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authorRabin Vincent <rabin.vincent@stericsson.com>2013-05-27 18:03:40 +0400
committerVinod Koul <vinod.koul@intel.com>2013-05-27 18:20:32 +0400
commit9ecb41bd8cf002fd8f3e063db4df81647ddd623c (patch)
treee20ce03e504fad666359c65fb9224d806c4c6fad
parente4aa937ec75df0eea0bee03bffa3303ad36c986b (diff)
downloadlinux-9ecb41bd8cf002fd8f3e063db4df81647ddd623c.tar.xz
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>
-rw-r--r--drivers/dma/ste_dma40.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 1734feec47b1..71bf4ec300ea 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);