From mboxrd@z Thu Jan 1 00:00:00 1970 From: ulf.hansson@linaro.org (Ulf Hansson) Date: Tue, 3 Dec 2013 11:04:31 +0100 Subject: [PATCH 6/6] amba: Add clk_prepare|unprepare in runtime PM callbacks In-Reply-To: <1386065071-9529-1-git-send-email-ulf.hansson@linaro.org> References: <1386065071-9529-1-git-send-email-ulf.hansson@linaro.org> Message-ID: <1386065071-9529-7-git-send-email-ulf.hansson@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- 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