Re: [PATCH v4 2/3] PM / clock_ops: make __pm_clk_enable more generic

From: Dmitry Torokhov
Date: Thu Nov 06 2014 - 12:32:14 EST


On Thu, Nov 06, 2014 at 03:51:01PM +0200, Grygorii Strashko wrote:
> Now there are two places in code which do the same things,
> so allow __pm_clk_enable() to accept pointer on pm_clock_entry
> structure as second parameter instead of pointer on clock and
> remove duplicated code.
>
> Also, updated function intended to be used by following patch.
>
> CC: Santosh Shilimkar <ssantosh@xxxxxxxxxx>
> CC: Kevin Hilman <khilman@xxxxxxxxxx>
> CC: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
> CC: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
> CC: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> Signed-off-by: Grygorii Strashko <grygorii.strashko@xxxxxx>

Reviewed-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>

> ---
> drivers/base/power/clock_ops.c | 38 ++++++++++++++++----------------------
> 1 file changed, 16 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/base/power/clock_ops.c b/drivers/base/power/clock_ops.c
> index f061eaa..b32b5d4 100644
> --- a/drivers/base/power/clock_ops.c
> +++ b/drivers/base/power/clock_ops.c
> @@ -35,14 +35,20 @@ struct pm_clock_entry {
> /**
> * pm_clk_enable - Enable a clock, reporting any errors
> * @dev: The device for the given clock
> - * @clk: The clock being enabled.
> + * @ce: PM clock entry corresponding to the clock.
> */
> -static inline int __pm_clk_enable(struct device *dev, struct clk *clk)
> +static inline int __pm_clk_enable(struct device *dev, struct pm_clock_entry *ce)
> {
> - int ret = clk_enable(clk);
> - if (ret)
> - dev_err(dev, "%s: failed to enable clk %p, error %d\n",
> - __func__, clk, ret);
> + int ret;
> +
> + if (ce->status < PCE_STATUS_ERROR) {
> + ret = clk_enable(ce->clk);
> + if (!ret)
> + ce->status = PCE_STATUS_ENABLED;
> + else
> + dev_err(dev, "%s: failed to enable clk %p, error %d\n",
> + __func__, ce->clk, ret);
> + }
>
> return ret;
> }
> @@ -293,7 +299,6 @@ int pm_clk_resume(struct device *dev)
> struct pm_subsys_data *psd = dev_to_psd(dev);
> struct pm_clock_entry *ce;
> unsigned long flags;
> - int ret;
>
> dev_dbg(dev, "%s()\n", __func__);
>
> @@ -302,13 +307,8 @@ int pm_clk_resume(struct device *dev)
>
> spin_lock_irqsave(&psd->lock, flags);
>
> - list_for_each_entry(ce, &psd->clock_list, node) {
> - if (ce->status < PCE_STATUS_ERROR) {
> - ret = __pm_clk_enable(dev, ce->clk);
> - if (!ret)
> - ce->status = PCE_STATUS_ENABLED;
> - }
> - }
> + list_for_each_entry(ce, &psd->clock_list, node)
> + __pm_clk_enable(dev, ce);
>
> spin_unlock_irqrestore(&psd->lock, flags);
>
> @@ -417,7 +417,6 @@ int pm_clk_resume(struct device *dev)
> struct pm_subsys_data *psd = dev_to_psd(dev);
> struct pm_clock_entry *ce;
> unsigned long flags;
> - int ret;
>
> dev_dbg(dev, "%s()\n", __func__);
>
> @@ -427,13 +426,8 @@ int pm_clk_resume(struct device *dev)
>
> spin_lock_irqsave(&psd->lock, flags);
>
> - list_for_each_entry(ce, &psd->clock_list, node) {
> - if (ce->status < PCE_STATUS_ERROR) {
> - ret = __pm_clk_enable(dev, ce->clk);
> - if (!ret)
> - ce->status = PCE_STATUS_ENABLED;
> - }
> - }
> + list_for_each_entry(ce, &psd->clock_list, node)
> + __pm_clk_enable(dev, ce);
>
> spin_unlock_irqrestore(&psd->lock, flags);
>
> --
> 1.9.1
>

--
Dmitry
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