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| author | Matt Redfearn <matt.redfearn@imgtec.com> | 2017-01-23 14:08:13 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2017-01-25 02:51:12 +0100 |
| commit | a3078e593b74fe196e69f122f03ff0b32f652c53 (patch) | |
| tree | 26a1dc7d612c296fc82ecf22c3a7a31b07f6b4ed /arch/mips | |
| parent | e7093053f7a5ab91241e41df273f0e34552a3a22 (diff) | |
| download | lwn-a3078e593b74fe196e69f122f03ff0b32f652c53.tar.gz lwn-a3078e593b74fe196e69f122f03ff0b32f652c53.zip | |
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: 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>
Diffstat (limited to 'arch/mips')
| -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 ffd2f67b1aa2..b969522feb97 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -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 |