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dmaengine: Add dma_get_slave_caps() inline stub when !CONFIG_DMA_ENGINE 

Commit 0d5484b1c3 ("dmaengine: Move dma_get_slave_caps()
implementation to dmaengine.c") turned the inline dma_get_slave_caps()
function into an external function without adding an inline stub for the
cases where CONFIG_DMA_ENGINE isn't set. This breaks compilation of
drivers using the DMA engine API when CONFIG_DMA_ENGINE isn't set.

Add an inline stub to fix compilation.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Fixes: 0d5484b1c3 ("dmaengine: Move dma_get_slave_caps() implementation to dmaengine.c")
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Laurent Pinchart 2015-01-19 13:54:27 +02:00 committed by Vinod Koul
parent 4d76bbed2d
commit fdb8df9933
1 changed files with 6 additions and 2 deletions
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8
include/linux/dmaengine.h
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@ -758,8 +758,6 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_sg(
src_sg, src_nents, flags);
}
int dma_get_slave_caps(struct dma_chan *chan, struct dma_slave_caps *caps);
static inline int dmaengine_terminate_all(struct dma_chan *chan)
{
if (chan->device->device_terminate_all)
@ -1048,6 +1046,7 @@ struct dma_chan *dma_request_slave_channel_reason(struct device *dev,
const char *name);
struct dma_chan *dma_request_slave_channel(struct device *dev, const char *name);
void dma_release_channel(struct dma_chan *chan);
int dma_get_slave_caps(struct dma_chan *chan, struct dma_slave_caps *caps);
#else
static inline struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type)
{
@ -1082,6 +1081,11 @@ static inline struct dma_chan *dma_request_slave_channel(struct device *dev,
static inline void dma_release_channel(struct dma_chan *chan)
{
}
static inline int dma_get_slave_caps(struct dma_chan *chan,
struct dma_slave_caps *caps)
{
return -ENXIO;
}
#endif
/* --- DMA device --- */