summaryrefslogtreecommitdiff
path: root/drivers/dma/xilinx
diff options
context:
space:
mode:
authorSrikanth Thokala <srikanth.thokala@xilinx.com>2014-11-05 21:37:01 +0300
committerVinod Koul <vinod.koul@intel.com>2014-11-06 10:41:47 +0300
commita5e48e243be8073d34524a824fe354d2f2e1fa24 (patch)
treed4fbb7be95483361232109ea282e1ff04d619904 /drivers/dma/xilinx
parent049c0d577d63c6a95edd5f59fa192f89f2674a64 (diff)
downloadlinux-a5e48e243be8073d34524a824fe354d2f2e1fa24.tar.xz
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>
Diffstat (limited to 'drivers/dma/xilinx')
-rw-r--r--drivers/dma/xilinx/xilinx_vdma.c3
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)