From: Dave Stevenson <dave.stevenson@raspberrypi.org>
Date: Fri, 19 Jul 2019 16:49:00 +0000 (+0100)
Subject: drm/vc4: Ensure zpos is always initialised
X-Git-Tag: accepted/tizen/unified/20200709.164653~996
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b3fe97d1a9f4755ad2e6688ec550d376e11d7e6f;p=platform%2Fkernel%2Flinux-rpi.git

drm/vc4: Ensure zpos is always initialised

The compiler is warning that default_zpos can be used
uninitialised as there is no default case to catch all plane
types.
No other plane types should ever be presented to vc4_fkms_plane_init,
but add a default case regardless.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
---

diff --git a/drivers/gpu/drm/vc4/vc4_firmware_kms.c b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
index 5526b7d..653c9f6 100644
--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
@@ -804,6 +804,7 @@ static struct drm_plane *vc4_fkms_plane_init(struct drm_device *dev,
 	 * other layers as requested by KMS.
 	 */
 	switch (type) {
+	default:
 	case DRM_PLANE_TYPE_PRIMARY:
 		default_zpos = 0;
 		break;