dmaengine: xilinx: vdma: Allow only one chunk in a line

This patch adds a sanity check to see if frame_size is 1.

Signed-off-by: Srikanth Thokala <sthokal@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/dma/xilinx/xilinx_vdma.c b/drivers/dma/xilinx/xilinx_vdma.c
index 10937945a527..3d3f70dd9dea 100644
--- a/drivers/dma/xilinx/xilinx_vdma.c
+++ b/drivers/dma/xilinx/xilinx_vdma.c
@@ -942,6 +942,9 @@ xilinx_vdma_dma_prep_interleaved(struct dma_chan *dchan,
         if (!xt->numf || !xt->sgl[0].size)
                 return NULL;
 
+        if (xt->frame_size != 1)
+                return NULL;
+
         /* Allocate a transaction descriptor. */
         desc = xilinx_vdma_alloc_tx_descriptor(chan);
         if (!desc)