diff options
| author |   Arvind Yadav <arvind.yadav.cs@gmail.com> | 2017-05-17 12:20:35 +0530 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-05-30 00:09:41 +0200 |
| commit | 7575f8257279f9dd24b3fc950aa2c7e98564a103 (patch) | |
| tree | 1e77210a4dbd03f9cc7e9616d8a3d2edc402eeba /drivers/cpufreq/kirkwood-cpufreq.c | |
| parent | cpufreq: cpufreq_register_driver() should return -ENODEV if init fails (diff) | |
| download | linux-dev-7575f8257279f9dd24b3fc950aa2c7e98564a103.tar.xz linux-dev-7575f8257279f9dd24b3fc950aa2c7e98564a103.zip | |
cpufreq: kirkwood-cpufreq:- Handle return value of clk_prepare_enable()
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>
Diffstat (limited to 'drivers/cpufreq/kirkwood-cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/kirkwood-cpufreq.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/cpufreq/kirkwood-cpufreq.c b/drivers/cpufreq/kirkwood-cpufreq.c index 1b9bcd76c60e..c2dd43f3f5d8 100644 --- a/drivers/cpufreq/kirkwood-cpufreq.c +++ b/drivers/cpufreq/kirkwood-cpufreq.c @@ -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; |