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 <[email protected]> --- lib/dma-debug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/lib/dma-debug.c +++ b/lib/dma-debug.c @@ -361,7 +361,7 @@ static struct dma_debug_entry *bucket_fi 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; -- 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/
