staging: vc04_services: bcm2835-v4l2-isp: Explicitly set DMA mask

The platform model originally handled the DMA mask. Now that
we are on the vchiq_bus we need to explicitly set this.

Signed-off-by: Kieran Bingham <[email protected]>

Author: kbingham

drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c

@@ -1775,6 +1775,13 @@ static int bcm2835_isp_probe(struct vchiq_device *device)
 	unsigned int i;
 	int ret;
 
+	ret = dma_set_mask_and_coherent(&device->dev, DMA_BIT_MASK(32));
+	if (ret) {
+		dev_err(&device->dev, "dma_set_mask_and_coherent failed: %d\n",
+			ret);
+		return ret;
+	}
+
 	bcm2835_isp_instances = devm_kzalloc(&device->dev,
 					     sizeof(bcm2835_isp_instances) *
 						      BCM2835_ISP_NUM_INSTANCES,