Ludovic Desroches d202f05158 dmaengine: at_hdmac: fix race condition in atc_advance_work() ...

The BUG_ON() directive is triggered probably due to a latency
modification following inclusion of commit c10d73671a ("softirq:
reduce latencies").  This condition has not been met before 3.9-rc1 and
doesn't trigger without this patch.

We now make sure that DMA channel is idle before calling
atc_complete_all() which makes the BUG_ON() "protection" useless.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2013-04-18 08:54:22 -07:00

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bestcomm

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ioat

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ipu

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ppc4xx

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sh

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amba-pl08x.c

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at_hdmac_regs.h

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at_hdmac.c

dmaengine: at_hdmac: fix race condition in atc_advance_work()

2013-04-18 08:54:22 -07:00

coh901318_lli.c

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coh901318.c

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coh901318.h

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dmaengine.c

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dmaengine.h

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dmatest.c

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dw_dmac_regs.h

dw_dmac: adjust slave_id accordingly to request line base

2013-03-30 04:34:07 +05:30

dw_dmac.c

dw_dmac: adjust slave_id accordingly to request line base

2013-03-30 04:34:07 +05:30

edma.c

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ep93xx_dma.c

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fsldma.c

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fsldma.h

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imx-dma.c

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imx-sdma.c

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intel_mid_dma_regs.h

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intel_mid_dma.c

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iop-adma.c

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iovlock.c

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Kconfig

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Makefile

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mmp_pdma.c

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mmp_tdma.c

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mpc512x_dma.c

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mv_xor.c

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mv_xor.h

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mxs-dma.c

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of-dma.c

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omap-dma.c

dmaengine: omap-dma: Start DMA without delay for cyclic channels

2013-04-10 10:33:30 +05:30

pch_dma.c

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pl330.c

DMA: PL330: Add check if device tree compatible

2013-04-02 23:11:04 +05:30

sa11x0-dma.c

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sirf-dma.c

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ste_dma40_ll.c

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ste_dma40_ll.h

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ste_dma40.c

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tegra20-apb-dma.c

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timb_dma.c

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TODO

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txx9dmac.c

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txx9dmac.h

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virt-dma.c

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virt-dma.h

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