[PATCH for review] [86/145] x86_64: remove superflous BUG_ON's in nommu and gart

[Andi Kleen]

r

From: Muli Ben-Yehuda <muli@xxxxxxxxxx>

There's no need to check for invalid DMA data direction in nommu and
gart since we do it in dma-mapping.h anyway before calling the
individual dma-ops.

Signed-off-by: Muli Ben-Yehuda <muli@xxxxxxxxxx>
Signed-off-by: Andi Kleen <ak@xxxxxxx>

---
 arch/x86_64/kernel/pci-gart.c  |    3 ---
 arch/x86_64/kernel/pci-nommu.c |    1 -
 2 files changed, 4 deletions(-)

Index: linux/arch/x86_64/kernel/pci-gart.c
===================================================================
--- linux.orig/arch/x86_64/kernel/pci-gart.c
+++ linux/arch/x86_64/kernel/pci-gart.c
@@ -239,8 +239,6 @@ dma_addr_t gart_map_single(struct device
 {
 	unsigned long phys_mem, bus;
 
-	BUG_ON(dir == DMA_NONE);
-
 	if (!dev)
 		dev = &fallback_dev;
 
@@ -383,7 +381,6 @@ int gart_map_sg(struct device *dev, stru
 	unsigned long pages = 0;
 	int need = 0, nextneed;
 
-	BUG_ON(dir == DMA_NONE);
 	if (nents == 0) 
 		return 0;
 
Index: linux/arch/x86_64/kernel/pci-nommu.c
===================================================================
--- linux.orig/arch/x86_64/kernel/pci-nommu.c
+++ linux/arch/x86_64/kernel/pci-nommu.c
@@ -59,7 +59,6 @@ int nommu_map_sg(struct device *hwdev, s
 {
 	int i;
 
-	BUG_ON(direction == DMA_NONE);
  	for (i = 0; i < nents; i++ ) {
 		struct scatterlist *s = &sg[i];
 		BUG_ON(!s->page);
-
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