linux-kernel - [PATCH] staging: android: ion: Set the length of the DMA sg entries in buffer

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Message-ID: <1453377467.2858.14.camel@linaro.org>
Date:	Thu, 21 Jan 2016 11:57:47 +0000
From:	"Jon Medhurst (Tixy)" <tixy@...aro.org>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Arve Hjønnevåg <arve@...roid.com>,
	Riley Andrews <riandrews@...roid.com>
Cc:	Liviu Dudau <Liviu.Dudau@....com>,
	Laura Abbott <labbott@...hat.com>, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] staging: android: ion: Set the length of the DMA sg entries
 in buffer

From: Liviu Dudau <Liviu.Dudau@....com>

ion_buffer_create() will allocate a buffer and then create a DMA
mapping for it, but it forgot to set the length of the page entries.

Signed-off-by: Liviu Dudau <Liviu.Dudau@....com>
Signed-off-by: Jon Medhurst <tixy@...aro.org>
---
 drivers/staging/android/ion/ion.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index e237e9f..df56021 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -251,8 +251,10 @@ static struct ion_buffer *ion_buffer_create(struct ion_heap *heap,
 	 * memory coming from the heaps is ready for dma, ie if it has a
 	 * cached mapping that mapping has been invalidated
 	 */
-	for_each_sg(buffer->sg_table->sgl, sg, buffer->sg_table->nents, i)
+	for_each_sg(buffer->sg_table->sgl, sg, buffer->sg_table->nents, i) {
 		sg_dma_address(sg) = sg_phys(sg);
+		sg_dma_len(sg) = sg->length;
+	}
 	mutex_lock(&dev->buffer_lock);
 	ion_buffer_add(dev, buffer);
 	mutex_unlock(&dev->buffer_lock);
-- 
2.1.4