in stable-queue which might be from weiyj.lk@gmail.com are

queue-4.4/spi-spi-fsl-dspi-drop-extra-spi_master_put-in-device-remove-function.patch