From 60f2951e3ad9b833bc12e2ea7652be2611771792 Mon Sep 17 00:00:00 2001 From: Vinod Koul Date: Fri, 20 Apr 2012 15:28:07 +0530 Subject: [PATCH] dmaengine: imx-dma: dont complete descriptor for cyclic dma the cookie updates completed the cyclic dma descriptor wrongly. This caused the BUG_ON to be hit as submit is called for completed descriptor Fix this by not marking the cyclic descriptor as complete Tested-by: Javier Martin Signed-off-by: Vinod Koul --- drivers/dma/imx-dma.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c index a45b5d2a5987..bb787d8e1529 100644 --- a/drivers/dma/imx-dma.c +++ b/drivers/dma/imx-dma.c @@ -571,11 +571,14 @@ static void imxdma_tasklet(unsigned long data) if (desc->desc.callback) desc->desc.callback(desc->desc.callback_param); - dma_cookie_complete(&desc->desc); - - /* If we are dealing with a cyclic descriptor keep it on ld_active */ + /* If we are dealing with a cyclic descriptor keep it on ld_active + * and dont mark the descripor as complete. + * Only in non-cyclic cases it would be marked as complete + */ if (imxdma_chan_is_doing_cyclic(imxdmac)) goto out; + else + dma_cookie_complete(&desc->desc); /* Free 2D slot if it was an interleaved transfer */ if (imxdmac->enabled_2d) { -- 2.20.1