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authorGlauber Costa <gcosta@redhat.com>2008-04-08 13:20:43 -0300
committerIngo Molnar <mingo@elte.hu>2008-04-19 19:19:57 +0200
commit459121c9ec1e6c5d701f6520f4170719ac008951 (patch)
tree5b0fd3dbc761647e8da7a2be103c797cce0a8621 /arch/x86/kernel/pci-dma.c
parent19e395afb44746ce7422a9eabcf883d5eec2bb80 (diff)
x86: introduce pci-dma.c
This patch introduces pci-dma.c, a common file for pci dma between i386 and x86_64. As a start, dma_set_mask() is the same between architectures, and is placed there. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/pci-dma.c')
-rw-r--r--arch/x86/kernel/pci-dma.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
new file mode 100644
index 00000000000..f1c24d8e794
--- /dev/null
+++ b/arch/x86/kernel/pci-dma.c
@@ -0,0 +1,14 @@
+#include <linux/dma-mapping.h>
+
+int dma_set_mask(struct device *dev, u64 mask)
+{
+ if (!dev->dma_mask || !dma_supported(dev, mask))
+ return -EIO;
+
+ *dev->dma_mask = mask;
+
+ return 0;
+}
+EXPORT_SYMBOL(dma_set_mask);
+
+