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arm: remove the mapping_error dma_map_ops method

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Arm already returns (~(dma_addr_t)0x0) on mapping failures, so we can
switch over to returning DMA_MAPPING_ERROR and let the core dma-mapping
code handle the rest.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig
2018-11-21 18:57:36 +01:00
parent b0cbeae494
commit 72fd97bf4e
3 changed files with 18 additions and 35 deletions
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2
arch/arm/include/asm/dma-iommu.h
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@@ -9,8 +9,6 @@
#include <linux/dma-debug.h>
#include <linux/kref.h>
#define ARM_MAPPING_ERROR (~(dma_addr_t)0x0)
struct dma_iommu_mapping {
/* iommu specific data */
struct iommu_domain *domain;