linux-kernel - [PATCH v2] staging: android: ion: Initialize dma

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Message-ID: <alpine.DEB.2.02.1802161215480.14464@lmark-linux.qualcomm.com>
Date:   Fri, 16 Feb 2018 12:19:22 -0800 (PST)
From:   Liam Mark <lmark@...eaurora.org>
To:     Laura Abbott <labbott@...hat.com>,
        Sumit Semwal <sumit.semwal@...aro.org>
cc:     Dan Carpenter <dan.carpenter@...cle.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
        linaro-mm-sig@...ts.linaro.org
Subject: [PATCH v2] staging: android: ion: Initialize dma_address of new sg
 list

Fix the dup_sg_table function to initialize the dma_address of the new
sg list entries instead of the source dma_address entries.

Since ION duplicates the sg_list this issue does not appear to result in
an actual bug.

Signed-off-by: Liam Mark <lmark@...eaurora.org>
Acked-by: Laura Abbott <labbott@...hat.com>
---
Changes in v2:
  - Add to commit message that it doesn't cause an actual bug
  - Remove 'Fixes:' since it doesn't cause a bug
  - Add Acked-by from Laura Abbott

 drivers/staging/android/ion/ion.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index 57e0d8035b2e..517d4f40d1b7 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -187,7 +187,7 @@ static struct sg_table *dup_sg_table(struct sg_table *table)
 	new_sg = new_table->sgl;
 	for_each_sg(table->sgl, sg, table->nents, i) {
 		memcpy(new_sg, sg, sizeof(*sg));
-		sg->dma_address = 0;
+		new_sg->dma_address = 0;
 		new_sg = sg_next(new_sg);
 	}
 
-- 
1.8.5.2


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