From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:48502 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755648AbcDJRLH (ORCPT ); Sun, 10 Apr 2016 13:11:07 -0400 Subject: Patch "mmc: atmel-mci: Check pdata for NULL before dereferencing it at DMA config" has been added to the 4.5-stable tree To: motobud@gmail.com, gregkh@linuxfoundation.org, ulf.hansson@linaro.org Cc: , From: Date: Sun, 10 Apr 2016 10:11:06 -0700 Message-ID: <1460308266107220@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 mmc: atmel-mci: Check pdata for NULL before dereferencing it at DMA config to the 4.5-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: mmc-atmel-mci-check-pdata-for-null-before-dereferencing-it-at-dma-config.patch and it can be found in the queue-4.5 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 93c77d2999b09f2084b033ea6489915e0104ad9c Mon Sep 17 00:00:00 2001 From: Brent Taylor Date: Sun, 13 Mar 2016 00:25:31 -0600 Subject: mmc: atmel-mci: Check pdata for NULL before dereferencing it at DMA config From: Brent Taylor commit 93c77d2999b09f2084b033ea6489915e0104ad9c upstream. Using an at91sam9g20ek development board with DTS configuration may trigger a kernel panic because of a NULL pointer dereference exception, while configuring DMA. Let's fix this by adding a check for pdata before dereferencing it. Signed-off-by: Brent Taylor Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman --- drivers/mmc/host/atmel-mci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -2443,7 +2443,7 @@ static int atmci_configure_dma(struct at struct mci_platform_data *pdata = host->pdev->dev.platform_data; dma_cap_mask_t mask; - if (!pdata->dma_filter) + if (!pdata || !pdata->dma_filter) return -ENODEV; dma_cap_zero(mask); Patches currently in stable-queue which might be from motobud@gmail.com are queue-4.5/mmc-atmel-mci-check-pdata-for-null-before-dereferencing-it-at-dma-config.patch