diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-05-09 07:47:14 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-05-09 07:58:48 -0300 |
commit | a5cdf7364020a61375af3c8aa23e09181f5c2c6c (patch) | |
tree | 6a7aacf0e34c69ae57200ba59eafda251b3e0e80 /drivers/dma/omap-dma.c | |
parent | 394569928e2f17dff4ae367ac700048138e318c7 (diff) |
Linux-libre 4.5.3-gnupck-4.5.3-gnu
Diffstat (limited to 'drivers/dma/omap-dma.c')
-rw-r--r-- | drivers/dma/omap-dma.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c index 9794b073d..a5ed9407c 100644 --- a/drivers/dma/omap-dma.c +++ b/drivers/dma/omap-dma.c @@ -48,6 +48,7 @@ struct omap_chan { unsigned dma_sig; bool cyclic; bool paused; + bool running; int dma_ch; struct omap_desc *desc; @@ -294,6 +295,8 @@ static void omap_dma_start(struct omap_chan *c, struct omap_desc *d) /* Enable channel */ omap_dma_chan_write(c, CCR, d->ccr | CCR_ENABLE); + + c->running = true; } static void omap_dma_stop(struct omap_chan *c) @@ -355,6 +358,8 @@ static void omap_dma_stop(struct omap_chan *c) omap_dma_chan_write(c, CLNK_CTRL, val); } + + c->running = false; } static void omap_dma_start_sg(struct omap_chan *c, struct omap_desc *d, @@ -673,15 +678,20 @@ static enum dma_status omap_dma_tx_status(struct dma_chan *chan, struct omap_chan *c = to_omap_dma_chan(chan); struct virt_dma_desc *vd; enum dma_status ret; - uint32_t ccr; unsigned long flags; - ccr = omap_dma_chan_read(c, CCR); - /* The channel is no longer active, handle the completion right away */ - if (!(ccr & CCR_ENABLE)) - omap_dma_callback(c->dma_ch, 0, c); - ret = dma_cookie_status(chan, cookie, txstate); + + if (!c->paused && c->running) { + uint32_t ccr = omap_dma_chan_read(c, CCR); + /* + * The channel is no longer active, set the return value + * accordingly + */ + if (!(ccr & CCR_ENABLE)) + ret = DMA_COMPLETE; + } + if (ret == DMA_COMPLETE || !txstate) return ret; |