linux-kernel - [PATCH 25/31] memory: tegra30: convert to use devm_pm_opp

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Message-Id: <20210103035415.23600-1-tiny.windzz@gmail.com>
Date:   Sun,  3 Jan 2021 03:54:15 +0000
From:   Yangtao Li <tiny.windzz@...il.com>
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Subject: [PATCH 25/31] memory: tegra30: convert to use devm_pm_opp_* API

Use devm_pm_opp_* API to simplify code.

Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
---
 drivers/memory/tegra/tegra30-emc.c | 29 +++++++++--------------------
 1 file changed, 9 insertions(+), 20 deletions(-)

diff --git a/drivers/memory/tegra/tegra30-emc.c b/drivers/memory/tegra/tegra30-emc.c
index 44ac155936aa..a93d8c3629fe 100644
--- a/drivers/memory/tegra/tegra30-emc.c
+++ b/drivers/memory/tegra/tegra30-emc.c
@@ -1483,31 +1483,31 @@ static int tegra_emc_interconnect_init(struct tegra_emc *emc)
 static int tegra_emc_opp_table_init(struct tegra_emc *emc)
 {
 	u32 hw_version = BIT(tegra_sku_info.soc_speedo_id);
-	struct opp_table *clk_opp_table, *hw_opp_table;
+	struct opp_table *opp_table;
 	int err;
 
-	clk_opp_table = dev_pm_opp_set_clkname(emc->dev, NULL);
-	err = PTR_ERR_OR_ZERO(clk_opp_table);
+	opp_table = devm_pm_opp_set_clkname(emc->dev, NULL);
+	err = PTR_ERR_OR_ZERO(opp_table);
 	if (err) {
 		dev_err(emc->dev, "failed to set OPP clk: %d\n", err);
 		return err;
 	}
 
-	hw_opp_table = dev_pm_opp_set_supported_hw(emc->dev, &hw_version, 1);
-	err = PTR_ERR_OR_ZERO(hw_opp_table);
+	opp_table = devm_pm_opp_set_supported_hw(emc->dev, &hw_version, 1);
+	err = PTR_ERR_OR_ZERO(opp_table);
 	if (err) {
 		dev_err(emc->dev, "failed to set OPP supported HW: %d\n", err);
-		goto put_clk_table;
+		return err;
 	}
 
-	err = dev_pm_opp_of_add_table(emc->dev);
+	err = devm_pm_opp_of_add_table(emc->dev);
 	if (err) {
 		if (err == -ENODEV)
 			dev_err(emc->dev, "OPP table not found, please update your device tree\n");
 		else
 			dev_err(emc->dev, "failed to add OPP table: %d\n", err);
 
-		goto put_hw_table;
+		return err;
 	}
 
 	dev_info(emc->dev, "OPP HW ver. 0x%x, current clock rate %lu MHz\n",
@@ -1515,19 +1515,8 @@ static int tegra_emc_opp_table_init(struct tegra_emc *emc)
 
 	/* first dummy rate-set initializes voltage state */
 	err = dev_pm_opp_set_rate(emc->dev, clk_get_rate(emc->clk));
-	if (err) {
+	if (err)
 		dev_err(emc->dev, "failed to initialize OPP clock: %d\n", err);
-		goto remove_table;
-	}
-
-	return 0;
-
-remove_table:
-	dev_pm_opp_of_remove_table(emc->dev);
-put_hw_table:
-	dev_pm_opp_put_supported_hw(hw_opp_table);
-put_clk_table:
-	dev_pm_opp_put_clkname(clk_opp_table);
 
 	return err;
 }
-- 
2.25.1