linux-kernel - [PATCH 03/11] mtd: physmap_of: Drop unnecessary static

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Date:   Sat, 15 Jul 2017 22:07:38 +0200
From:   Julia Lawall <Julia.Lawall@...6.fr>
To:     David Woodhouse <dwmw2@...radead.org>
Cc:     keescook@...omium.org, kernel-janitors@...r.kernel.org,
        Brian Norris <computersforpeace@...il.com>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Richard Weinberger <richard@....at>,
        Cyrille Pitchen <cyrille.pitchen@...ev4u.fr>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 03/11] mtd: physmap_of: 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@...6.fr>

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

 drivers/mtd/maps/physmap_of_versatile.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -u -p a/drivers/mtd/maps/physmap_of_versatile.c b/drivers/mtd/maps/physmap_of_versatile.c
--- a/drivers/mtd/maps/physmap_of_versatile.c
+++ b/drivers/mtd/maps/physmap_of_versatile.c
@@ -97,7 +97,7 @@ static const struct of_device_id ebi_mat
 static int ap_flash_init(struct platform_device *pdev)
 {
 	struct device_node *ebi;
-	static void __iomem *ebi_base;
+	void __iomem *ebi_base;
 	u32 val;
 	int ret;