2022-04-22 02:23:31

by Stephen Boyd

[permalink] [raw]
Subject: Re: [PATCH v2] clk: imx: scu: Use pm_runtime_resume_and_get to fix pm_runtime_get_sync() usage

Quoting Miaoqian Lin (2022-04-21 18:33:16)
> If the device is already in a runtime PM enabled state
> pm_runtime_get_sync() will return 1.
>
> Also, we need to call pm_runtime_put_noidle() when pm_runtime_get_sync()
> fails, so use pm_runtime_resume_and_get() instead. this function
> will handle this.
>
> Fixes: 78edeb080330 ("clk: imx: scu: add runtime pm support")
> Signed-off-by: Miaoqian Lin <[email protected]>
> ---

Please don't send patches as replies to previous versions of the patch.

> drivers/clk/imx/clk-scu.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c
> index 083da31dc3ea..2044e62980e3 100644
> --- a/drivers/clk/imx/clk-scu.c
> +++ b/drivers/clk/imx/clk-scu.c
> @@ -528,7 +528,7 @@ static int imx_clk_scu_probe(struct platform_device *pdev)
> pm_runtime_use_autosuspend(&pdev->dev);
> pm_runtime_enable(dev);
>
> - ret = pm_runtime_get_sync(dev);
> + ret = pm_runtime_resume_and_get(dev);
> if (ret) {
> pm_genpd_remove_device(dev);
> pm_runtime_disable(dev);
> --
> 2.17.1
>


2022-04-22 18:13:31

by Miaoqian Lin

[permalink] [raw]
Subject: Re: [PATCH v2] clk: imx: scu: Use pm_runtime_resume_and_get to fix pm_runtime_get_sync() usage


On 2022/4/22 9:44, Stephen Boyd wrote:
> Quoting Miaoqian Lin (2022-04-21 18:33:16)
>> If the device is already in a runtime PM enabled state
>> pm_runtime_get_sync() will return 1.
>>
>> Also, we need to call pm_runtime_put_noidle() when pm_runtime_get_sync()
>> fails, so use pm_runtime_resume_and_get() instead. this function
>> will handle this.
>>
>> Fixes: 78edeb080330 ("clk: imx: scu: add runtime pm support")
>> Signed-off-by: Miaoqian Lin <[email protected]>
>> ---
> Please don't send patches as replies to previous versions of the patch.

Sorry, I thought I should keep them in one thread, to provide the context

for other people to follow up. Am I suppose to resend it?

>> drivers/clk/imx/clk-scu.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c
>> index 083da31dc3ea..2044e62980e3 100644
>> --- a/drivers/clk/imx/clk-scu.c
>> +++ b/drivers/clk/imx/clk-scu.c
>> @@ -528,7 +528,7 @@ static int imx_clk_scu_probe(struct platform_device *pdev)
>> pm_runtime_use_autosuspend(&pdev->dev);
>> pm_runtime_enable(dev);
>>
>> - ret = pm_runtime_get_sync(dev);
>> + ret = pm_runtime_resume_and_get(dev);
>> if (ret) {
>> pm_genpd_remove_device(dev);
>> pm_runtime_disable(dev);
>> --
>> 2.17.1
>>

2022-04-23 03:41:53

by Stephen Boyd

[permalink] [raw]
Subject: Re: [PATCH v2] clk: imx: scu: Use pm_runtime_resume_and_get to fix pm_runtime_get_sync() usage

Quoting Miaoqian Lin (2022-04-21 18:59:54)
>
> On 2022/4/22 9:44, Stephen Boyd wrote:
> > Quoting Miaoqian Lin (2022-04-21 18:33:16)
> >> If the device is already in a runtime PM enabled state
> >> pm_runtime_get_sync() will return 1.
> >>
> >> Also, we need to call pm_runtime_put_noidle() when pm_runtime_get_sync()
> >> fails, so use pm_runtime_resume_and_get() instead. this function
> >> will handle this.
> >>
> >> Fixes: 78edeb080330 ("clk: imx: scu: add runtime pm support")
> >> Signed-off-by: Miaoqian Lin <[email protected]>
> >> ---
> > Please don't send patches as replies to previous versions of the patch.
>
> Sorry, I thought I should keep them in one thread, to provide the context

Please link back to previous revisions with lore.

https://lore.kernel.org/r/<message-id-of-rev1>

and then add a change log below the triple dash referencing that lore
link and anything that has changed since that revision.

>
> for other people to follow up. Am I suppose to resend it?

Yes. Might as well practice making a changelog at the same time.