Date: Sun, 04 Feb 2007 13:39:40 -0500 From: David Moore <[EMAIL PROTECTED]>
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. Signed-off-by: David Moore <[EMAIL PROTECTED]> Signed-off-by: Stefan Richter <[EMAIL PROTECTED]> --- This is a fraction of patch "[IA64] swiotlb bug fixes" in 2.6.20-git#, commit cde14bbfb3aa79b479db35bd29e6c083513d8614. Unlike its heading suggests, it is also important for EM64T. Example crashes caused by swiotlb_sync_sg: http://lists.opensuse.org/opensuse-bugs/2006-12/msg02943.html http://qa.mandriva.com/show_bug.cgi?id=28224 http://www.pchdtv.com/forum/viewtopic.php?t=2063&sid=a959a14a4c2db0eebaab7b0df56103ce --- linux-2.6.20.orig/lib/swiotlb.c 2007-02-04 13:18:41.000000000 -0500 +++ linux-2.6.20/lib/swiotlb.c 2007-02-04 13:19:43.000000000 -0500 @@ -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); } -- Stefan Richter -=====-=-=== --=- -=-=- http://arcgraph.de/sr/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
