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[PATCH 11/11] mfd: max8925-i2c: Drop unnecessary static

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  [PATCH 11/11] mfd: max8925-i2c: Drop unnecessary static Julia Lawall <Julia.Lawall@lip6.fr> - 2017-07-15 22:40 +0200
    Re: [PATCH 11/11] mfd: max8925-i2c: Drop unnecessary static Lee Jones <lee.jones@linaro.org> - 2017-07-18 09:30 +0200

#1687995 — [PATCH 11/11] mfd: max8925-i2c: Drop unnecessary static

Drop static on a local variable, when the variable is initialized before
any possible use.  Thus, the static has no benefit.

The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@bad exists@
position p;
identifier x;
type T;
@@
static T x@p;
...
x = <+...x...+>

@@
identifier x;
expression e;
type T;
position p != bad.p;
@@
-static
 T x@p;
 ... when != x
     when strict
?x = e;
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
These patches are all independent of each other.

 drivers/mfd/max8925-i2c.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -u -p a/drivers/mfd/max8925-i2c.c b/drivers/mfd/max8925-i2c.c
--- a/drivers/mfd/max8925-i2c.c
+++ b/drivers/mfd/max8925-i2c.c
@@ -151,7 +151,7 @@ static int max8925_probe(struct i2c_clie
 				   const struct i2c_device_id *id)
 {
 	struct max8925_platform_data *pdata = dev_get_platdata(&client->dev);
-	static struct max8925_chip *chip;
+	struct max8925_chip *chip;
 	struct device_node *node = client->dev.of_node;
 
 	if (node && !pdata) {

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#1689811

On Sat, 15 Jul 2017, Julia Lawall wrote:

> Drop static on a local variable, when the variable is initialized before
> any possible use.  Thus, the static has no benefit.
> 
> The semantic patch that fixes this problem is as follows:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @bad exists@
> position p;
> identifier x;
> type T;
> @@
> static T x@p;
> ...
> x = <+...x...+>
> 
> @@
> identifier x;
> expression e;
> type T;
> position p != bad.p;
> @@
> -static
>  T x@p;
>  ... when != x
>      when strict
> ?x = e;
> // </smpl>
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
> 
> ---
> These patches are all independent of each other.
> 
>  drivers/mfd/max8925-i2c.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Applied, thanks.

> diff -u -p a/drivers/mfd/max8925-i2c.c b/drivers/mfd/max8925-i2c.c
> --- a/drivers/mfd/max8925-i2c.c
> +++ b/drivers/mfd/max8925-i2c.c
> @@ -151,7 +151,7 @@ static int max8925_probe(struct i2c_clie
>  				   const struct i2c_device_id *id)
>  {
>  	struct max8925_platform_data *pdata = dev_get_platdata(&client->dev);
> -	static struct max8925_chip *chip;
> +	struct max8925_chip *chip;
>  	struct device_node *node = client->dev.of_node;
>  
>  	if (node && !pdata) {
> 

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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