dmaengine: imx-dma: Disable use of hw_chain to fix sg_dma transfers.
HW chaining is currently broken in imx-dma. It can be easily reproduced doing intensive accesses to a external MMC card and checking how the file system is corrupted. Preventing the driver to use HW chaining solves these issues. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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@ -684,9 +684,8 @@ static int imxdma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
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break;
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}
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imxdmac->hw_chaining = 1;
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if (!imxdma_hw_chain(imxdmac))
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return -EINVAL;
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imxdmac->hw_chaining = 0;
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imxdmac->ccr_from_device = (mode | IMX_DMA_TYPE_FIFO) |
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((IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR) << 2) |
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CCR_REN;
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