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ARM: 7916/1: amba: Add clk_prepare|unprepare in runtime PM callbacks 

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@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Ulf Hansson 2013-12-09 10:40:22 +01:00 committed by Russell King
parent 89a5c985f8
commit 5303c0f46c
1 changed files with 2 additions and 2 deletions
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4
drivers/amba/bus.c
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@ -95,7 +95,7 @@ static int amba_pm_runtime_suspend(struct device *dev)
int ret = pm_generic_runtime_suspend(dev); int ret = pm_generic_runtime_suspend(dev);
if (ret == 0 && dev->driver) if (ret == 0 && dev->driver)
clk_disable(pcdev->pclk); clk_disable_unprepare(pcdev->pclk);
return ret; return ret;
} }
@ -106,7 +106,7 @@ static int amba_pm_runtime_resume(struct device *dev)
int ret; int ret;
if (dev->driver) { if (dev->driver) {
ret = clk_enable(pcdev->pclk); ret = clk_prepare_enable(pcdev->pclk);
/* Failure is probably fatal to the system, but... */ /* Failure is probably fatal to the system, but... */
if (ret) if (ret)
return ret; return ret;