On Wed, Jul 17, 2013 at 03:06:20PM +0100, Sudeep.KarkadaNagesha@xxxxxxx wrote:
> From: Sudeep KarkadaNagesha <sudeep.karkadanagesha@xxxxxxx>
>
> Now that the cpu device registration initialises the of_node(if available)
> appropriately for all the cpus, parsing here is redundant.
>
> This patch removes all DT parsing and uses cpu->of_node instead.
>
> Cc: Andrew Lunn <andrew@xxxxxxx>
> Cc: Jason Cooper <jason@xxxxxxxxxxxxxx>
> Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
> Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@xxxxxxx>
> ---
> drivers/cpufreq/kirkwood-cpufreq.c | 14 ++++++++++++--
> 1 file changed, 12 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/cpufreq/kirkwood-cpufreq.c b/drivers/cpufreq/kirkwood-cpufreq.c
> index c233ea6..18aa3eb 100644
> --- a/drivers/cpufreq/kirkwood-cpufreq.c
> +++ b/drivers/cpufreq/kirkwood-cpufreq.c
> @@ -13,6 +13,7 @@
> #include <linux/module.h>
> #include <linux/clk.h>
> #include <linux/clk-provider.h>
> +#include <linux/cpu.h>
> #include <linux/cpufreq.h>
> #include <linux/of.h>
> #include <linux/platform_device.h>
> @@ -165,6 +166,7 @@ static struct cpufreq_driver kirkwood_cpufreq_driver = {
> static int kirkwood_cpufreq_probe(struct platform_device *pdev)
> {
> struct device_node *np;
> + struct device *cpu_dev;
> struct resource *res;
> int err;
>
> @@ -175,9 +177,17 @@ static int kirkwood_cpufreq_probe(struct platform_device *pdev)
> if (IS_ERR(priv.base))
> return PTR_ERR(priv.base);
>
> - np = of_find_node_by_path("/cpus/cpu@0");
> - if (!np)
> + cpu_dev = get_cpu_device(0);
> + if (!cpu_dev) {
> + dev_err(&pdev->dev, "failed to get cpu device\n");
> return -ENODEV;
> + }
> +
> + np = of_node_get(cpu_dev->of_node);
> + if (!np) {
> + dev_err(&pdev->dev, "failed to get cpu device node\n");
> + return -ENODEV;
> + }
Hi Sudeep
Are we not going a bit backwards here? You are replacing two lines
with 10 lines.
How about putting these 10 lines into some helper,
of_get_cpu_device()? It would be useful for spear, kirkwood and
imx6q, and maybe others.
Thanks
Andrew
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