kzalloc could return NULL. Hence add a check to avoid
NULL pointer dereference.

Signed-off-by: Sachin Kamat <sachin.ka...@linaro.org>
---
 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 018a445..5d3bbcd 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];
-- 
1.7.4.1

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