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-rw-r--r--arch/x86/Kconfig10
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 720206f..d57ddd7 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -123,7 +123,7 @@ config NEED_SG_DMA_LENGTH
def_bool y
config GENERIC_ISA_DMA
- def_bool y
+ def_bool ISA_DMA_API
config GENERIC_IOMAP
def_bool y
@@ -2002,9 +2002,13 @@ source "drivers/pci/pcie/Kconfig"
source "drivers/pci/Kconfig"
-# x86_64 have no ISA slots, but do have ISA-style DMA.
+# x86_64 have no ISA slots, but can have ISA-style DMA.
config ISA_DMA_API
- def_bool y
+ bool "ISA-style DMA support" if (X86_64 && EXPERT)
+ default y
+ help
+ Enables ISA-style DMA support for devices requiring such controllers.
+ If unsure, say Y.
if X86_32
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