diff options
authorSebastian Ott <sebott@linux.vnet.ibm.com>2015-04-16 12:43:25 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-17 09:03:54 -0400
commita7a2c02a40151811609ad8cd3bf5c4fc516fece5 (patch)
parent7c43d9a30c527d9e06e2c55f82b56f28df43caed (diff)
lib/dma-debug: fix bucket_find_contain()
bucket_find_contain() will search the bucket list for a dma_debug_entry. When the entry isn't found it needs to search other buckets too, since only the start address of a dma range is hashed (which might be in a different bucket). A copy of the dma_debug_entry is used to get the previous hash bucket but when its list is searched the original dma_debug_entry is to be used not its modified copy. This fixes false "device driver tries to sync DMA memory it has not allocated" warnings. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Horia Geanta <horia.geanta@freescale.com> Cc: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index 9722bd2dbc9b..ae4b65e17e64 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -361,7 +361,7 @@ static struct dma_debug_entry *bucket_find_contain(struct hash_bucket **bucket,
unsigned int range = 0;
while (range <= max_range) {
- entry = __hash_bucket_find(*bucket, &index, containing_match);
+ entry = __hash_bucket_find(*bucket, ref, containing_match);
if (entry)
return entry;

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