Commit 9ecb41bd authored May 27, 2013 by Rabin Vincent Committed by Vinod Koul May 27, 2013

dmaengine: ste_dma40: fix pm runtime ref counting



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>

parent e4aa937e

drivers/dma/ste_dma40.c

+5 −3

Original line number	Diff line number	Diff line
		@@ -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);
		}

		d40_desc_remove(d40d);
		d40_desc_done(d40c, d40d);

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