[PATCH 1/2] powerpc: Fix old-style function definition

[Mathieu Malaterre]

Fix warnings such as:

arch/powerpc/platforms/powermac/backlight.c: In function 
‘pmac_backlight_get_legacy_brightness’:
arch/powerpc/platforms/powermac/backlight.c:189:5: error: old-style function 
definition [-Werror=old-style-definition]
 int pmac_backlight_get_legacy_brightness()
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Mathieu Malaterre <ma...@debian.org>
---
 arch/powerpc/platforms/powermac/backlight.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/platforms/powermac/backlight.c 
b/arch/powerpc/platforms/powermac/backlight.c
index a00096b1c713..6b5dcccae1d3 100644
--- a/arch/powerpc/platforms/powermac/backlight.c
+++ b/arch/powerpc/platforms/powermac/backlight.c
@@ -186,7 +186,7 @@ int pmac_backlight_set_legacy_brightness(int brightness)
        return __pmac_backlight_set_legacy_brightness(brightness);
 }
 
-int pmac_backlight_get_legacy_brightness()
+int pmac_backlight_get_legacy_brightness(void)
 {
        int result = -ENXIO;
 
@@ -205,12 +205,12 @@ int pmac_backlight_get_legacy_brightness()
        return result;
 }
 
-void pmac_backlight_disable()
+void pmac_backlight_disable(void)
 {
        atomic_inc(&kernel_backlight_disabled);
 }
 
-void pmac_backlight_enable()
+void pmac_backlight_enable(void)
 {
        atomic_dec(&kernel_backlight_disabled);
 }
-- 
2.11.0