From: David Moore <[EMAIL PROTECTED]>
Missing critical phys_to_virt in lib/swiotlb.c
Adds missing call to phys_to_virt() in the
lib/swiotlb.c:swiotlb_sync_sg() function. Without this change, a kernel
panic will always occur whenever a SWIOTLB bounce buffer from a
scatter-gather list gets synced. Affected are especially Intel x86_64
machines with more than about 3 GB RAM.
Signed-off-by: David Moore <[EMAIL PROTECTED]>
Signed-off-by: Stefan Richter <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
lib/swiotlb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- linux-2.6.20.1.orig/lib/swiotlb.c
+++ linux-2.6.20.1/lib/swiotlb.c
@@ -750,7 +750,7 @@ swiotlb_sync_sg(struct device *hwdev, st
for (i = 0; i < nelems; i++, sg++)
if (sg->dma_address != SG_ENT_PHYS_ADDRESS(sg))
- sync_single(hwdev, (void *) sg->dma_address,
+ sync_single(hwdev, phys_to_virt(sg->dma_address),
sg->dma_length, dir, target);
}
--
-
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