dma-buf: Remove range-based flush
This patch removes range-based information used for optimizations in
begin_cpu_access and end_cpu_access.
We don't have any user nor implementation using range-based flush. It seems a
consensus that if we ever want something like that again (or even more robust
using 2D, 3D sub-range regions) we can use the upcoming dma-buf sync ioctl for
such.
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Tiago Vignatti <tiago.vignatti@intel.com>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1450820214-12509-3-git-send-email-tiago.vignatti@intel.com
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 155c146..b2ac13b 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -539,13 +539,11 @@
* preparations. Coherency is only guaranteed in the specified range for the
* specified access direction.
* @dmabuf: [in] buffer to prepare cpu access for.
- * @start: [in] start of range for cpu access.
- * @len: [in] length of range for cpu access.
* @direction: [in] length of range for cpu access.
*
* Can return negative error values, returns 0 on success.
*/
-int dma_buf_begin_cpu_access(struct dma_buf *dmabuf, size_t start, size_t len,
+int dma_buf_begin_cpu_access(struct dma_buf *dmabuf,
enum dma_data_direction direction)
{
int ret = 0;
@@ -554,8 +552,7 @@
return -EINVAL;
if (dmabuf->ops->begin_cpu_access)
- ret = dmabuf->ops->begin_cpu_access(dmabuf, start,
- len, direction);
+ ret = dmabuf->ops->begin_cpu_access(dmabuf, direction);
return ret;
}
@@ -567,19 +564,17 @@
* actions. Coherency is only guaranteed in the specified range for the
* specified access direction.
* @dmabuf: [in] buffer to complete cpu access for.
- * @start: [in] start of range for cpu access.
- * @len: [in] length of range for cpu access.
* @direction: [in] length of range for cpu access.
*
* This call must always succeed.
*/
-void dma_buf_end_cpu_access(struct dma_buf *dmabuf, size_t start, size_t len,
+void dma_buf_end_cpu_access(struct dma_buf *dmabuf,
enum dma_data_direction direction)
{
WARN_ON(!dmabuf);
if (dmabuf->ops->end_cpu_access)
- dmabuf->ops->end_cpu_access(dmabuf, start, len, direction);
+ dmabuf->ops->end_cpu_access(dmabuf, direction);
}
EXPORT_SYMBOL_GPL(dma_buf_end_cpu_access);