diff options
| author | Christoph Hellwig <hch@lst.de> | 2024-08-28 08:02:47 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2024-09-04 06:08:51 +0200 |
| commit | de6c85bf918ea52d5c680f0d130b37ee2ff152d6 (patch) | |
| tree | 4dd1ee15eaeac8ee0f26c1c4ec258d6b81057581 /drivers/vdpa | |
| parent | vdpa_sim: don't select DMA_OPS (diff) | |
| download | linux-de6c85bf918ea52d5c680f0d130b37ee2ff152d6.tar.xz linux-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/vdpa')
| -rw-r--r-- | drivers/vdpa/Kconfig | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/vdpa/Kconfig b/drivers/vdpa/Kconfig index b08de3b77061..559fb9d3271f 100644 --- a/drivers/vdpa/Kconfig +++ b/drivers/vdpa/Kconfig @@ -35,7 +35,12 @@ config VDPA_SIM_BLOCK config VDPA_USER tristate "VDUSE (vDPA Device in Userspace) support" depends on EVENTFD && MMU && HAS_DMA - select DMA_OPS + # + # This driver incorrectly tries to override the dma_ops. It should + # never have done that, but for now keep it working on architectures + # that use dma ops + # + depends on ARCH_HAS_DMA_OPS select VHOST_IOTLB select IOMMU_IOVA help |