On 17-05-17, 12:20, Arvind Yadav wrote:
> clk_prepare_enable() can fail here and we must check its return value.
>
> Signed-off-by: Arvind Yadav <arvind.yadav...@gmail.com>
> ---
> drivers/cpufreq/kirkwood-cpufreq.c | 19 ++++++++++++++++---
> 1 file changed, 16 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/cpufreq/kirkwood-cpufreq.c
> b/drivers/cpufreq/kirkwood-cpufreq.c
> index 1b9bcd7..c2dd43f 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;
Acked-by: Viresh Kumar <viresh.ku...@linaro.org>
--
viresh
