This is a note to let you know that I've just added the patch titled
dmaengine: stm32-dma: Set correct args number for DMA request from DT
to the 4.9-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:
dmaengine-stm32-dma-set-correct-args-number-for-dma-request-from-dt.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Wed Dec 6 17:39:55 CET 2017
From: M'boumba Cedric Madianga <cedric.madianga@xxxxxxxxx>
Date: Tue, 13 Dec 2016 14:40:43 +0100
Subject: dmaengine: stm32-dma: Set correct args number for DMA request from DT
From: M'boumba Cedric Madianga <cedric.madianga@xxxxxxxxx>
[ Upstream commit 7e96304d99477de1f70db42035071e56439da817 ]
This patch sets the right number of arguments to be used for DMA clients
which request channels from DT.
Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@xxxxxxxxx>
Reviewed-by: Ludovic BARRE <ludovic.barre@xxxxxx>
Signed-off-by: Vinod Koul <vinod.koul@xxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/dma/stm32-dma.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
--- a/drivers/dma/stm32-dma.c
+++ b/drivers/dma/stm32-dma.c
@@ -976,21 +976,18 @@ static struct dma_chan *stm32_dma_of_xla
struct stm32_dma_chan *chan;
struct dma_chan *c;
- if (dma_spec->args_count < 3)
+ if (dma_spec->args_count < 4)
return NULL;
cfg.channel_id = dma_spec->args[0];
cfg.request_line = dma_spec->args[1];
cfg.stream_config = dma_spec->args[2];
- cfg.threshold = 0;
+ cfg.threshold = dma_spec->args[3];
if ((cfg.channel_id >= STM32_DMA_MAX_CHANNELS) || (cfg.request_line >=
STM32_DMA_MAX_REQUEST_ID))
return NULL;
- if (dma_spec->args_count > 3)
- cfg.threshold = dma_spec->args[3];
-
chan = &dmadev->chan[cfg.channel_id];
c = dma_get_slave_channel(&chan->vchan.chan);
Patches currently in stable-queue which might be from cedric.madianga@xxxxxxxxx are
queue-4.9/dmaengine-stm32-dma-fix-null-pointer-dereference-in-stm32_dma_tx_status.patch
queue-4.9/dmaengine-stm32-dma-set-correct-args-number-for-dma-request-from-dt.patch