Commit 7f830642 authored by Robin Murphy's avatar Robin Murphy Committed by Linus Torvalds

dma-debug: check nents in dma_sync_sg*

Like dma_unmap_sg, dma_sync_sg* should be called with the original number
of entries passed to dma_map_sg, so do the same check in the sync path as
we do in the unmap path.
Signed-off-by: default avatarRobin Murphy <robin.murphy@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Sakari Ailus <sakari.ailus@iki.fi>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 002edb6f
...@@ -1249,6 +1249,14 @@ static void check_sync(struct device *dev, ...@@ -1249,6 +1249,14 @@ static void check_sync(struct device *dev,
dir2name[entry->direction], dir2name[entry->direction],
dir2name[ref->direction]); dir2name[ref->direction]);
if (ref->sg_call_ents && ref->type == dma_debug_sg &&
ref->sg_call_ents != entry->sg_call_ents) {
err_printk(ref->dev, entry, "DMA-API: device driver syncs "
"DMA sg list with different entry count "
"[map count=%d] [sync count=%d]\n",
entry->sg_call_ents, ref->sg_call_ents);
}
out: out:
put_hash_bucket(bucket, &flags); put_hash_bucket(bucket, &flags);
} }
......
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