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MIPS: Generic: Fix big endian CPUs on generic machine

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commit a3078e593b 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: 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>
Cc: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Matt Redfearn
2017-01-23 14:08:13 +00:00
committed by Greg Kroah-Hartman
parent 4dcd6ce1df
commit 5955f16e49
1 changed files with 1 additions and 0 deletions
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1
arch/mips/Kconfig
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@@ -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