aacraid: prevent invalid pointer dereference

[~andy/linux] / drivers / dma / pl330.c

diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index a562d24d20bf55179436d16086ca90f63d1b1894..df8b10fd1726ed466d2b05e814a8feb6c711dfe3 100644 (file)
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2903,6 +2903,10 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
 
        pdat = dev_get_platdata(&adev->dev);
 
+       ret = dma_set_mask_and_coherent(&adev->dev, DMA_BIT_MASK(32));
+       if (ret)
+               return ret;
+
        /* Allocate a new DMAC and its Channels */
        pdmac = devm_kzalloc(&adev->dev, sizeof(*pdmac), GFP_KERNEL);
        if (!pdmac) {