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authorLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>2013-11-08 11:08:00 +0100
committerDaniel Lezcano <daniel.lezcano@linaro.org>2013-11-20 21:55:24 +0100
commit1c09eb3e2d761ffd152faa6b9d06caf560e7d445 (patch)
tree8a80e10999b1e898f1d0619c5bce09eaf9d082ca /drivers
parent394a4486f009a184b58fc2f2435d6f5f800870bb (diff)
downloadlinux-1c09eb3e2d761ffd152faa6b9d06caf560e7d445.tar.gz
clocksource: sh_tmu: Add clk_prepare/unprepare support
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/clocksource/sh_tmu.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/clocksource/sh_tmu.c b/drivers/clocksource/sh_tmu.c
index 15978372c937..63557cda0a7d 100644
--- a/drivers/clocksource/sh_tmu.c
+++ b/drivers/clocksource/sh_tmu.c
@@ -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: