linux-kernel - [PATCH] video: cobalt_lcdfb: constify fb_fix

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Message-ID: <20170708013023.GA4842@embeddedgus>
Date:   Fri, 7 Jul 2017 20:30:23 -0500
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc:     linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Subject: [PATCH] video: cobalt_lcdfb: constify fb_fix_screeninfo structure

This structure is only used to copy into other structures,
so declare it as const.

This issue was detected using Coccinelle and the following semantic patch:

@r disable optional_qualifier@
identifier i;
position p;
@@
static struct fb_fix_screeninfo i@p = { ... };

@ok@
identifier r.i;
expression e;
position p;
@@
e = i@p

@bad@
position p != {r.p,ok.p};
identifier r.i;
struct fb_fix_screeninfo e;
@@
e@i@p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
 struct fb_fix_screeninfo i = { ... };

Signed-off-by: Gustavo A. R. Silva <garsilva@...eddedor.com>
---
 drivers/video/fbdev/cobalt_lcdfb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/cobalt_lcdfb.c b/drivers/video/fbdev/cobalt_lcdfb.c
index 9da90bd..0ef633e 100644
--- a/drivers/video/fbdev/cobalt_lcdfb.c
+++ b/drivers/video/fbdev/cobalt_lcdfb.c
@@ -126,7 +126,7 @@ static void lcd_clear(struct fb_info *info)
 	lcd_write_control(info, LCD_RESET);
 }
 
-static struct fb_fix_screeninfo cobalt_lcdfb_fix = {
+static const struct fb_fix_screeninfo cobalt_lcdfb_fix = {
 	.id		= "cobalt-lcd",
 	.type		= FB_TYPE_TEXT,
 	.type_aux	= FB_AUX_TEXT_MDA,
-- 
2.5.0