2014-01-27 18:37:26

by Manish Badarkhe

Subject: [PATCH V3] max8925_power: Use "IS_ENABLED(CONFIG_OF)" for DT code.

Instead of "#ifdef CONFIG_OF" use "IS_ENABLED(CONFIG_OF)"
option for DT code to avoid if-deffery in code.

Signed-off-by: Manish Badarkhe <[email protected]>
---
:100644 100644 b4513f2... 3e54476... M drivers/power/max8925_power.c
drivers/power/max8925_power.c | 17 +++++------------
1 file changed, 5 insertions(+), 12 deletions(-)

diff --git a/drivers/power/max8925_power.c b/drivers/power/max8925_power.c
index b4513f2..3e54476 100644
--- a/drivers/power/max8925_power.c
+++ b/drivers/power/max8925_power.c
@@ -427,7 +427,6 @@ static int max8925_deinit_charger(struct max8925_power_info *info)
return 0;
}

-#ifdef CONFIG_OF
static struct max8925_power_pdata *
max8925_power_dt_init(struct platform_device *pdev)
{
@@ -440,9 +439,6 @@ max8925_power_dt_init(struct platform_device *pdev)
int no_insert_detect;
struct max8925_power_pdata *pdata;

- if (!nproot)
- return pdev->dev.platform_data;
-
np = of_find_node_by_name(nproot, "charger");
if (!np) {
dev_err(&pdev->dev, "failed to find charger node\n");
@@ -468,13 +464,6 @@ max8925_power_dt_init(struct platform_device *pdev)

return pdata;
}
-#else
-static struct max8925_power_pdata *
-max8925_power_dt_init(struct platform_device *pdev)
-{
- return pdev->dev.platform_data;
-}
-#endif

static int max8925_power_probe(struct platform_device *pdev)
{
@@ -483,7 +472,11 @@ static int max8925_power_probe(struct platform_device *pdev)
struct max8925_power_info *info;
int ret;

- pdata = max8925_power_dt_init(pdev);
+ pdata = dev_get_platdata(&pdev->dev);
+
+ if (!pdata && chip->dev->of_node)
+ pdata = max8925_power_dt_init(pdev);
+
if (!pdata) {
dev_err(&pdev->dev, "platform data isn't assigned to "
"power supply\n");
--
1.7.10.4

2014-01-28 11:51:26

by Tomasz Figa

Subject: Re: [PATCH V3] max8925_power: Use "IS_ENABLED(CONFIG_OF)" for DT code.

Hi,

On 27.01.2014 19:37, Manish Badarkhe wrote:
> Instead of "#ifdef CONFIG_OF" use "IS_ENABLED(CONFIG_OF)"
> option for DT code to avoid if-deffery in code.
>
> Signed-off-by: Manish Badarkhe <[email protected]>
> ---
> :100644 100644 b4513f2... 3e54476... M drivers/power/max8925_power.c
> drivers/power/max8925_power.c | 17 +++++------------
> 1 file changed, 5 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/power/max8925_power.c b/drivers/power/max8925_power.c
> index b4513f2..3e54476 100644
> --- a/drivers/power/max8925_power.c
> +++ b/drivers/power/max8925_power.c
> @@ -427,7 +427,6 @@ static int max8925_deinit_charger(struct max8925_power_info *info)
> return 0;
> }
>
> -#ifdef CONFIG_OF
> static struct max8925_power_pdata *
> max8925_power_dt_init(struct platform_device *pdev)
> {
> @@ -440,9 +439,6 @@ max8925_power_dt_init(struct platform_device *pdev)
> int no_insert_detect;
> struct max8925_power_pdata *pdata;
>
> - if (!nproot)
> - return pdev->dev.platform_data;
> -
> np = of_find_node_by_name(nproot, "charger");
> if (!np) {
> dev_err(&pdev->dev, "failed to find charger node\n");
> @@ -468,13 +464,6 @@ max8925_power_dt_init(struct platform_device *pdev)
>
> return pdata;
> }
> -#else
> -static struct max8925_power_pdata *
> -max8925_power_dt_init(struct platform_device *pdev)
> -{
> - return pdev->dev.platform_data;
> -}
> -#endif
>
> static int max8925_power_probe(struct platform_device *pdev)
> {
> @@ -483,7 +472,11 @@ static int max8925_power_probe(struct platform_device *pdev)
> struct max8925_power_info *info;
> int ret;
>
> - pdata = max8925_power_dt_init(pdev);
> + pdata = dev_get_platdata(&pdev->dev);
> +
> + if (!pdata && chip->dev->of_node)

Shouldn't IS_ENABLED(CONFIG_OF) also be checked here to let the compiler
throw max8925_power_dt_init() away if the condition always evaluates to
false?

Best regards,
Tomasz

2014-01-28 15:12:11

by Manish Badarkhe

Subject: Re: [PATCH V3] max8925_power: Use "IS_ENABLED(CONFIG_OF)" for DT code.

Hi Tomasz,

On Tue, Jan 28, 2014 at 5:21 PM, Tomasz Figa <[email protected]> wrote:
> Hi,
>
>
> On 27.01.2014 19:37, Manish Badarkhe wrote:
>>
>> Instead of "#ifdef CONFIG_OF" use "IS_ENABLED(CONFIG_OF)"
>> option for DT code to avoid if-deffery in code.
>>
>> Signed-off-by: Manish Badarkhe <[email protected]>
>> ---
>> :100644 100644 b4513f2... 3e54476... M drivers/power/max8925_power.c
>> drivers/power/max8925_power.c | 17 +++++------------
>> 1 file changed, 5 insertions(+), 12 deletions(-)
>>
>> diff --git a/drivers/power/max8925_power.c b/drivers/power/max8925_power.c
>> index b4513f2..3e54476 100644
>> --- a/drivers/power/max8925_power.c
>> +++ b/drivers/power/max8925_power.c
>> @@ -427,7 +427,6 @@ static int max8925_deinit_charger(struct
>> max8925_power_info *info)
>> return 0;
>> }
>>
>> -#ifdef CONFIG_OF
>> static struct max8925_power_pdata *
>> max8925_power_dt_init(struct platform_device *pdev)
>> {
>> @@ -440,9 +439,6 @@ max8925_power_dt_init(struct platform_device *pdev)
>> int no_insert_detect;
>> struct max8925_power_pdata *pdata;
>>
>> - if (!nproot)
>> - return pdev->dev.platform_data;
>> -
>> np = of_find_node_by_name(nproot, "charger");
>> if (!np) {
>> dev_err(&pdev->dev, "failed to find charger node\n");
>> @@ -468,13 +464,6 @@ max8925_power_dt_init(struct platform_device *pdev)
>>
>> return pdata;
>> }
>> -#else
>> -static struct max8925_power_pdata *
>> -max8925_power_dt_init(struct platform_device *pdev)
>> -{
>> - return pdev->dev.platform_data;
>> -}
>> -#endif
>>
>> static int max8925_power_probe(struct platform_device *pdev)
>> {
>> @@ -483,7 +472,11 @@ static int max8925_power_probe(struct platform_device
>> *pdev)
>> struct max8925_power_info *info;
>> int ret;
>>
>> - pdata = max8925_power_dt_init(pdev);
>> + pdata = dev_get_platdata(&pdev->dev);
>> +
>> + if (!pdata && chip->dev->of_node)
>
>
> Shouldn't IS_ENABLED(CONFIG_OF) also be checked here to let the compiler
> throw max8925_power_dt_init() away if the condition always evaluates to
> false?

oops, I missed that. I will add it and repost patch.

Thanks
Manish Badarkhe