On Tue, Jul 01, 2014 at 10:02:35PM +0530, Viresh Kumar wrote:
> Currently, we defer probe if regulator_get() returned -EPROBE_DEFER, i.e.
> regulator isn't registered yet.
>
> The same is true for clock as well, so lets defer in that case as well.
>
> Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
> ---
> drivers/cpufreq/cpufreq-cpu0.c | 13 +++++++++++--
> 1 file changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c
> index 4273a5f..b5b8e1c 100644
> --- a/drivers/cpufreq/cpufreq-cpu0.c
> +++ b/drivers/cpufreq/cpufreq-cpu0.c
> @@ -150,8 +150,17 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev)
>
> cpu_clk = clk_get(cpu_dev, NULL);
> if (IS_ERR(cpu_clk)) {
> - ret = PTR_ERR(cpu_clk);
If you keep this ...
> - pr_err("failed to get cpu0 clock: %d\n", ret);
> + /*
> + * If cpu's clk node is present, but clock is not yet
> + * registered, we should try defering probe.
> + */
> + if (PTR_ERR(cpu_clk) == -EPROBE_DEFER) {
... you can use 'ret' here ...
> + dev_err(cpu_dev, "cpu0 clock not ready, retry\n");
> + ret = -EPROBE_DEFER;
... this can be saved ...
> + } else {
> + ret = PTR_ERR(cpu_clk);
... and this as well.
Shawn
> + dev_err(cpu_dev, "failed to get cpu0 clock: %d\n", ret);
> + }
> goto out_put_reg;
> }
>
> --
> 2.0.0.rc2
>
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