From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:42762 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964900AbcJ1RdQ (ORCPT ); Fri, 28 Oct 2016 13:33:16 -0400 Subject: Patch "spi: spi-fsl-dspi: Drop extra spi_master_put in device remove function" has been added to the 4.4-stable tree To: weiyj.lk@gmail.com, broonie@kernel.org, gregkh@linuxfoundation.org Cc: , From: Date: Fri, 28 Oct 2016 13:33:23 -0400 Message-ID: <1477676003220177@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: 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 know about it. >>From 6999aeabbb703a81a204cb6f9f8f151759a99ac4 Mon Sep 17 00:00:00 2001 From: Wei Yongjun 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 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 Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- 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