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mfd: max8925-i2c: Drop unnecessary static

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Drop static on a local variable, when the variable is initialized before
any use, on every possible execution path through the function.  The static
has no benefit, and dropping it reduces the code size.

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>

The change in code size is indicates by the following output from the size
command.

before:
   text    data     bss     dec     hex filename
   2579     240      16    2835     b13 drivers/mfd/max8925-i2c.o

after:
   text    data     bss     dec     hex filename
   2531     240       8    2779     adb drivers/mfd/max8925-i2c.o

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Julia Lawall 2017-05-04 22:10:54 +02:00 committed by Lee Jones
parent 45f80a9f78
commit 0953075112
1 changed files with 1 additions and 1 deletions
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2
drivers/mfd/max8925-i2c.c
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@ -151,7 +151,7 @@ static int max8925_probe(struct i2c_client *client,
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) {