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| author | Matt Redfearn <matt.redfearn@imgtec.com> | 2017-01-23 17:08:13 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-29 12:31:56 +0300 |
| commit | 5955f16e49ecf3d9ab8ffe2c46756ba4c228ebb2 (patch) | |
| tree | 716b8fca700d5e749226865250b6c4d126309099 /arch | |
| parent | 4dcd6ce1dff4903a6f3a928962dd03b0a7ecef15 (diff) | |
| download | linux-5955f16e49ecf3d9ab8ffe2c46756ba4c228ebb2.tar.xz | |
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: Matt Redfearn <matt.redfearn@imgtec.com>
Fixes: eed0eabd12ef ("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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 2d2fd79ced9d..34fbbf8fdeaa 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -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 |