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DMA-API: media: omap3isp: use dma_coerce_mask_and_coherent()

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The code sequence:
	isp->raw_dmamask = DMA_BIT_MASK(32);
	isp->dev->dma_mask = &isp->raw_dmamask;
	isp->dev->coherent_dma_mask = DMA_BIT_MASK(32);
bypasses the architectures check on the DMA mask.  It can be replaced
with dma_coerce_mask_and_coherent(), avoiding the direct initialization
of this mask.

Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2013-06-27 14:09:01 +01:00
parent 24353b8bb4
commit 224ddca0f2
2 changed files with 3 additions and 6 deletions
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6
drivers/media/platform/omap3isp/isp.c
View File

@ -2182,9 +2182,9 @@ static int isp_probe(struct platform_device *pdev)
isp->pdata = pdata;
isp->ref_count = 0;
isp->raw_dmamask = DMA_BIT_MASK(32);
isp->dev->dma_mask = &isp->raw_dmamask;
isp->dev->coherent_dma_mask = DMA_BIT_MASK(32);
ret = dma_coerce_mask_and_coherent(isp->dev, DMA_BIT_MASK(32));
if (ret)
return ret;
platform_set_drvdata(pdev, isp);

3
drivers/media/platform/omap3isp/isp.h
View File

@ -152,7 +152,6 @@ struct isp_xclk {
* @mmio_base_phys: Array with physical L4 bus addresses for ISP register
* regions.
* @mmio_size: Array with ISP register regions size in bytes.
* @raw_dmamask: Raw DMA mask
* @stat_lock: Spinlock for handling statistics
* @isp_mutex: Mutex for serializing requests to ISP.
* @crashed: Bitmask of crashed entities (indexed by entity ID)
@ -190,8 +189,6 @@ struct isp_device {
unsigned long mmio_base_phys[OMAP3_ISP_IOMEM_LAST];
resource_size_t mmio_size[OMAP3_ISP_IOMEM_LAST];
u64 raw_dmamask;
/* ISP Obj */
spinlock_t stat_lock; /* common lock for statistic drivers */
struct mutex isp_mutex; /* For handling ref_count field */