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dmaengine: Add devm_dma_request_chan()

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Expand the arsenal of devm functions for DMA devices, this time for
requesting channels.

Signed-off-by: Bence Csókás <csokas.bence@prolan.hu>
Link: https://lore.kernel.org/r/20250610082256.400492-2-csokas.bence@prolan.hu
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Bence Csókás
2025-06-10 10:22:53 +02:00
committed by Vinod Koul
parent 19272b37aa
commit 08bf1663c2
2 changed files with 37 additions and 0 deletions
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7
include/linux/dmaengine.h
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@@ -1524,6 +1524,7 @@ struct dma_chan *__dma_request_channel(const dma_cap_mask_t *mask,
struct dma_chan *dma_request_chan(struct device *dev, const char *name);
struct dma_chan *dma_request_chan_by_mask(const dma_cap_mask_t *mask);
struct dma_chan *devm_dma_request_chan(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);
@@ -1560,6 +1561,12 @@ static inline struct dma_chan *dma_request_chan_by_mask(
{
return ERR_PTR(-ENODEV);
}
static inline struct dma_chan *devm_dma_request_chan(struct device *dev, const char *name)
{
return ERR_PTR(-ENODEV);
}
static inline void dma_release_channel(struct dma_chan *chan)
{
}