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