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| author | Christoph Hellwig <hch@lst.de> | 2024-08-28 09:02:47 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2024-09-04 07:08:51 +0300 |
| commit | de6c85bf918ea52d5c680f0d130b37ee2ff152d6 (patch) | |
| tree | 4dd1ee15eaeac8ee0f26c1c4ec258d6b81057581 /drivers/xen | |
| parent | 92193b3569ade4968011007356c8606def0657a1 (diff) | |
| download | lwn-de6c85bf918ea52d5c680f0d130b37ee2ff152d6.tar.gz lwn-de6c85bf918ea52d5c680f0d130b37ee2ff152d6.zip | |
dma-mapping: clearly mark DMA ops as an architecture feature
DMA ops are a helper for architectures and not for drivers to override
the DMA implementation.
Unfortunately driver authors keep ignoring this. Make the fact more
clear by renaming the symbol to ARCH_HAS_DMA_OPS and having the two drivers
overriding their dma_ops depend on that. These drivers should probably be
marked broken, but we can give them a bit of a grace period for that.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> # for IPU6
Acked-by: Robin Murphy <robin.murphy@arm.com>
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/Kconfig | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig index d5989871dd5d..f7d6f47971fd 100644 --- a/drivers/xen/Kconfig +++ b/drivers/xen/Kconfig @@ -177,8 +177,8 @@ config XEN_GRANT_DMA_ALLOC config SWIOTLB_XEN def_bool y + depends on ARCH_HAS_DMA_OPS depends on XEN_PV || ARM || ARM64 - select DMA_OPS select SWIOTLB config XEN_PCI_STUB @@ -348,10 +348,10 @@ config XEN_GRANT_DMA_IOMMU config XEN_GRANT_DMA_OPS bool - select DMA_OPS config XEN_VIRTIO bool "Xen virtio support" + depends on ARCH_HAS_DMA_OPS depends on VIRTIO select XEN_GRANT_DMA_OPS select XEN_GRANT_DMA_IOMMU if OF |