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drivers: remove force dma flag from buses

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With each bus implementing its own DMA configuration callback, there is no
need for bus to explicitly set the force_dma flag.  Modify the
of_dma_configure function to accept an input parameter which specifies if
implicit DMA configuration is required when it is not described by the
firmware.

Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>  # PCI parts
Reviewed-by: Rob Herring <robh@kernel.org>
[hch: tweaked the changelog a bit]
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2018-05-03 16:25:08 +02:00
parent 07397df29e
commit 3d6ce86ee7
10 changed files with 17 additions and 19 deletions
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8
include/linux/of_device.h
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@ -55,7 +55,9 @@ static inline struct device_node *of_cpu_device_node_get(int cpu)
return of_node_get(cpu_dev->of_node);
}
int of_dma_configure(struct device *dev, struct device_node *np);
int of_dma_configure(struct device *dev,
struct device_node *np,
bool force_dma);
void of_dma_deconfigure(struct device *dev);
#else /* CONFIG_OF */
@ -105,7 +107,9 @@ static inline struct device_node *of_cpu_device_node_get(int cpu)
return NULL;
}
static inline int of_dma_configure(struct device *dev, struct device_node *np)
static inline int of_dma_configure(struct device *dev,
struct device_node *np,
bool force_dma)
{
return 0;
}