linux-kernel - [PATCH v3 1/3] clk: qcom: lpasscc-sc7810: Use devm in probe

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Date:   Wed, 14 Oct 2020 14:05:21 -0700
From:   Douglas Anderson <dianders@...omium.org>
To:     Stephen Boyd <sboyd@...nel.org>
Cc:     Taniya Das <tdas@...eaurora.org>, linux-soc@...r.kernel.org,
        David Brown <david.brown@...aro.org>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Douglas Anderson <dianders@...omium.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v3 1/3] clk: qcom: lpasscc-sc7810: Use devm in probe

Let's convert the lpass clock control driver to use devm.  This is a
few more lines of code, but it will be useful in a later patch which
disentangles the two devices handled by this driver.

Signed-off-by: Douglas Anderson <dianders@...omium.org>
---

Changes in v3:
- ("clk: qcom: lpasscc-sc7810: Use devm in probe") new for v3.

 drivers/clk/qcom/lpasscorecc-sc7180.c | 38 +++++++++++++++------------
 1 file changed, 21 insertions(+), 17 deletions(-)

diff --git a/drivers/clk/qcom/lpasscorecc-sc7180.c b/drivers/clk/qcom/lpasscorecc-sc7180.c
index 228d08f5d26f..abcf36006926 100644
--- a/drivers/clk/qcom/lpasscorecc-sc7180.c
+++ b/drivers/clk/qcom/lpasscorecc-sc7180.c
@@ -412,40 +412,44 @@ static const struct of_device_id lpass_core_cc_sc7180_match_table[] = {
 };
 MODULE_DEVICE_TABLE(of, lpass_core_cc_sc7180_match_table);
 
+static void lpass_pm_runtime_disable(void *data)
+{
+	pm_runtime_disable(data);
+}
+
+static void lapss_pm_clk_destroy(void *data)
+{
+	pm_clk_destroy(data);
+}
+
 static int lpass_core_sc7180_probe(struct platform_device *pdev)
 {
 	int (*clk_probe)(struct platform_device *p);
 	int ret;
 
 	pm_runtime_enable(&pdev->dev);
+	ret = devm_add_action_or_reset(&pdev->dev, lpass_pm_runtime_disable, &pdev->dev);
+	if (ret)
+		return ret;
+
 	ret = pm_clk_create(&pdev->dev);
 	if (ret)
-		goto disable_pm_runtime;
+		return ret;
+	ret = devm_add_action_or_reset(&pdev->dev, lapss_pm_clk_destroy, &pdev->dev);
+	if (ret)
+		return ret;
 
 	ret = pm_clk_add(&pdev->dev, "iface");
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to acquire iface clock\n");
-		goto destroy_pm_clk;
+		return ret;
 	}
 
-	ret = -EINVAL;
 	clk_probe = of_device_get_match_data(&pdev->dev);
 	if (!clk_probe)
-		goto destroy_pm_clk;
-
-	ret = clk_probe(pdev);
-	if (ret)
-		goto destroy_pm_clk;
-
-	return 0;
-
-destroy_pm_clk:
-	pm_clk_destroy(&pdev->dev);
-
-disable_pm_runtime:
-	pm_runtime_disable(&pdev->dev);
+		return -EINVAL;
 
-	return ret;
+	return clk_probe(pdev);
 }
 
 static const struct dev_pm_ops lpass_core_cc_pm_ops = {
-- 
2.28.0.1011.ga647a8990f-goog