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| author | Kedareswara rao Appana <appana.durga.rao@xilinx.com> | 2016-06-09 08:02:12 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2016-06-13 07:41:17 +0200 |
| commit | e167a0b6dc49cb3694fea888560aa462532951dd (patch) | |
| tree | 228357994aee3b57b13b784eb874bf514c3acce4 /drivers | |
| parent | dmaengine: vdma: Use dma_pool_zalloc (diff) | |
| download | linux-e167a0b6dc49cb3694fea888560aa462532951dd.tar.xz linux-e167a0b6dc49cb3694fea888560aa462532951dd.zip | |
dmaengine: vdma: Fix compilation warning in cyclic dma mode
This patch fixes the below compilation warining.
drivers/dma/xilinx/xilinx_vdma.c: In function 'xilinx_dma_prep_dma_cyclic':
drivers/dma/xilinx/xilinx_vdma.c:1808:23: warning: 'segment' may be used
uninitialized in this function [-Wmaybe-uninitialized]
segment->hw.control |= XILINX_DMA_BD_SOP;
The start of packet (SOP) should be set to the first segment in the desc
chain not for the last segment of the desc chain.
Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/dma/xilinx/xilinx_vdma.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/xilinx/xilinx_vdma.c b/drivers/dma/xilinx/xilinx_vdma.c index 0f5b38a0e46f..0af0cf4b5f2e 100644 --- a/drivers/dma/xilinx/xilinx_vdma.c +++ b/drivers/dma/xilinx/xilinx_vdma.c @@ -1805,7 +1805,7 @@ static struct dma_async_tx_descriptor *xilinx_dma_prep_dma_cyclic( /* For the last DMA_MEM_TO_DEV transfer, set EOP */ if (direction == DMA_MEM_TO_DEV) { - segment->hw.control |= XILINX_DMA_BD_SOP; + head_segment->hw.control |= XILINX_DMA_BD_SOP; segment = list_last_entry(&desc->segments, struct xilinx_axidma_tx_segment, node); |