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[3/9] drm/exynos: remove using non-consistent DMA attribute

Message ID 1444719654-10639-4-git-send-email-jy0922.shim@samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

Joonyoung Shim Oct. 13, 2015, 7 a.m. UTC 
DMA_ATTR_NON_CONSISTENT isn't supported in DMA mapping API of ARM, so
it doesn't give any effects to use non-consistent DMA attribute.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_gem.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)
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Patch

diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index 17a52f89a690..d5951f75c774 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -41,15 +41,10 @@  static int exynos_drm_alloc_buf(struct exynos_drm_gem *exynos_gem)
 	if (!(exynos_gem->flags & EXYNOS_BO_NONCONTIG))
 		dma_set_attr(DMA_ATTR_FORCE_CONTIGUOUS, &exynos_gem->dma_attrs);
 
-	/*
-	 * if EXYNOS_BO_WC or EXYNOS_BO_NONCACHABLE, writecombine mapping
-	 * else cachable mapping.
-	 */
+	/* if EXYNOS_BO_WC or EXYNOS_BO_NONCACHABLE, writecombine mapping */
 	if (exynos_gem->flags & EXYNOS_BO_WC ||
 			!(exynos_gem->flags & EXYNOS_BO_CACHABLE))
 		attr = DMA_ATTR_WRITE_COMBINE;
-	else
-		attr = DMA_ATTR_NON_CONSISTENT;
 
 	dma_set_attr(attr, &exynos_gem->dma_attrs);
 	dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &exynos_gem->dma_attrs);