diff mbox

[18/33] power: supply: use match_string() helper

Message ID 1526903890-35761-19-git-send-email-xieyisheng1@huawei.com (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Xie Yisheng May 21, 2018, 11:57 a.m. UTC
match_string() returns the index of an array for a matching string,
which can be used intead of open coded variant.

Cc: Sebastian Reichel <sre@kernel.org>
Cc: linux-pm@vger.kernel.org
Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
---
 drivers/power/supply/power_supply_core.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

Comments

Andy Shevchenko May 21, 2018, 9:58 p.m. UTC | #1
On Mon, May 21, 2018 at 2:57 PM, Yisheng Xie <xieyisheng1@huawei.com> wrote:
> match_string() returns the index of an array for a matching string,
> which can be used intead of open coded variant.
>

This doesn't make code looks better anyhow. I even think it makes it
worse to read.
That's why I dropped my version of the change (and yes, I missed the
type conversion which looks here just ugly).

Sebastian, if my opinion makes any difference here, I would say NAK to this one.

> Cc: Sebastian Reichel <sre@kernel.org>
> Cc: linux-pm@vger.kernel.org
> Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
> ---
>  drivers/power/supply/power_supply_core.c | 16 ++++++----------
>  1 file changed, 6 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c
> index feac7b0..84da3a2 100644
> --- a/drivers/power/supply/power_supply_core.c
> +++ b/drivers/power/supply/power_supply_core.c
> @@ -36,8 +36,6 @@
>  static bool __power_supply_is_supplied_by(struct power_supply *supplier,
>                                          struct power_supply *supply)
>  {
> -       int i;
> -
>         if (!supply->supplied_from && !supplier->supplied_to)
>                 return false;
>
> @@ -45,18 +43,16 @@ static bool __power_supply_is_supplied_by(struct power_supply *supplier,
>         if (supply->supplied_from) {
>                 if (!supplier->desc->name)
>                         return false;
> -               for (i = 0; i < supply->num_supplies; i++)
> -                       if (!strcmp(supplier->desc->name, supply->supplied_from[i]))
> -                               return true;
> +               return match_string((const char **)supply->supplied_from,
> +                                   supply->num_supplies,
> +                                   supplier->desc->name) >= 0;
>         } else {
>                 if (!supply->desc->name)
>                         return false;
> -               for (i = 0; i < supplier->num_supplicants; i++)
> -                       if (!strcmp(supplier->supplied_to[i], supply->desc->name))
> -                               return true;
> +               return match_string((const char **)supplier->supplied_to,
> +                                   supplier->num_supplicants,
> +                                   supply->desc->name) >= 0;
>         }
> -
> -       return false;
>  }
>
>  static int __power_supply_changed_work(struct device *dev, void *data)
> --
> 1.7.12.4
>
Sebastian Reichel May 22, 2018, 4:16 p.m. UTC | #2
Hi Andy,

On Tue, May 22, 2018 at 12:58:14AM +0300, Andy Shevchenko wrote:
> On Mon, May 21, 2018 at 2:57 PM, Yisheng Xie <xieyisheng1@huawei.com> wrote:
> > match_string() returns the index of an array for a matching string,
> > which can be used intead of open coded variant.
> >
> 
> This doesn't make code looks better anyhow. I even think it makes it
> worse to read. That's why I dropped my version of the change (and yes,
> I missed the type conversion which looks here just ugly).
> 
> Sebastian, if my opinion makes any difference here, I would say
> NAK to this one.

I agree.

-- Sebastian
diff mbox

Patch

diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c
index feac7b0..84da3a2 100644
--- a/drivers/power/supply/power_supply_core.c
+++ b/drivers/power/supply/power_supply_core.c
@@ -36,8 +36,6 @@ 
 static bool __power_supply_is_supplied_by(struct power_supply *supplier,
 					 struct power_supply *supply)
 {
-	int i;
-
 	if (!supply->supplied_from && !supplier->supplied_to)
 		return false;
 
@@ -45,18 +43,16 @@  static bool __power_supply_is_supplied_by(struct power_supply *supplier,
 	if (supply->supplied_from) {
 		if (!supplier->desc->name)
 			return false;
-		for (i = 0; i < supply->num_supplies; i++)
-			if (!strcmp(supplier->desc->name, supply->supplied_from[i]))
-				return true;
+		return match_string((const char **)supply->supplied_from,
+				    supply->num_supplies,
+				    supplier->desc->name) >= 0;
 	} else {
 		if (!supply->desc->name)
 			return false;
-		for (i = 0; i < supplier->num_supplicants; i++)
-			if (!strcmp(supplier->supplied_to[i], supply->desc->name))
-				return true;
+		return match_string((const char **)supplier->supplied_to,
+				    supplier->num_supplicants,
+				    supply->desc->name) >= 0;
 	}
-
-	return false;
 }
 
 static int __power_supply_changed_work(struct device *dev, void *data)