[PATCH] drm: atomic helper: fix W=1 warnings

[Benjamin Gaignard]

Fix warnings with W=1.
Few for_each macro set variables that are never used later.
Prevent warning by marking these variables as __maybe_unused.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard at st.com>
---
 drivers/gpu/drm/drm_atomic_helper.c | 36 ++++++++++++++++++------------------
 1 file changed, 18 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index aa16ea17ff9b..b69d17b0b9bd 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -262,7 +262,7 @@ steal_encoder(struct drm_atomic_state *state,
 	      struct drm_encoder *encoder)
 {
 	struct drm_crtc_state *crtc_state;
-	struct drm_connector *connector;
+	struct drm_connector __maybe_unused *connector;
 	struct drm_connector_state *old_connector_state, *new_connector_state;
 	int i;
 
@@ -412,7 +412,7 @@ mode_fixup(struct drm_atomic_state *state)
 {
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *new_crtc_state;
-	struct drm_connector *connector;
+	struct drm_connector __maybe_unused *connector;
 	struct drm_connector_state *new_conn_state;
 	int i;
 	int ret;
@@ -608,7 +608,7 @@ drm_atomic_helper_check_modeset(struct drm_device *dev,
 {
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *old_crtc_state, *new_crtc_state;
-	struct drm_connector *connector;
+	struct drm_connector __maybe_unused *connector;
 	struct drm_connector_state *old_connector_state, *new_connector_state;
 	int i, ret;
 	unsigned connectors_mask = 0;
@@ -984,7 +984,7 @@ crtc_needs_disable(struct drm_crtc_state *old_state,
 static void
 disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state)
 {
-	struct drm_connector *connector;
+	struct drm_connector __maybe_unused *connector;
 	struct drm_connector_state *old_conn_state, *new_conn_state;
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *old_crtc_state, *new_crtc_state;
@@ -1173,7 +1173,7 @@ crtc_set_mode(struct drm_device *dev, struct drm_atomic_state *old_state)
 {
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *new_crtc_state;
-	struct drm_connector *connector;
+	struct drm_connector __maybe_unused *connector;
 	struct drm_connector_state *new_conn_state;
 	int i;
 
@@ -1294,7 +1294,7 @@ void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev,
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *old_crtc_state;
 	struct drm_crtc_state *new_crtc_state;
-	struct drm_connector *connector;
+	struct drm_connector __maybe_unused *connector;
 	struct drm_connector_state *new_conn_state;
 	int i;
 
@@ -1384,7 +1384,7 @@ int drm_atomic_helper_wait_for_fences(struct drm_device *dev,
 				      struct drm_atomic_state *state,
 				      bool pre_swap)
 {
-	struct drm_plane *plane;
+	struct drm_plane __maybe_unused *plane;
 	struct drm_plane_state *new_plane_state;
 	int i, ret;
 
@@ -1431,7 +1431,7 @@ drm_atomic_helper_wait_for_vblanks(struct drm_device *dev,
 		struct drm_atomic_state *old_state)
 {
 	struct drm_crtc *crtc;
-	struct drm_crtc_state *old_crtc_state, *new_crtc_state;
+	struct drm_crtc_state __maybe_unused *old_crtc_state, *new_crtc_state;
 	int i, ret;
 	unsigned crtc_mask = 0;
 
@@ -1621,7 +1621,7 @@ static void commit_work(struct work_struct *work)
 int drm_atomic_helper_async_check(struct drm_device *dev,
 				   struct drm_atomic_state *state)
 {
-	struct drm_crtc *crtc;
+	struct drm_crtc __maybe_unused *crtc;
 	struct drm_crtc_state *crtc_state;
 	struct drm_plane *plane = NULL;
 	struct drm_plane_state *old_plane_state = NULL;
@@ -1982,9 +1982,9 @@ int drm_atomic_helper_setup_commit(struct drm_atomic_state *state,
 {
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *old_crtc_state, *new_crtc_state;
-	struct drm_connector *conn;
+	struct drm_connector __maybe_unused *conn;
 	struct drm_connector_state *old_conn_state, *new_conn_state;
-	struct drm_plane *plane;
+	struct drm_plane __maybe_unused *plane;
 	struct drm_plane_state *old_plane_state, *new_plane_state;
 	struct drm_crtc_commit *commit;
 	int i, ret;
@@ -2214,7 +2214,7 @@ EXPORT_SYMBOL(drm_atomic_helper_fake_vblank);
  */
 void drm_atomic_helper_commit_hw_done(struct drm_atomic_state *old_state)
 {
-	struct drm_crtc *crtc;
+	struct drm_crtc __maybe_unused *crtc;
 	struct drm_crtc_state *old_crtc_state, *new_crtc_state;
 	struct drm_crtc_commit *commit;
 	int i;
@@ -2300,7 +2300,7 @@ EXPORT_SYMBOL(drm_atomic_helper_commit_cleanup_done);
 int drm_atomic_helper_prepare_planes(struct drm_device *dev,
 				     struct drm_atomic_state *state)
 {
-	struct drm_connector *connector;
+	struct drm_connector __maybe_unused *connector;
 	struct drm_connector_state *new_conn_state;
 	struct drm_plane *plane;
 	struct drm_plane_state *new_plane_state;
@@ -2953,9 +2953,9 @@ int drm_atomic_helper_disable_all(struct drm_device *dev,
 {
 	struct drm_atomic_state *state;
 	struct drm_connector_state *conn_state;
-	struct drm_connector *conn;
+	struct drm_connector __maybe_unused *conn;
 	struct drm_plane_state *plane_state;
-	struct drm_plane *plane;
+	struct drm_plane __maybe_unused *plane;
 	struct drm_crtc_state *crtc_state;
 	struct drm_crtc *crtc;
 	int ret, i;
@@ -3199,11 +3199,11 @@ int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state,
 {
 	int i, ret;
 	struct drm_plane *plane;
-	struct drm_plane_state *new_plane_state;
+	struct drm_plane_state __maybe_unused *new_plane_state;
 	struct drm_connector *connector;
-	struct drm_connector_state *new_conn_state;
+	struct drm_connector_state __maybe_unused *new_conn_state;
 	struct drm_crtc *crtc;
-	struct drm_crtc_state *new_crtc_state;
+	struct drm_crtc_state __maybe_unused *new_crtc_state;
 
 	state->acquire_ctx = ctx;
 
-- 
2.15.0