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Date: Tue, 1 Sep 2015 01:05:30 +0800
From: Bai Ping <b51503@...escale.com>
To: <rjw@...ysocki.net>, <viresh.kumar@...aro.org>
CC: <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] cpufreq: imx: use the managed interfaces for resources allocation
Replace the clk_get() and regulator_get() with the managed interfaces
then the error path can be simplified.
Signed-off-by: Bai Ping <b51503@...escale.com>
---
drivers/cpufreq/imx6q-cpufreq.c | 52 +++++++++++------------------------------
1 file changed, 13 insertions(+), 39 deletions(-)
diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c
index 380a90d..1439f93 100644
--- a/drivers/cpufreq/imx6q-cpufreq.c
+++ b/drivers/cpufreq/imx6q-cpufreq.c
@@ -174,25 +174,25 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
return -ENOENT;
}
- arm_clk = clk_get(cpu_dev, "arm");
- pll1_sys_clk = clk_get(cpu_dev, "pll1_sys");
- pll1_sw_clk = clk_get(cpu_dev, "pll1_sw");
- step_clk = clk_get(cpu_dev, "step");
- pll2_pfd2_396m_clk = clk_get(cpu_dev, "pll2_pfd2_396m");
+ arm_clk = devm_clk_get(cpu_dev, "arm");
+ pll1_sys_clk = devm_clk_get(cpu_dev, "pll1_sys");
+ pll1_sw_clk = devm_clk_get(cpu_dev, "pll1_sw");
+ step_clk = devm_clk_get(cpu_dev, "step");
+ pll2_pfd2_396m_clk = devm_clk_get(cpu_dev, "pll2_pfd2_396m");
if (IS_ERR(arm_clk) || IS_ERR(pll1_sys_clk) || IS_ERR(pll1_sw_clk) ||
IS_ERR(step_clk) || IS_ERR(pll2_pfd2_396m_clk)) {
dev_err(cpu_dev, "failed to get clocks\n");
ret = -ENOENT;
- goto put_clk;
+ goto put_node;
}
- arm_reg = regulator_get(cpu_dev, "arm");
- pu_reg = regulator_get_optional(cpu_dev, "pu");
- soc_reg = regulator_get(cpu_dev, "soc");
+ arm_reg = devm_regulator_get(cpu_dev, "arm");
+ pu_reg = devm_regulator_get_optional(cpu_dev, "pu");
+ soc_reg = devm_regulator_get(cpu_dev, "soc");
if (IS_ERR(arm_reg) || IS_ERR(soc_reg)) {
dev_err(cpu_dev, "failed to get regulators\n");
ret = -ENOENT;
- goto put_reg;
+ goto put_node;
}
/*
@@ -205,7 +205,7 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
ret = of_init_opp_table(cpu_dev);
if (ret < 0) {
dev_err(cpu_dev, "failed to init OPP table: %d\n", ret);
- goto put_reg;
+ goto put_node;
}
/* Because we have added the OPPs here, we must free them */
@@ -222,7 +222,7 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table);
if (ret) {
dev_err(cpu_dev, "failed to init cpufreq table: %d\n", ret);
- goto put_reg;
+ goto out_free_opp;
}
/* Make imx6_soc_volt array's size same as arm opp number */
@@ -313,24 +313,7 @@ free_freq_table:
out_free_opp:
if (free_opp)
of_free_opp_table(cpu_dev);
-put_reg:
- if (!IS_ERR(arm_reg))
- regulator_put(arm_reg);
- if (!IS_ERR(pu_reg))
- regulator_put(pu_reg);
- if (!IS_ERR(soc_reg))
- regulator_put(soc_reg);
-put_clk:
- if (!IS_ERR(arm_clk))
- clk_put(arm_clk);
- if (!IS_ERR(pll1_sys_clk))
- clk_put(pll1_sys_clk);
- if (!IS_ERR(pll1_sw_clk))
- clk_put(pll1_sw_clk);
- if (!IS_ERR(step_clk))
- clk_put(step_clk);
- if (!IS_ERR(pll2_pfd2_396m_clk))
- clk_put(pll2_pfd2_396m_clk);
+put_node:
of_node_put(np);
return ret;
}
@@ -341,15 +324,6 @@ static int imx6q_cpufreq_remove(struct platform_device *pdev)
dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table);
if (free_opp)
of_free_opp_table(cpu_dev);
- regulator_put(arm_reg);
- if (!IS_ERR(pu_reg))
- regulator_put(pu_reg);
- regulator_put(soc_reg);
- clk_put(arm_clk);
- clk_put(pll1_sys_clk);
- clk_put(pll1_sw_clk);
- clk_put(step_clk);
- clk_put(pll2_pfd2_396m_clk);
return 0;
}
--
1.9.1
--
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