Patch "staging: android: ion: Fix dma direction for dma_sync_sg_for_cpu/device" has been added to the 4.14-stable tree

Patch "staging: android: ion: Fix dma direction for dma_sync_sg_for_cpu/device" has been added to the 4.14-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    staging: android: ion: Fix dma direction for dma_sync_sg_for_cpu/device

to the 4.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     staging-android-ion-fix-dma-direction-for-dma_sync_sg_for_cpu-device.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From d6b246bb7a29703f53aa4c050b8b3205d749caee Mon Sep 17 00:00:00 2001
From: Sushmita Susheelendra <ssusheel@codeaurora.org>
Date: Fri, 15 Dec 2017 13:59:13 -0700
Subject: staging: android: ion: Fix dma direction for dma_sync_sg_for_cpu/device

From: Sushmita Susheelendra <ssusheel@codeaurora.org>

commit d6b246bb7a29703f53aa4c050b8b3205d749caee upstream.

Use the direction argument passed into begin_cpu_access
and end_cpu_access when calling the dma_sync_sg_for_cpu/device.
The actual cache primitive called depends on the direction
passed in.

Signed-off-by: Sushmita Susheelendra <ssusheel@codeaurora.org>
Acked-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/staging/android/ion/ion.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -348,7 +348,7 @@ static int ion_dma_buf_begin_cpu_access(
 	mutex_lock(&buffer->lock);
 	list_for_each_entry(a, &buffer->attachments, list) {
 		dma_sync_sg_for_cpu(a->dev, a->table->sgl, a->table->nents,
-				    DMA_BIDIRECTIONAL);
+				    direction);
 	}
 	mutex_unlock(&buffer->lock);
 
@@ -370,7 +370,7 @@ static int ion_dma_buf_end_cpu_access(st
 	mutex_lock(&buffer->lock);
 	list_for_each_entry(a, &buffer->attachments, list) {
 		dma_sync_sg_for_device(a->dev, a->table->sgl, a->table->nents,
-				       DMA_BIDIRECTIONAL);
+				       direction);
 	}
 	mutex_unlock(&buffer->lock);
 


Patches currently in stable-queue which might be from ssusheel@codeaurora.org are

queue-4.14/staging-android-ion-fix-dma-direction-for-dma_sync_sg_for_cpu-device.patch