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 <stable@xxxxxxxxxxxxxxx> know about it. >From 93c77d2999b09f2084b033ea6489915e0104ad9c Mon Sep 17 00:00:00 2001 From: Brent Taylor <motobud@xxxxxxxxx> 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 <motobud@xxxxxxxxx> 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 <motobud@xxxxxxxxx> Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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@xxxxxxxxx are queue-4.5/mmc-atmel-mci-check-pdata-for-null-before-dereferencing-it-at-dma-config.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html