drm: radeon: replace 0 with NULL

Replace 0 with NULL to fix sparse tool  warning
 warning: Using plain integer as NULL pointer

Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Zhan Liu <zhan.liu@amd.com>
Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/radeon/radeon_audio.c b/drivers/gpu/drm/radeon/radeon_audio.c
index 72db2b4..8c63ccb 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_audio.c
+++ b/drivers/gpu/drm/radeon/radeon_audio.c
@@ -288,7 +288,7 @@ static void radeon_audio_interface_init(struct radeon_device *rdev)
        } else {
                rdev->audio.funcs = &r600_funcs;
                rdev->audio.hdmi_funcs = &r600_hdmi_funcs;
-               rdev->audio.dp_funcs = 0;
+               rdev->audio.dp_funcs = NULL;
        }
 }