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Commit 5955f16e authored by Matt Redfearn's avatar Matt Redfearn Committed by Greg Kroah-Hartman
Browse files

MIPS: Generic: Fix big endian CPUs on generic machine 



commit a3078e593b74fe196e69f122f03ff0b32f652c53 upstream.

Big endian CPUs require SWAP_IO_SPACE enabled to swap accesses to little
endian peripherals.

Without this patch, big endian kernels fail to communicate with little
endian periperals, such as PCI devices, on QEMU and FPGA based
platforms.

Signed-off-by: default avatarMatt Redfearn <matt.redfearn@imgtec.com>
Fixes: eed0eabd ("MIPS: generic: Introduce generic DT-based board support")
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15105/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
Cc: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 4dcd6ce1

arch/mips/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -95,6 +95,7 @@ config MIPS_GENERIC 
	select PCI_DRIVERS_GENERIC

	select PINCTRL

	select SMP_UP if SMP

	select SWAP_IO_SPACE

	select SYS_HAS_CPU_MIPS32_R1

	select SYS_HAS_CPU_MIPS32_R2

	select SYS_HAS_CPU_MIPS32_R6