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clocksource: sh_tmu: Add clk_prepare/unprepare support

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Prepare the clock at probe time, as there is no other appropriate place
in the driver where we're allowed to sleep.

Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Laurent Pinchart 2013-11-08 11:08:00 +01:00 committed by Daniel Lezcano
parent 394a4486f0
commit 1c09eb3e2d
1 changed files with 8 additions and 1 deletions
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9
drivers/clocksource/sh_tmu.c
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@ -472,6 +472,11 @@ static int sh_tmu_setup(struct sh_tmu_priv *p, struct platform_device *pdev)
ret = PTR_ERR(p->clk);
goto err1;
}
ret = clk_prepare(p->clk);
if (ret < 0)
goto err2;
p->cs_enabled = false;
p->enable_count = 0;
@ -479,10 +484,12 @@ static int sh_tmu_setup(struct sh_tmu_priv *p, struct platform_device *pdev)
cfg->clockevent_rating,
cfg->clocksource_rating);
if (ret < 0)
goto err2;
goto err3;
return 0;
err3:
clk_unprepare(p->clk);
err2:
clk_put(p->clk);
err1: