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Commit 9ecb41bd authored by Rabin Vincent's avatar Rabin Vincent Committed by Vinod Koul
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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: default avatarRabin Vincent <rabin.vincent@stericsson.com>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarVinod 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);