Hi,
On Friday 20 September 2013 04:41 AM, Russell King wrote:
The correct way for a driver to specify the coherent DMA mask is not to directly access the field in the struct device, but to use dma_set_coherent_mask(). Only arch and bus code should access this member directly.
Convert all direct write accesses to using the correct API.
Signed-off-by: Russell King rmk+kernel@arm.linux.org.uk
drivers/ata/pata_ixp4xx_cf.c | 5 ++++- drivers/gpu/drm/exynos/exynos_drm_drv.c | 6 +++++- drivers/gpu/drm/omapdrm/omap_dmm_tiler.c | 5 +++-- 3 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/drivers/ata/pata_ixp4xx_cf.c b/drivers/ata/pata_ixp4xx_cf.c index 1ec53f8..ddf470c 100644 --- a/drivers/ata/pata_ixp4xx_cf.c +++ b/drivers/ata/pata_ixp4xx_cf.c @@ -144,6 +144,7 @@ static int ixp4xx_pata_probe(struct platform_device *pdev) struct ata_host *host; struct ata_port *ap; struct ixp4xx_pata_data *data = dev_get_platdata(&pdev->dev);
int ret;
cs0 = platform_get_resource(pdev, IORESOURCE_MEM, 0); cs1 = platform_get_resource(pdev, IORESOURCE_MEM, 1);
@@ -157,7 +158,9 @@ static int ixp4xx_pata_probe(struct platform_device *pdev) return -ENOMEM;
/* acquire resources and fill host */
- pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
if (ret)
return ret;data->cs0 = devm_ioremap(&pdev->dev, cs0->start, 0x1000); data->cs1 = devm_ioremap(&pdev->dev, cs1->start, 0x1000);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c index bb82ef7..81192d0 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c @@ -286,7 +286,11 @@ static struct drm_driver exynos_drm_driver = {
static int exynos_drm_platform_probe(struct platform_device *pdev) {
- pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
int ret;
ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
if (ret)
return ret;return drm_platform_init(&exynos_drm_driver, pdev); }
diff --git a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c index acf6678..701c4c1 100644 --- a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c +++ b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c @@ -664,8 +664,9 @@ static int omap_dmm_probe(struct platform_device *dev) }
/* set dma mask for device */
- /* NOTE: this is a workaround for the hwmod not initializing properly */
- dev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
- ret = dma_set_coherent_mask(&dev->dev, DMA_BIT_MASK(32));
- if (ret)
goto fail;
Tested with omapdrm on omap4 panda es board.
Thanks, Archit