OpenCloudOS-Kernel/arch/mips/include
Jiaxun Yang 1eed445d53 MIPS: Loongson64: Enable DMA noncoherent support
commit edc0378eee00200a5bedf1bb9f00ad390e0d1bd4 upstream.

There are some Loongson64 systems come with broken coherent DMA
support, firmware will set a bit in boot_param and pass nocoherentio
in cmdline.

However nonconherent support was missed out when spin off Loongson-2EF
form Loongson64, and that boot_param change never made itself into
upstream.

Support DMA noncoherent properly to get those systems working.

Cc: stable@vger.kernel.org
Fixes: 71e2f4dd5a ("MIPS: Fork loongson2ef from loongson64")
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-12-13 18:45:35 +01:00
..
asm MIPS: Loongson64: Enable DMA noncoherent support 2023-12-13 18:45:35 +01:00
uapi/asm - added support for TP-Link HC220 G5 v1 2023-06-29 15:01:51 -07:00