[PATCH 6/6] amba: Add clk_prepare|unprepare in runtime PM callbacks
Ulf Hansson
ulf.hansson at linaro.org
Tue Dec 3 05:04:31 EST 2013
To fully gate the clock and thus potentially also save more power in
runtime suspend state, extend clock handling with clk_prepare|unprepare
in the runtime PM callbacks.
Signed-off-by: Ulf Hansson <ulf.hansson at linaro.org>
---
drivers/amba/bus.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index 0477131..4cee15a 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -95,7 +95,7 @@ static int amba_pm_runtime_suspend(struct device *dev)
int ret = pm_generic_runtime_suspend(dev);
if (ret == 0 && dev->driver)
- clk_disable(pcdev->pclk);
+ clk_disable_unprepare(pcdev->pclk);
return ret;
}
@@ -106,7 +106,7 @@ static int amba_pm_runtime_resume(struct device *dev)
int ret;
if (dev->driver) {
- ret = clk_enable(pcdev->pclk);
+ ret = clk_prepare_enable(pcdev->pclk);
/* Failure is probably fatal to the system, but... */
if (ret)
return ret;
--
1.7.9.5
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