[RFC v02 01/15] dmaengine: core: Allow NULL mask pointer in __dma_device_satisfies_mask()

Peter Ujfalusi
2015-11-30T13:45:31Z

Treat as true condition the case when the mask is NULL.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/dma/dmaengine.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index daf54a39bcc7..52c3eee48e2e 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -184,6 +184,9 @@ __dma_device_satisfies_mask(struct dma_device *device,
{
dma_cap_mask_t has;

+ if (!want)
+ return true;
+
bitmap_and(has.bits, want->bits, device->cap_mask.bits,
DMA_TX_TYPE_END);
return bitmap_equal(want->bits, has.bits, DMA_TX_TYPE_END);
--
2.6.3