From: Kristoffer Glembo <kristoffer@gaisler.com>
Date: Tue, 18 Jan 2011 04:10:27 +0000 (+0000)
Subject: sparc/leon: Make mmu_inval_dma_area flush dcache for LEONs without snooping enabled.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1b19274083d67f66ce3097c8d2bebc22b7911e3f;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

sparc/leon: Make mmu_inval_dma_area flush dcache for LEONs without snooping enabled.

Signed-off-by: Kristoffer Glembo <kristoffer@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c
index b81748119cf7..815003b5fab6 100644
--- a/arch/sparc/kernel/ioport.c
+++ b/arch/sparc/kernel/ioport.c
@@ -50,10 +50,14 @@
 #include <asm/io-unit.h>
 #include <asm/leon.h>
 
-#ifdef CONFIG_SPARC_LEON
-#define mmu_inval_dma_area(p, l) leon_flush_dcache_all()
-#else
+#ifndef CONFIG_SPARC_LEON
 #define mmu_inval_dma_area(p, l)	/* Anton pulled it out for 2.4.0-xx */
+#else
+static inline void mmu_inval_dma_area(unsigned long va, unsigned long len)
+{
+	if (!sparc_leon3_snooping_enabled())
+		leon_flush_dcache_all();
+}
 #endif
 
 static struct resource *_sparc_find_resource(struct resource *r,