diff mbox

[v2] clk: max77686: Remove unnecessary NULL checking for container_of()

Message ID 1357984906.6460.2.camel@phoenix (mailing list archive)
State New, archived
Headers show

Commit Message

Axel Lin Jan. 12, 2013, 10:01 a.m. UTC
container_of() never returns NULL, thus remove the NULL checking for it.
Also rename get_max77686_clk() to to_max77686_clk() for better readability.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
v2: remove unrelated change for ~max77686->mask 
 drivers/clk/clk-max77686.c |   28 +++++++---------------------
 1 file changed, 7 insertions(+), 21 deletions(-)

Comments

Mike Turquette Jan. 13, 2013, 4:38 a.m. UTC | #1
Quoting Axel Lin (2013-01-12 02:01:46)
> container_of() never returns NULL, thus remove the NULL checking for it.
> Also rename get_max77686_clk() to to_max77686_clk() for better readability.
> 
> Signed-off-by: Axel Lin <axel.lin@ingics.com>
> ---
> v2: remove unrelated change for ~max77686->mask 
>  drivers/clk/clk-max77686.c |   28 +++++++---------------------
>  1 file changed, 7 insertions(+), 21 deletions(-)
> 

This looks good.  Taken into clk-next.  I appreciate the respin.

Thanks,
Mike

> diff --git a/drivers/clk/clk-max77686.c b/drivers/clk/clk-max77686.c
> index 8944214..90bf59c 100644
> --- a/drivers/clk/clk-max77686.c
> +++ b/drivers/clk/clk-max77686.c
> @@ -44,33 +44,23 @@ struct max77686_clk {
>         struct clk_lookup *lookup;
>  };
>  
> -static struct max77686_clk *get_max77686_clk(struct clk_hw *hw)
> +static struct max77686_clk *to_max77686_clk(struct clk_hw *hw)
>  {
>         return container_of(hw, struct max77686_clk, hw);
>  }
>  
>  static int max77686_clk_prepare(struct clk_hw *hw)
>  {
> -       struct max77686_clk *max77686;
> -       int ret;
> -
> -       max77686 = get_max77686_clk(hw);
> -       if (!max77686)
> -               return -ENOMEM;
> -
> -       ret = regmap_update_bits(max77686->iodev->regmap,
> -               MAX77686_REG_32KHZ, max77686->mask, max77686->mask);
> +       struct max77686_clk *max77686 = to_max77686_clk(hw);
>  
> -       return ret;
> +       return regmap_update_bits(max77686->iodev->regmap,
> +                                 MAX77686_REG_32KHZ, max77686->mask,
> +                                 max77686->mask);
>  }
>  
>  static void max77686_clk_unprepare(struct clk_hw *hw)
>  {
> -       struct max77686_clk *max77686;
> -
> -       max77686 = get_max77686_clk(hw);
> -       if (!max77686)
> -               return;
> +       struct max77686_clk *max77686 = to_max77686_clk(hw);
>  
>         regmap_update_bits(max77686->iodev->regmap,
>                 MAX77686_REG_32KHZ, max77686->mask, ~max77686->mask);
> @@ -78,14 +68,10 @@ static void max77686_clk_unprepare(struct clk_hw *hw)
>  
>  static int max77686_clk_is_enabled(struct clk_hw *hw)
>  {
> -       struct max77686_clk *max77686;
> +       struct max77686_clk *max77686 = to_max77686_clk(hw);
>         int ret;
>         u32 val;
>  
> -       max77686 = get_max77686_clk(hw);
> -       if (!max77686)
> -               return -ENOMEM;
> -
>         ret = regmap_read(max77686->iodev->regmap,
>                                 MAX77686_REG_32KHZ, &val);
>  
> -- 
> 1.7.9.5
diff mbox

Patch

diff --git a/drivers/clk/clk-max77686.c b/drivers/clk/clk-max77686.c
index 8944214..90bf59c 100644
--- a/drivers/clk/clk-max77686.c
+++ b/drivers/clk/clk-max77686.c
@@ -44,33 +44,23 @@  struct max77686_clk {
 	struct clk_lookup *lookup;
 };
 
-static struct max77686_clk *get_max77686_clk(struct clk_hw *hw)
+static struct max77686_clk *to_max77686_clk(struct clk_hw *hw)
 {
 	return container_of(hw, struct max77686_clk, hw);
 }
 
 static int max77686_clk_prepare(struct clk_hw *hw)
 {
-	struct max77686_clk *max77686;
-	int ret;
-
-	max77686 = get_max77686_clk(hw);
-	if (!max77686)
-		return -ENOMEM;
-
-	ret = regmap_update_bits(max77686->iodev->regmap,
-		MAX77686_REG_32KHZ, max77686->mask, max77686->mask);
+	struct max77686_clk *max77686 = to_max77686_clk(hw);
 
-	return ret;
+	return regmap_update_bits(max77686->iodev->regmap,
+				  MAX77686_REG_32KHZ, max77686->mask,
+				  max77686->mask);
 }
 
 static void max77686_clk_unprepare(struct clk_hw *hw)
 {
-	struct max77686_clk *max77686;
-
-	max77686 = get_max77686_clk(hw);
-	if (!max77686)
-		return;
+	struct max77686_clk *max77686 = to_max77686_clk(hw);
 
 	regmap_update_bits(max77686->iodev->regmap,
 		MAX77686_REG_32KHZ, max77686->mask, ~max77686->mask);
@@ -78,14 +68,10 @@  static void max77686_clk_unprepare(struct clk_hw *hw)
 
 static int max77686_clk_is_enabled(struct clk_hw *hw)
 {
-	struct max77686_clk *max77686;
+	struct max77686_clk *max77686 = to_max77686_clk(hw);
 	int ret;
 	u32 val;
 
-	max77686 = get_max77686_clk(hw);
-	if (!max77686)
-		return -ENOMEM;
-
 	ret = regmap_read(max77686->iodev->regmap,
 				MAX77686_REG_32KHZ, &val);