[PATCH v3 4/5] ARM: footbridge: limit CONFIG_ISA to CATS

[Arnd Bergmann]

From: Arnd Bergmann <arnd at arndb.de>

The CONFIG_ISA option is only used for actual add-in cards, not
on-board devices. NetWinder has no hardware support for those,
and ebsa285 appears to not support them in Linux, as the XBUS
is not set up that way and there is no support for a PCI-ISA
bridge.

CATS on the other hand has four ISA slots connected to a PCI-ISA
bridge device.

Russell mentioned that it is no longer possible to select the sound
drivers for Netwinder after this, as the WaveArtist sound chip is
connected to the ISA bus. However, the WaveArtist module was removed
years ago in linux-4.15 and did not actually depend on CONFIG_ISA.
While the SoundBlaster compatibility mode of the SoundChip might work
with the ALSA sb16-isa driver with a little help, there is no mixer
support without the waveartist driver, and the default settings for
sb16 never probe IRQ 3.

Link: https://lore.kernel.org/linux-arm-kernel/87v8q3unlv.wl-maz@kernel.org/
Tested-by: Marc Zyngier <maz at kernel.org>
Signed-off-by: Arnd Bergmann <arnd at arndb.de>
---
 arch/arm/mach-footbridge/Kconfig | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/arm/mach-footbridge/Kconfig b/arch/arm/mach-footbridge/Kconfig
index 1a3676109654..cd18871fd03f 100644
--- a/arch/arm/mach-footbridge/Kconfig
+++ b/arch/arm/mach-footbridge/Kconfig
@@ -18,7 +18,6 @@ config ARCH_CATS
 config ARCH_EBSA285_HOST
 	bool "EBSA285 (host mode)"
 	select ARCH_EBSA285
-	select ISA
 	select ARCH_MAY_HAVE_PC_FDC
 	select FORCE_PCI
 	help
@@ -31,7 +30,6 @@ config ARCH_NETWINDER
 	bool "NetWinder"
 	select CLKEVT_I8253
 	select CLKSRC_I8253
-	select ISA
 	select FORCE_PCI
 	help
 	  Say Y here if you intend to run this kernel on the Rebel.COM
-- 
2.29.2