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authorLinus Torvalds <torvalds@linux-foundation.org>2016-05-21 19:25:19 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-21 19:25:19 +0200
commit51e68d055cbabfd36cba3903fd2a223bc98514b1 (patch)
tree5cb95cfd5e282b130ab7ff91610039604b43fbf7 /arch
parentMerge branch 'akpm' (patches from Andrew) (diff)
downloadlinux-51e68d055cbabfd36cba3903fd2a223bc98514b1.tar.xz
linux-51e68d055cbabfd36cba3903fd2a223bc98514b1.zip
x86 isa: add back X86_32 dependency on CONFIG_ISA
Commit b3c1be1b789c ("base: isa: Remove X86_32 dependency") made ISA support available on x86-64 too. That's not right - while there are some LPC-style devices that might be useful still and be based on ISA-like IP blocks, that is *not* an excuse to try to enable any random legacy drivers. Such drivers should be individually enabled and made to perhaps depend on ISA_DMA_API instead (which we have continued to support on x86-64). Or we could add another "ISA_XYZ_API" that we support that doesn't enable random old drivers that aren't even 64-bit clean nor do we have any test coverage for. Turning off ISA will now also turn off some drivers that have been marked as depending on it as part of this series, and that used to work on modern platforms. See for example commits ad7afc38eab3..cc736607c86d, which may also need to be reverted. This commit means that the warnings that came in due to enabling ISA widely are now gone again. Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/Kconfig4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 48ac29034e1e..0a7b885964ba 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2447,6 +2447,8 @@ config ISA_DMA_API
Enables ISA-style DMA support for devices requiring such controllers.
If unsure, say Y.
+if X86_32
+
config ISA
bool "ISA support"
---help---
@@ -2456,8 +2458,6 @@ config ISA
(MCA) or VESA. ISA is an older system, now being displaced by PCI;
newer boards don't support it. If you have ISA, say Y, otherwise N.
-if X86_32
-
config EISA
bool "EISA support"
depends on ISA