From: Lichao Liu <liulichao@loongson.cn>
Date: Thu, 28 May 2020 01:10:31 +0000 (+0800)
Subject: MIPS: CPU_LOONGSON2EF need software to maintain cache consistency
X-Git-Tag: v5.8-rc1~173^2~8
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a202bf71f08b3ef15356db30535e30b03cf23aec;p=thirdparty%2Fkernel%2Flinux.git

MIPS: CPU_LOONGSON2EF need software to maintain cache consistency

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>
---

diff --git a/arch/mips/mm/dma-noncoherent.c b/arch/mips/mm/dma-noncoherent.c
index fcea92d95d860..563c2c0d0c819 100644
--- a/arch/mips/mm/dma-noncoherent.c
+++ b/arch/mips/mm/dma-noncoherent.c
@@ -33,6 +33,7 @@ static inline bool cpu_needs_post_dma_flush(void)
 	case CPU_R10000:
 	case CPU_R12000:
 	case CPU_BMIPS5000:
+	case CPU_LOONGSON2EF:
 		return true;
 	default:
 		/*