diff options
| author | Sachin Kamat <sachin.kamat@linaro.org> | 2012-09-17 15:20:23 +0530 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@linux.intel.com> | 2012-09-18 09:04:52 +0530 |
| commit | 61c6e7531d3b66b33187b8cdd700fd8ab93ffd62 (patch) | |
| tree | e65fdbc3eae97f10ba118a9e151a71655b778a44 /drivers/dma | |
| parent | 2e2c682becb20416c140aa0d6d3137b51a5c76da (diff) | |
| download | lwn-61c6e7531d3b66b33187b8cdd700fd8ab93ffd62.tar.gz lwn-61c6e7531d3b66b33187b8cdd700fd8ab93ffd62.zip | |
DMA: PL330: Check the pointer returned by kzalloc
kzalloc could return NULL. Hence add a check to avoid
NULL pointer dereference.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Jassi Brar <jassisinghbrar@gmail.com>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/pl330.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index a3b26ada8122..f5843bc80baa 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -2930,6 +2930,11 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id) num_chan = max_t(int, pi->pcfg.num_peri, pi->pcfg.num_chan); pdmac->peripherals = kzalloc(num_chan * sizeof(*pch), GFP_KERNEL); + if (!pdmac->peripherals) { + ret = -ENOMEM; + dev_err(&adev->dev, "unable to allocate pdmac->peripherals\n"); + goto probe_err5; + } for (i = 0; i < num_chan; i++) { pch = &pdmac->peripherals[i]; |