[PATCH 4.19 192/267] MIPS: CPU_LOONGSON2EF need software to maintain cache consistency

Greg Kroah-Hartman
2020-06-19T16:17:16Z

From: Lichao Liu <liulichao@loongson.cn>

commit a202bf71f08b3ef15356db30535e30b03cf23aec upstream.

CPU_LOONGSON2EF need software to maintain cache consistency,
so modify the 'cpu_needs_post_dma_flush' function to return true
when the cpu type is CPU_LOONGSON2EF.

Cc: stable@vger.kernel.org
Signed-off-by: Lichao Liu <liulichao@loongson.cn>
Reviewed-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>

---
arch/mips/mm/dma-noncoherent.c | 1 +
1 file changed, 1 insertion(+)

--- a/arch/mips/mm/dma-noncoherent.c
+++ b/arch/mips/mm/dma-noncoherent.c
@@ -56,6 +56,7 @@ static inline bool cpu_needs_post_dma_fl
case CPU_R10000:
case CPU_R12000:
case CPU_BMIPS5000:
+ case CPU_LOONGSON2EF:
return true;
default:
/*