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| author | M'boumba Cedric Madianga <cedric.madianga@gmail.com> | 2015-12-07 12:00:28 +0100 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2015-12-10 05:15:22 +0100 |
| commit | aea08a5dfadf387153cdbbff89f775b0e19d32e4 (patch) | |
| tree | e131357f4158ae6de8a7ce51b06983ca80c48dc1 /lib/bitmap.c | |
| parent | ARM: configs: Add STM32 DMA support in STM32 defconfig (diff) | |
| download | linux-aea08a5dfadf387153cdbbff89f775b0e19d32e4.tar.xz linux-aea08a5dfadf387153cdbbff89f775b0e19d32e4.zip | |
dmaengine: stm32-dma: Fix unchecked deference of chan->desc
'commit d8b468394fb7 ("dmaengine: Add STM32 DMA driver")' leads to the
following Smatch complaint:
drivers/dma/stm32-dma.c:562 stm32_dma_issue_pending()
error: we previously assumed 'chan->desc' could be null (see line 560)
So, this patch fixes the unchecked dereference of chan->desc by returning
operation not permitted error when stm32_dma_start_transfer() does not
succeed to allocate a virtual channel descriptor.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'lib/bitmap.c')
0 files changed, 0 insertions, 0 deletions