powerpc: Fix old-style function definition

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 <malat@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/platforms/powermac/backlight.c b/arch/powerpc/platforms/powermac/backlight.c
index a00096b1c713429be3cbe4a512e83cd66fcf6ee9..6b5dcccae1d30b6d5fc94b5c385efca66e61957b 100644 (file)
--- 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);
 }