From: Dongli Zhang <dongli.zhang@oracle.com>
To: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Cc: konrad.wilk@oracle.com, hch@lst.de, m.szyprowski@samsung.com,
robin.murphy@arm.com, dongli.zhang@oracle.com
Subject: [PATCH 1/1] swiotlb: fix comment on swiotlb_bounce()
Date: Thu, 6 Dec 2018 12:17:56 +0800 [thread overview]
Message-ID: <1544069876-21185-1-git-send-email-dongli.zhang@oracle.com> (raw)
Fix the comment as swiotlb_bounce() is used to copy from original dma
location to swiotlb buffer during swiotlb_tbl_map_single(), while to
copy from swiotlb buffer to original dma location during
swiotlb_tbl_unmap_single().
Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
---
kernel/dma/swiotlb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 045930e..0a5ec94 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -389,7 +389,7 @@ static int is_swiotlb_buffer(phys_addr_t paddr)
}
/*
- * Bounce: copy the swiotlb buffer back to the original dma location
+ * Bounce: copy the swiotlb buffer from or back to the original dma location
*/
static void swiotlb_bounce(phys_addr_t orig_addr, phys_addr_t tlb_addr,
size_t size, enum dma_data_direction dir)
--
2.7.4
next reply other threads:[~2018-12-06 4:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-06 4:17 Dongli Zhang [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-08-28 7:46 Dongli Zhang
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