dma-mapping: move the NEED_DMA_MAP_STATE config symbol to lib/Kconfig
This way we have one central definition of it, and user can select it as
needed. Note that we now also always select it when CONFIG_DMA_API_DEBUG
is select, which fixes some incorrect checks in a few network drivers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 9cbadd6..06eea9b 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -28,6 +28,7 @@
select ARCH_USE_CMPXCHG_LOCKREF
select HAVE_ARCH_SOFT_DIRTY
select MODULES_USE_ELF_RELA
+ select NEED_DMA_MAP_STATE
select X86_DEV_DMA_OPS
select ARCH_HAS_SYSCALL_WRAPPER
@@ -236,10 +237,6 @@
config SBUS
bool
-config NEED_DMA_MAP_STATE
- def_bool y
- depends on X86_64 || INTEL_IOMMU || DMA_API_DEBUG || SWIOTLB
-
config GENERIC_ISA_DMA
def_bool y
depends on ISA_DMA_API
@@ -925,6 +922,7 @@
# need this always selected by IOMMU for the VIA workaround
config SWIOTLB
def_bool y if X86_64
+ select NEED_DMA_MAP_STATE
---help---
Support for software bounce buffers used on x86-64 systems
which don't have a hardware IOMMU. Using this PCI devices
