path: root/drivers/dma/dmaengine.c
diff options
authorLars-Peter Clausen <>2013-03-25 13:23:52 +0100
committerVinod Koul <>2013-04-15 09:51:18 +0530
commita53e28da574a40bcc9f78f5d0b0b60570182595b (patch)
tree9b39b12b7e52518ca08a351112ba69a8229fa907 /drivers/dma/dmaengine.c
parenta7e340657a04777077a86e235f7074e8e261ac2e (diff)
dma: Make the 'mask' parameter of __dma_request_channel const
The 'mask' parameter is not modified in __dma_request_channel and really shouldn't be. Make this explicit by making the parameter const. Signed-off-by: Lars-Peter Clausen <> Signed-off-by: Vinod Koul <>
Diffstat (limited to 'drivers/dma/dmaengine.c')
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index b2728d6ba2fd..d07ef7dc04ec 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -174,7 +174,8 @@ static struct class dma_devclass = {
#define dma_device_satisfies_mask(device, mask) \
__dma_device_satisfies_mask((device), &(mask))
static int
-__dma_device_satisfies_mask(struct dma_device *device, dma_cap_mask_t *want)
+__dma_device_satisfies_mask(struct dma_device *device,
+ const dma_cap_mask_t *want)
dma_cap_mask_t has;
@@ -463,7 +464,8 @@ static void dma_channel_rebalance(void)
-static struct dma_chan *private_candidate(dma_cap_mask_t *mask, struct dma_device *dev,
+static struct dma_chan *private_candidate(const dma_cap_mask_t *mask,
+ struct dma_device *dev,
dma_filter_fn fn, void *fn_param)
struct dma_chan *chan;
@@ -505,7 +507,8 @@ static struct dma_chan *private_candidate(dma_cap_mask_t *mask, struct dma_devic
* @fn: optional callback to disposition available channels
* @fn_param: opaque parameter to pass to dma_filter_fn
-struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask, dma_filter_fn fn, void *fn_param)
+struct dma_chan *__dma_request_channel(const dma_cap_mask_t *mask,
+ dma_filter_fn fn, void *fn_param)
struct dma_device *device, *_d;
struct dma_chan *chan = NULL;