[PATCH RFC 23/51] DMA-API: dma: pl08x: add dma_set_mask_and_coherent() call

Russell King
2013-08-01T21:57:37Z

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>
---
drivers/dma/amba-pl08x.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index 06fe45c..c23f876 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -1853,6 +1853,11 @@ 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) {
--
1.7.4.4