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[3/4] spi/pl022: Activate resourses before deactivate them in suspend

Message ID 1350476836-13128-1-git-send-email-linus.walleij@stericsson.com
State New
Headers show

Commit Message

Linus Walleij Oct. 17, 2012, 12:27 p.m. UTC 
From: Ulf Hansson <ulf.hansson@linaro.org>

To be able to deactivate resourses in suspend, the resourses must
first be surely active. This is done with a pm_runtime_get_sync.
Once the resourses are restored to active state again in resume,
the runtime pm usage count can be decreased with a pm_runtime_put.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 drivers/spi/spi-pl022.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index 51b7a95..51329b2 100644
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c
@@ -2346,6 +2346,8 @@  static int pl022_suspend(struct device *dev)
 		dev_warn(dev, "cannot suspend master\n");
 		return ret;
 	}
+
+	pm_runtime_get_sync(dev);
 	pl022_suspend_resources(pl022);
 
 	dev_dbg(dev, "suspended\n");
@@ -2358,6 +2360,7 @@  static int pl022_resume(struct device *dev)
 	int ret;
 
 	pl022_resume_resources(pl022);
+	pm_runtime_put(dev);
 
 	/* Start the queue running */
 	ret = spi_master_resume(pl022->master);