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MIPS: Generic: Fix big endian CPUs on generic machine 

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: Matt Redfearn <matt.redfearn@imgtec.com>
Fixes: eed0eabd12 ("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: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Matt Redfearn 2017-01-23 14:08:13 +00:00 committed by Ralf Baechle
parent e7093053f7
commit a3078e593b
1 changed files with 1 additions and 0 deletions
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1
arch/mips/Kconfig
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@ -97,6 +97,7 @@ 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