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Subject[PATCH 6/7] 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>
cc: linux-fbdev@vger.kernel.org
---

drivers/video/aty/aty128fb.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/video/aty/aty128fb.c b/drivers/video/aty/aty128fb.c
index 12ca031877d4..52108be69e77 100644
--- a/drivers/video/aty/aty128fb.c
+++ b/drivers/video/aty/aty128fb.c
@@ -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


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