diff options
| author | Lars-Peter Clausen <lars@metafoo.de> | 2013-03-25 13:23:52 +0100 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2013-04-15 09:51:18 +0530 |
| commit | a53e28da574a40bcc9f78f5d0b0b60570182595b (patch) | |
| tree | 9b39b12b7e52518ca08a351112ba69a8229fa907 | |
| parent | a7e340657a04777077a86e235f7074e8e261ac2e (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 <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| -rw-r--r-- | drivers/dma/dmaengine.c | 9 | ||||
| -rw-r--r-- | include/linux/dmaengine.h | 11 |
2 files changed, 12 insertions, 8 deletions
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c index b2728d6ba2f..d07ef7dc04e 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; diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 91ac8da2502..dd6d21b335c 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -967,7 +967,8 @@ enum dma_status dma_sync_wait(struct dma_chan *chan, dma_cookie_t cookie); #ifdef CONFIG_DMA_ENGINE enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx); void dma_issue_pending_all(void); -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_chan *dma_request_slave_channel(struct device *dev, char *name); void dma_release_channel(struct dma_chan *chan); #else @@ -978,7 +979,7 @@ static inline enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descript static inline void dma_issue_pending_all(void) { } -static inline struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask, +static inline struct dma_chan *__dma_request_channel(const dma_cap_mask_t *mask, dma_filter_fn fn, void *fn_param) { return NULL; @@ -1005,9 +1006,9 @@ struct dma_chan *net_dma_find_channel(void); __dma_request_slave_channel_compat(&(mask), x, y, dev, name) static inline struct dma_chan -*__dma_request_slave_channel_compat(dma_cap_mask_t *mask, dma_filter_fn fn, - void *fn_param, struct device *dev, - char *name) +*__dma_request_slave_channel_compat(const dma_cap_mask_t *mask, + dma_filter_fn fn, void *fn_param, + struct device *dev, char *name) { struct dma_chan *chan; |