On Sat, Jan 07, 2017 at 12:15:29PM +0530, Kedareswara rao Appana wrote:

When VDMA is configured for more than one frame in the h/w
for example h/w is configured for n number of frames and user
Submits n number of frames and triggered the DMA using issue_pending API.
In the current driver flow we are submitting one frame at a time
but we should submit all the n number of frames at one time as the h/w
Is configured for n number of frames.

This patch fixes this issue.

Reviewed-by: Jose Abreu <redacted>
Signed-off-by: Kedareswara rao Appana <redacted>
---
Changes for v5:
---> Updated xlnx,fstore-config property to xlnx,fstore-enable
     and updated description as suggested by Rob.
Changes for v4:
---> Add Check for framestore configuration on Transmit case as well
     as suggested by Jose Abreu.
---> Modified the dev_dbg checks to dev_warn checks as suggested
     by Jose Abreu.
Changes for v3:
---> Added Checks for frame store configuration. If frame store
     Configuration is not present at the h/w level and user
     Submits less frames added debug prints in the driver as relevant.
Changes for v2:
---> Fixed race conditions in the driver as suggested by Jose Abreu
---> Fixed unnecessray if else checks in the vdma_start_transfer
     as suggested by Laurent Pinchart.

 .../devicetree/bindings/dma/xilinx/xilinx_dma.txt  |  2 +

Acked-by: Rob Herring <robh@kernel.org>

 drivers/dma/xilinx/xilinx_dma.c                    | 78 +++++++++++++++-------
 2 files changed, 57 insertions(+), 23 deletions(-)