DMA-API: video: clcd: add dma_set_mask_and_coherent() call

The DMA API requires drivers to call the appropriate dma_set_mask()
functions before doing any DMA mapping.  Add this required call to
the AMBA PL08x driver.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/video/amba-clcd.c b/drivers/video/amba-clcd.c
index 0a2cce7285be..afe4702a5528 100644
--- a/drivers/video/amba-clcd.c
+++ b/drivers/video/amba-clcd.c
@@ -10,6 +10,7 @@
  *
  *  ARM PrimeCell PL110 Color LCD Controller
  */
+#include <linux/dma-mapping.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
@@ -551,6 +552,10 @@ static int clcdfb_probe(struct amba_device *dev, const struct amba_id *id)
         if (!board)
                 return -EINVAL;
 
+        ret = dma_set_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
+        if (ret)
+                goto out;
+
         ret = amba_request_regions(dev, NULL);
         if (ret) {
                 printk(KERN_ERR "CLCD: unable to reserve regs region\n");