dmaengine: fix cyclic dma usage
authorVinod Koul <vinod.koul@linux.intel.com>
Fri, 11 May 2012 06:18:21 +0000 (11:48 +0530)
committerVinod Koul <vinod.koul@linux.intel.com>
Tue, 15 May 2012 03:13:40 +0000 (08:43 +0530)
for cyclic dma, dont makr the descriptor as complte. Fix the remaining users of
cyclic dma which do so

Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
Tested-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Mika Westerberg <mika.westerberg@iki.fi>
drivers/dma/at_hdmac.c
drivers/dma/ep93xx_dma.c

index 445fdf8116959e91bff7469bf45c6283e057b198..bf0d7e4e345bd09babde30dfed59b4874f27b0fc 100644 (file)
@@ -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);
index e6f133b78dc2c89f1144f3b6fd8b4ee100138e5e..f6e9b572b998919ee117cf154e560788da439de3 100644 (file)
@@ -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;