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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>
hifive-unleashed-5.1
Robin Murphy 2015-11-06 16:32:55 -08:00 committed by Linus Torvalds
parent 002edb6f6f
commit 7f8306429c
1 changed files with 8 additions and 0 deletions
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8
lib/dma-debug.c
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@ -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);
}