[PATCH] pwm: sifive: Simplify using devm_clk_get_prepared()

[Uwe Kleine-König]

Instead of preparing the clk after it was requested and unpreparing in
.probe()'s error path and .remove(), use devm_clk_get_prepared() which
copes for unpreparing automatically.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
---
 drivers/pwm/pwm-sifive.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/pwm/pwm-sifive.c b/drivers/pwm/pwm-sifive.c
index 5b0574f635f6..ae49d67ab2b1 100644
--- a/drivers/pwm/pwm-sifive.c
+++ b/drivers/pwm/pwm-sifive.c
@@ -244,12 +244,12 @@ static int pwm_sifive_probe(struct platform_device *pdev)
 	if (IS_ERR(ddata->regs))
 		return PTR_ERR(ddata->regs);
 
-	ddata->clk = devm_clk_get(dev, NULL);
+	ddata->clk = devm_clk_get_prepared(dev, NULL);
 	if (IS_ERR(ddata->clk))
 		return dev_err_probe(dev, PTR_ERR(ddata->clk),
 				     "Unable to find controller clock\n");
 
-	ret = clk_prepare_enable(ddata->clk);
+	ret = clk_enable(ddata->clk);
 	if (ret) {
 		dev_err(dev, "failed to enable clock for pwm: %d\n", ret);
 		return ret;
@@ -308,7 +308,6 @@ static int pwm_sifive_probe(struct platform_device *pdev)
 		clk_disable(ddata->clk);
 		--enabled_clks;
 	}
-	clk_unprepare(ddata->clk);
 
 	return ret;
 }
@@ -327,8 +326,6 @@ static void pwm_sifive_remove(struct platform_device *dev)
 		if (pwm->state.enabled)
 			clk_disable(ddata->clk);
 	}
-
-	clk_unprepare(ddata->clk);
 }
 
 static const struct of_device_id pwm_sifive_of_match[] = {

base-commit: 247ee6c780406513c6031a7f4ea41f1648b03295
-- 
2.39.2