Jiaxun Yang 1ed694fec5 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: 71e2f4dd5a65 ("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 18:36:50 +01:00
..
2023-09-19 12:22:27 +02:00
2023-02-01 08:27:20 +01:00
2023-12-13 18:36:49 +01:00
2023-11-20 11:08:23 +01:00
2023-09-19 12:22:49 +02:00
2023-08-08 19:58:30 +02:00