From 3e4d1280a94d81a1ed6110d44daa83d9a9cdcdec Mon Sep 17 00:00:00 2001 From: Rabin Vincent Date: Mon, 27 May 2013 16:03:40 +0200 Subject: [PATCH] dmaengine: ste_dma40: fix pm runtime ref counting commit 9ecb41bd8cf002fd8f3e063db4df81647ddd623c upstream. 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 Acked-by: Linus Walleij Signed-off-by: Vinod Koul Signed-off-by: Greg Kroah-Hartman --- drivers/dma/ste_dma40.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 1734feec47b13..71bf4ec300ea5 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -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); -- 2.47.2