From: Glauber Costa <gcosta@redhat.com>
Date: Tue, 25 Mar 2008 21:36:37 +0000 (-0300)
Subject: x86: unify dma_mapping_error
X-Git-Tag: v2.6.26-rc1~1133^2~32
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c786df08f6df2833e34e78cee5ef62558e3b5346;p=linux-2.6

x86: unify dma_mapping_error

We provide a map_error function in pci-base_32.c to make
sure i386 keeps with the same behaviour it used to.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/arch/x86/kernel/pci-base_32.c b/arch/x86/kernel/pci-base_32.c
index cf4bb28dfc..7caf5c211f 100644
--- a/arch/x86/kernel/pci-base_32.c
+++ b/arch/x86/kernel/pci-base_32.c
@@ -30,6 +30,12 @@ static int pci32_dma_map_sg(struct device *dev, struct scatterlist *sglist,
 	return nents;
 }
 
+/* Make sure we keep the same behaviour */
+static int pci32_map_error(dma_addr_t dma_addr)
+{
+	return 0;
+}
+
 static const struct dma_mapping_ops pci32_dma_ops = {
 	.map_single = pci32_map_single,
 	.unmap_single = NULL,
@@ -41,6 +47,7 @@ static const struct dma_mapping_ops pci32_dma_ops = {
 	.sync_single_range_for_device = NULL,
 	.sync_sg_for_cpu = NULL,
 	.sync_sg_for_device = NULL,
+	.mapping_error = pci32_map_error,
 };
 
 const struct dma_mapping_ops *dma_ops = &pci32_dma_ops;
diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 984935d86b..a7090bbb2a 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -54,6 +54,14 @@ struct dma_mapping_ops {
 
 extern const struct dma_mapping_ops *dma_ops;
 
+static inline int dma_mapping_error(dma_addr_t dma_addr)
+{
+	if (dma_ops->mapping_error)
+		return dma_ops->mapping_error(dma_addr);
+
+	return (dma_addr == bad_dma_address);
+}
+
 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
 
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index d0512c9251..03a75f8665 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -8,12 +8,6 @@
 #include <asm/io.h>
 #include <asm/bug.h>
 
-static inline int
-dma_mapping_error(dma_addr_t dma_addr)
-{
-	return 0;
-}
-
 extern int forbid_dac;
 
 static inline int
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index 352bf4164a..8353025f05 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -3,14 +3,6 @@
 
 extern int iommu_merge;
 
-static inline int dma_mapping_error(dma_addr_t dma_addr)
-{
-	if (dma_ops->mapping_error)
-		return dma_ops->mapping_error(dma_addr);
-
-	return (dma_addr == bad_dma_address);
-}
-
 /* same for gart, swiotlb, and nommu */
 static inline int dma_get_cache_alignment(void)
 {