Commit 7f830642 authored Nov 06, 2015 by Robin Murphy Committed by Linus Torvalds Nov 06, 2015

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: Robin 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: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 002edb6f

lib/dma-debug.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -1249,6 +1249,14 @@ static void check_sync(struct device *dev,
		dir2name[entry->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:
		put_hash_bucket(bucket, &flags);
		}

Admin message