spi/pl022: Activate resourses before deactivate them in suspend

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>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index a9106c9..c220c23 100644 (file)
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c
@@ -2349,6 +2349,8 @@ 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");
@@ -2361,6 +2363,7 @@ 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);