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drivers/video/aty/aty128fb.c: fix a warning pertaining to the aty128fb backlight variable

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Fix the following warning in the aty128fb driver:

	drivers/video/aty/aty128fb.c:363:12: warning: 'backlight' defined but not used [-Wunused-variable]
	 static int backlight = 0;
		    ^

as the variable's value is only read if CONFIG_FB_ATY128_BACKLIGHT=y.  The
variable is also set if MODULE is unset[*].

[*] I wonder if the conditional wrapper around aty128fb_setup() should be
    using CONFIG_MODULE rather than MODULE.

Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Howells 2014-01-23 15:54:06 -08:00 committed by Linus Torvalds
parent c6d5f989e1
commit a79530e4d8
1 changed files with 4 additions and 0 deletions
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4
drivers/video/aty/aty128fb.c
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@ -357,11 +357,13 @@ static int default_lcd_on = 1;
static bool mtrr = true;
#endif
#ifdef CONFIG_FB_ATY128_BACKLIGHT
#ifdef CONFIG_PMAC_BACKLIGHT
static int backlight = 1;
#else
static int backlight = 0;
#endif
#endif
/* PLL constants */
struct aty128_constants {
@ -1671,7 +1673,9 @@ static int aty128fb_setup(char *options)
default_crt_on = simple_strtoul(this_opt+4, NULL, 0);
continue;
} else if (!strncmp(this_opt, "backlight:", 10)) {
#ifdef CONFIG_FB_ATY128_BACKLIGHT
backlight = simple_strtoul(this_opt+10, NULL, 0);
#endif
continue;
}
#ifdef CONFIG_MTRR