2013-03-04 09:18:25

by Maxin B. John

[permalink] [raw]
Subject: Re: [PATCH] i2c: busses: i2c-ocores: Fix PM-related warning

On Tue, Feb 26, 2013 at 10:53 PM, <[email protected]> wrote:
> From: "Maxin B. John" <[email protected]>
>
> Fixes this warning:
> CC drivers/i2c/busses/i2c-ocores.o
> drivers/i2c/busses/i2c-ocores.c:460:12: warning: 'ocores_i2c_suspend'
> defined but not used [-Wunused-function]
> drivers/i2c/busses/i2c-ocores.c:471:12: warning: 'ocores_i2c_resume'
> defined but not used [-Wunused-function]
>
> Signed-off-by: Maxin B. John <[email protected]>
> ---
> drivers/i2c/busses/i2c-ocores.c | 9 +++------
> 1 files changed, 3 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-ocores.c b/drivers/i2c/busses/i2c-ocores.c
> index 0e1f824..1ecea5e 100644
> --- a/drivers/i2c/busses/i2c-ocores.c
> +++ b/drivers/i2c/busses/i2c-ocores.c
> @@ -456,7 +456,7 @@ static int ocores_i2c_remove(struct platform_device *pdev)
> return 0;
> }
>
> -#ifdef CONFIG_PM
> +#ifdef CONFIG_PM_SLEEP
> static int ocores_i2c_suspend(struct device *dev)
> {
> struct ocores_i2c *i2c = dev_get_drvdata(dev);
> @@ -476,12 +476,9 @@ static int ocores_i2c_resume(struct device *dev)
>
> return 0;
> }
> +#endif
>
> static SIMPLE_DEV_PM_OPS(ocores_i2c_pm, ocores_i2c_suspend, ocores_i2c_resume);
> -#define OCORES_I2C_PM (&ocores_i2c_pm)
> -#else
> -#define OCORES_I2C_PM NULL
> -#endif
>
> static struct platform_driver ocores_i2c_driver = {
> .probe = ocores_i2c_probe,
> @@ -490,7 +487,7 @@ static struct platform_driver ocores_i2c_driver = {
> .owner = THIS_MODULE,
> .name = "ocores-i2c",
> .of_match_table = ocores_i2c_match,
> - .pm = OCORES_I2C_PM,
> + .pm = &ocores_i2c_pm,
> },
> };
>
> --
> 1.7.7
>

ping..


2013-03-04 10:01:48

by Peter Korsgaard

[permalink] [raw]
Subject: Re: [PATCH] i2c: busses: i2c-ocores: Fix PM-related warning

>>>>> "Maxin" == Maxin B John <[email protected]> writes:

Maxin> On Tue, Feb 26, 2013 at 10:53 PM, <[email protected]> wrote:
>> From: "Maxin B. John" <[email protected]>
>>
>> Fixes this warning:
>> CC drivers/i2c/busses/i2c-ocores.o
>> drivers/i2c/busses/i2c-ocores.c:460:12: warning: 'ocores_i2c_suspend'
>> defined but not used [-Wunused-function]
>> drivers/i2c/busses/i2c-ocores.c:471:12: warning: 'ocores_i2c_resume'
>> defined but not used [-Wunused-function]
>>
>> Signed-off-by: Maxin B. John <[email protected]>
>> ---
>> drivers/i2c/busses/i2c-ocores.c | 9 +++------
>> 1 files changed, 3 insertions(+), 6 deletions(-)
>>
>> diff --git a/drivers/i2c/busses/i2c-ocores.c b/drivers/i2c/busses/i2c-ocores.c
>> index 0e1f824..1ecea5e 100644
>> --- a/drivers/i2c/busses/i2c-ocores.c
>> +++ b/drivers/i2c/busses/i2c-ocores.c
>> @@ -456,7 +456,7 @@ static int ocores_i2c_remove(struct platform_device *pdev)
>> return 0;
>> }
>>
>> -#ifdef CONFIG_PM
>> +#ifdef CONFIG_PM_SLEEP
>> static int ocores_i2c_suspend(struct device *dev)
>> {
>> struct ocores_i2c *i2c = dev_get_drvdata(dev);
>> @@ -476,12 +476,9 @@ static int ocores_i2c_resume(struct device *dev)
>>
>> return 0;
>> }
>> +#endif
>>
>> static SIMPLE_DEV_PM_OPS(ocores_i2c_pm, ocores_i2c_suspend,
>> ocores_i2c_resume);

A comment explaining that the suspend/resume callbacks are unused in the
!PM_SLEEP mode would be good.

With this change we waste ~100 bytes on a dummy dev_pm_ops structure,
but OK.


>> -#define OCORES_I2C_PM (&ocores_i2c_pm)
>> -#else
>> -#define OCORES_I2C_PM NULL
>> -#endif
>>
>> static struct platform_driver ocores_i2c_driver = {
>> .probe = ocores_i2c_probe,
>> @@ -490,7 +487,7 @@ static struct platform_driver ocores_i2c_driver = {
>> .owner = THIS_MODULE,
>> .name = "ocores-i2c",
>> .of_match_table = ocores_i2c_match,
>> - .pm = OCORES_I2C_PM,
>> + .pm = &ocores_i2c_pm,
>> },
>> };
>>
>> --
>> 1.7.7
>>

Maxin> ping..


--
Bye, Peter Korsgaard