[PATCH 4.14 137/146] staging: android: ion: Fix dma direction for dma_sync_sg_for_cpu/device

Greg Kroah-Hartman
2018-01-01T14:47:18Z

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);