Commit 96e4f523 authored by Julia Lawall's avatar Julia Lawall Committed by Mark Brown

regulator: palmas: Drop unnecessary static

Drop static on a local variable, when the variable is initialized before
any use, on every possible execution path through the function.

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>

There is no reduction in code size in this case, but the change does reduce
the size of the bss segment, containing uninitialized static data.

before:
   text    data     bss     dec     hex filename
  12882    3480       8   16370    3ff2 drivers/regulator/palmas-regulator.o

after:
   text    data     bss     dec     hex filename
  12882    3480       0   16362    3fea drivers/regulator/palmas-regulator.o
Signed-off-by: default avatarJulia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 2ea659a9
......@@ -1491,7 +1491,7 @@ static int palmas_dt_to_pdata(struct device *dev,
}
for (idx = 0; idx < ddata->max_reg; idx++) {
static struct of_regulator_match *match;
struct of_regulator_match *match;
struct palmas_reg_init *rinit;
struct device_node *np;
......
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