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dmaengine: ste_dma40: fix pm runtime ref counting

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The pm runtime reference counting of the driver is broken for the case
when there is more than one transfer queued, leading to the device being
runtime suspend while active.  Fix it.

Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Rabin Vincent 2013-05-27 16:03:40 +02:00 committed by Vinod Koul
parent e4aa937ec7
commit 9ecb41bd8c
1 changed files with 5 additions and 3 deletions
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8
drivers/dma/ste_dma40.c
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@ -1566,10 +1566,12 @@ static void dma_tc_handle(struct d40_chan *d40c)
return;
}
if (d40_queue_start(d40c) == NULL)
if (d40_queue_start(d40c) == NULL) {
d40c->busy = false;
pm_runtime_mark_last_busy(d40c->base->dev);
pm_runtime_put_autosuspend(d40c->base->dev);
pm_runtime_mark_last_busy(d40c->base->dev);
pm_runtime_put_autosuspend(d40c->base->dev);
}
d40_desc_remove(d40d);
d40_desc_done(d40c, d40d);