From: Vinod Koul Date: Fri, 11 May 2012 06:18:21 +0000 (+0530) Subject: dmaengine: fix cyclic dma usage X-Git-Tag: v3.4~16^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d41160524d8d8ee721296e5c7e15f1ed727df7eb;p=platform%2Fkernel%2Flinux-exynos.git dmaengine: fix cyclic dma usage for cyclic dma, dont makr the descriptor as complte. Fix the remaining users of cyclic dma which do so Signed-off-by: Vinod Koul Tested-by: Nicolas Ferre Acked-by: Nicolas Ferre Tested-by: Mika Westerberg --- diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c index 445fdf8..bf0d7e4 100644 --- a/drivers/dma/at_hdmac.c +++ b/drivers/dma/at_hdmac.c @@ -245,7 +245,9 @@ atc_chain_complete(struct at_dma_chan *atchan, struct at_desc *desc) dev_vdbg(chan2dev(&atchan->chan_common), "descriptor %u complete\n", txd->cookie); - dma_cookie_complete(txd); + /* mark the descriptor as complete for non cyclic cases only */ + if (!atc_chan_is_cyclic(atchan)) + dma_cookie_complete(txd); /* move children to free_list */ list_splice_init(&desc->tx_list, &atchan->free_list); diff --git a/drivers/dma/ep93xx_dma.c b/drivers/dma/ep93xx_dma.c index e6f133b..f6e9b57 100644 --- a/drivers/dma/ep93xx_dma.c +++ b/drivers/dma/ep93xx_dma.c @@ -703,7 +703,9 @@ static void ep93xx_dma_tasklet(unsigned long data) desc = ep93xx_dma_get_active(edmac); if (desc) { if (desc->complete) { - dma_cookie_complete(&desc->txd); + /* mark descriptor complete for non cyclic case only */ + if (!test_bit(EP93XX_DMA_IS_CYCLIC, &edmac->flags)) + dma_cookie_complete(&desc->txd); list_splice_init(&edmac->active, &list); } callback = desc->txd.callback;