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authorChristoph Hellwig <hch@lst.de>2018-04-12 09:33:30 +0200
committerChristoph Hellwig <hch@lst.de>2018-05-07 07:15:41 +0200
commit325ef1857fff8b2049322921e19421b6c5ad74e5 (patch)
treed4f0dc35d4e37e18c432e76292e3a453462dd02e /arch/sh
parentnet: remove the PCI_DMA_BUS_IS_PHYS check in illegal_highdma (diff)
downloadlinux-dev-325ef1857fff8b2049322921e19421b6c5ad74e5.tar.xz
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PCI: remove PCI_DMA_BUS_IS_PHYS
This was used by the ide, scsi and networking code in the past to determine if they should bounce payloads. Now that the dma mapping always have to support dma to all physical memory (thanks to swiotlb for non-iommu systems) there is no need to this crude hack any more. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Palmer Dabbelt <palmer@sifive.com> (for riscv) Reviewed-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to '')
-rw-r--r--arch/sh/include/asm/pci.h6
-rw-r--r--arch/sh/kernel/dma-nommu.c1
2 files changed, 0 insertions, 7 deletions
diff --git a/arch/sh/include/asm/pci.h b/arch/sh/include/asm/pci.h
index 0033f0df2b3b..10a36b1cf2ea 100644
--- a/arch/sh/include/asm/pci.h
+++ b/arch/sh/include/asm/pci.h
@@ -71,12 +71,6 @@ extern unsigned long PCIBIOS_MIN_IO, PCIBIOS_MIN_MEM;
* SuperH has everything mapped statically like x86.
*/
-/* The PCI address space does equal the physical memory
- * address space. The networking and block device layers use
- * this boolean for bounce buffer decisions.
- */
-#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
-
#ifdef CONFIG_PCI
/*
* None of the SH PCI controllers support MWI, it is always treated as a
diff --git a/arch/sh/kernel/dma-nommu.c b/arch/sh/kernel/dma-nommu.c
index 178457d7620c..3e3a32fc676e 100644
--- a/arch/sh/kernel/dma-nommu.c
+++ b/arch/sh/kernel/dma-nommu.c
@@ -78,7 +78,6 @@ const struct dma_map_ops nommu_dma_ops = {
.sync_single_for_device = nommu_sync_single_for_device,
.sync_sg_for_device = nommu_sync_sg_for_device,
#endif
- .is_phys = 1,
};
void __init no_iommu_init(void)