linux-kernel - [PATCH 18/29] drm/atomic-helper: Change parameter name of drm_atomic_helper_wait_for

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Message-Id: <20250115-bridge-connector-v1-18-9a2fecd886a6@kernel.org>
Date: Wed, 15 Jan 2025 22:05:25 +0100
From: Maxime Ripard <mripard@...nel.org>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>, 
 Simona Vetter <simona@...ll.ch>, Andrzej Hajda <andrzej.hajda@...el.com>, 
 Neil Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>, 
 Laurent Pinchart <Laurent.pinchart@...asonboard.com>, 
 Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, 
 Douglas Anderson <dianders@...omium.org>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Maxime Ripard <mripard@...nel.org>
Subject: [PATCH 18/29] drm/atomic-helper: Change parameter name of
 drm_atomic_helper_wait_for_vblanks()

drm_atomic_helper_wait_for_vblanks() waits for vblank events on all the
CRTCs affected by a commit. It takes the drm_atomic_state being
committed as a parameter.

However, that parameter name is called (and documented) as old_state,
which is pretty confusing. Let's rename that variable as state.

Signed-off-by: Maxime Ripard <mripard@...nel.org>
---
 drivers/gpu/drm/drm_atomic_helper.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index d642bbc074bd364256409c91649f8d8aa10f5023..581fd0f14ba0aa2a9d0334cad49575de3fb5fb20 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -1656,11 +1656,11 @@ int drm_atomic_helper_wait_for_fences(struct drm_device *dev,
 EXPORT_SYMBOL(drm_atomic_helper_wait_for_fences);
 
 /**
  * drm_atomic_helper_wait_for_vblanks - wait for vblank on CRTCs
  * @dev: DRM device
- * @old_state: atomic state object with old state structures
+ * @state: atomic state object being committed
  *
  * Helper to, after atomic commit, wait for vblanks on all affected
  * CRTCs (ie. before cleaning up old framebuffers using
  * drm_atomic_helper_cleanup_planes()). It will only wait on CRTCs where the
  * framebuffers have actually changed to optimize for the legacy cursor and
@@ -1670,44 +1670,44 @@ EXPORT_SYMBOL(drm_atomic_helper_wait_for_fences);
  * drm_atomic_helper_setup_commit() should look at
  * drm_atomic_helper_wait_for_flip_done() as an alternative.
  */
 void
 drm_atomic_helper_wait_for_vblanks(struct drm_device *dev,
-		struct drm_atomic_state *old_state)
+				   struct drm_atomic_state *state)
 {
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *old_crtc_state, *new_crtc_state;
 	int i, ret;
 	unsigned int crtc_mask = 0;
 
 	 /*
 	  * Legacy cursor ioctls are completely unsynced, and userspace
 	  * relies on that (by doing tons of cursor updates).
 	  */
-	if (old_state->legacy_cursor_update)
+	if (state->legacy_cursor_update)
 		return;
 
-	for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) {
+	for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
 		if (!new_crtc_state->active)
 			continue;
 
 		ret = drm_crtc_vblank_get(crtc);
 		if (ret != 0)
 			continue;
 
 		crtc_mask |= drm_crtc_mask(crtc);
-		old_state->crtcs[i].last_vblank_count = drm_crtc_vblank_count(crtc);
+		state->crtcs[i].last_vblank_count = drm_crtc_vblank_count(crtc);
 	}
 
-	for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) {
+	for_each_old_crtc_in_state(state, crtc, old_crtc_state, i) {
 		if (!(crtc_mask & drm_crtc_mask(crtc)))
 			continue;
 
 		ret = wait_event_timeout(dev->vblank[i].queue,
-				old_state->crtcs[i].last_vblank_count !=
-					drm_crtc_vblank_count(crtc),
-				msecs_to_jiffies(100));
+					 state->crtcs[i].last_vblank_count !=
+						drm_crtc_vblank_count(crtc),
+					 msecs_to_jiffies(100));
 
 		WARN(!ret, "[CRTC:%d:%s] vblank wait timed out\n",
 		     crtc->base.id, crtc->name);
 
 		drm_crtc_vblank_put(crtc);

-- 
2.47.1