Commit-ID: e5e8c5b90a1ae249930fcf7403f3757686cf1a7b
Gitweb: http://git.kernel.org/tip/e5e8c5b90a1ae249930fcf7403f3757686cf1a7b
Author: Joerg Roedel <joerg.roedel@xxxxxxx>
AuthorDate: Thu, 11 Jun 2009 10:03:42 +0200
Committer: Joerg Roedel <joerg.roedel@xxxxxxx>
CommitDate: Mon, 15 Jun 2009 11:08:54 +0200
dma-debug: check for sg_call_ents in best-fit algorithm too
If we don't check for sg_call_ents the hash_bucket_find function might
still return the wrong dma_debug_entry for sg mappings.
Signed-off-by: Joerg Roedel <joerg.roedel@xxxxxxx>
---
lib/dma-debug.c | 15 +++++++--------
1 files changed, 7 insertions(+), 8 deletions(-)
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index ad65fc0..c71e2dd 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -262,11 +262,12 @@ static struct dma_debug_entry *hash_bucket_find(struct hash_bucket *bucket,
*/
matches += 1;
match_lvl = 0;
- entry->size == ref->size ? ++match_lvl : match_lvl;
- entry->type == ref->type ? ++match_lvl : match_lvl;
- entry->direction == ref->direction ? ++match_lvl : match_lvl;
+ entry->size == ref->size ? ++match_lvl : 0;
+ entry->type == ref->type ? ++match_lvl : 0;
+ entry->direction == ref->direction ? ++match_lvl : 0;
+ entry->sg_call_ents == ref->sg_call_ents ? ++match_lvl : 0;
- if (match_lvl == 3) {
+ if (match_lvl == 4) {
/* perfect-fit - return the result */
return entry;
} else if (match_lvl > last_lvl) {
@@ -1076,16 +1077,14 @@ void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
.dev_addr = sg_dma_address(s),
.size = sg_dma_len(s),
.direction = dir,
- .sg_call_ents = 0,
+ .sg_call_ents = nelems,
};
if (mapped_ents && i >= mapped_ents)
break;
- if (!i) {
- ref.sg_call_ents = nelems;
+ if (!i)
mapped_ents = get_nr_mapped_entries(dev, s);
- }
check_unmap(&ref);
}
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