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cpufreq: kirkwood-cpufreq:- Handle return value of clk_prepare_enable()

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clk_prepare_enable() can fail here and we must check its return value.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Arvind Yadav 2017-05-17 12:20:35 +05:30 committed by Rafael J. Wysocki
parent 6c77003677
commit 7575f82572
1 changed files with 16 additions and 3 deletions
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19
drivers/cpufreq/kirkwood-cpufreq.c
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@ -127,7 +127,12 @@ static int kirkwood_cpufreq_probe(struct platform_device *pdev)
return PTR_ERR(priv.cpu_clk);
}
clk_prepare_enable(priv.cpu_clk);
err = clk_prepare_enable(priv.cpu_clk);
if (err) {
dev_err(priv.dev, "Unable to prepare cpuclk\n");
return err;
}
kirkwood_freq_table[0].frequency = clk_get_rate(priv.cpu_clk) / 1000;
priv.ddr_clk = of_clk_get_by_name(np, "ddrclk");
@ -137,7 +142,11 @@ static int kirkwood_cpufreq_probe(struct platform_device *pdev)
goto out_cpu;
}
clk_prepare_enable(priv.ddr_clk);
err = clk_prepare_enable(priv.ddr_clk);
if (err) {
dev_err(priv.dev, "Unable to prepare ddrclk\n");
goto out_cpu;
}
kirkwood_freq_table[1].frequency = clk_get_rate(priv.ddr_clk) / 1000;
priv.powersave_clk = of_clk_get_by_name(np, "powersave");
@ -146,7 +155,11 @@ static int kirkwood_cpufreq_probe(struct platform_device *pdev)
err = PTR_ERR(priv.powersave_clk);
goto out_ddr;
}
clk_prepare_enable(priv.powersave_clk);
err = clk_prepare_enable(priv.powersave_clk);
if (err) {
dev_err(priv.dev, "Unable to prepare powersave clk\n");
goto out_ddr;
}
of_node_put(np);
np = NULL;