DMA-API: dma: pl08x: 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.

Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index fce46c5..e51a983 100644 (file)
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -2055,6 +2055,11 @@ static int pl08x_probe(struct amba_device *adev, const struct amba_id *id)
        if (ret)
                return ret;
 
+       /* Ensure that we can do DMA */
+       ret = dma_set_mask_and_coherent(&adev->dev, DMA_BIT_MASK(32));
+       if (ret)
+               goto out_no_pl08x;
+
        /* Create the driver state holder */
        pl08x = kzalloc(sizeof(*pl08x), GFP_KERNEL);
        if (!pl08x) {