diff options
| author | Johannes Berg | 2022-03-28 09:46:25 +0200 |
|---|---|---|
| committer | Richard Weinberger | 2022-05-27 09:00:45 +0200 |
| commit | 365719035526e8eda214a1cedb2e1c96e969a0d7 (patch) | |
| tree | 830f17a18aeb9b1fecdbaa8406d444b2209a31cf | |
| parent | b0cbccf4480bd251d7911e7fa1913e47769dc724 (diff) | |
um: Use asm-generic/dma-mapping.h
If DMA (PCI over virtio) is enabled, then some drivers may
enable CONFIG_DMA_OPS as well, and then we pull in the x86
definition of get_arch_dma_ops(), which uses the dma_ops
symbol, which isn't defined.
Since we don't have real DMA ops nor any kind of IOMMU fix
this in the simplest possible way: pull in the asm-generic
file instead of inheriting the x86 one. It's not clear why
those drivers that do (e.g. VDPA) "select DMA_OPS", and if
they'd even work with this, but chances are nobody will be
wanting to do that anyway, so fixing the build failure is
good enough.
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Fixes: 68f5d3f3b654 ("um: add PCI over virtio emulation driver")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Cc: stable@vger.kernel.org
Signed-off-by: Richard Weinberger <richard@nod.at>
| -rw-r--r-- | arch/um/include/asm/Kbuild | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/um/include/asm/Kbuild b/arch/um/include/asm/Kbuild index f1f3f52f1e9c..b2d834a29f3a 100644 --- a/arch/um/include/asm/Kbuild +++ b/arch/um/include/asm/Kbuild @@ -4,6 +4,7 @@ generic-y += bug.h generic-y += compat.h generic-y += current.h generic-y += device.h +generic-y += dma-mapping.h generic-y += emergency-restart.h generic-y += exec.h generic-y += extable.h |