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| author | Matthew Murrian <matthew.murrian@goctsi.com> | 2020-11-04 08:00:06 +0100 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-11-09 13:24:22 +0100 |
| commit | 96d5d884f78306206d745d856aad322becd100c3 (patch) | |
| tree | b3b4f09175e09031338b1a7e42aedbcf353e45c0 /drivers/dma/xilinx | |
| parent | dmaengine: xilinx_dma: Fix usage of xilinx_aximcdma_tx_segment (diff) | |
| download | linux-96d5d884f78306206d745d856aad322becd100c3.tar.xz linux-96d5d884f78306206d745d856aad322becd100c3.zip | |
dmaengine: xilinx_dma: Fix SG capability check for MCDMA
The SG capability is inherently present with Multichannel DMA operation.
The register used to check for this capability with other DMA driver types
is not defined for MCDMA.
Fixes: 6ccd692bfb7f ("dmaengine: xilinx_dma: Add Xilinx AXI MCDMA Engine driver support")
Signed-off-by: Matthew Murrian <matthew.murrian@goctsi.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Link: https://lore.kernel.org/r/1604473206-32573-4-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/xilinx')
| -rw-r--r-- | drivers/dma/xilinx/xilinx_dma.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index 9fd924cf2337..22faea653ea8 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -2855,10 +2855,11 @@ static int xilinx_dma_chan_probe(struct xilinx_dma_device *xdev, chan->stop_transfer = xilinx_dma_stop_transfer; } - /* check if SG is enabled (only for AXIDMA and CDMA) */ + /* check if SG is enabled (only for AXIDMA, AXIMCDMA, and CDMA) */ if (xdev->dma_config->dmatype != XDMA_TYPE_VDMA) { - if (dma_ctrl_read(chan, XILINX_DMA_REG_DMASR) & - XILINX_DMA_DMASR_SG_MASK) + if (xdev->dma_config->dmatype == XDMA_TYPE_AXIMCDMA || + dma_ctrl_read(chan, XILINX_DMA_REG_DMASR) & + XILINX_DMA_DMASR_SG_MASK) chan->has_sg = true; dev_dbg(chan->dev, "ch %d: SG %s\n", chan->id, chan->has_sg ? "enabled" : "disabled"); |