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

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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>
This commit is contained in:
Srikanth Thokala 2014-11-05 20:37:01 +02:00 • committed by Vinod Koul
parent 049c0d577d
commit a5e48e243b
1 changed files with 3 additions and 0 deletions
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3
drivers/dma/xilinx/xilinx_vdma.c
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@ -942,6 +942,9 @@ xilinx_vdma_dma_prep_interleaved(struct dma_chan *dchan,
if (!xt->numf || !xt->sgl[0].size) if (!xt->numf || !xt->sgl[0].size)
return NULL; return NULL;
if (xt->frame_size != 1)
return NULL;
/* Allocate a transaction descriptor. */ /* Allocate a transaction descriptor. */
desc = xilinx_vdma_alloc_tx_descriptor(chan); desc = xilinx_vdma_alloc_tx_descriptor(chan);
if (!desc) if (!desc)