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From: Daniel Vetter <daniel.vetter@ffwll.ch>
To: DRI Development <dri-devel@lists.freedesktop.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>,
	Intel Graphics Development <intel-gfx@lists.freedesktop.org>,
	Daniel Vetter <daniel.vetter@intel.com>
Subject: [PATCH 06/14] drm: Extract drm_master_relase
Date: Tue, 14 Jun 2016 20:51:01 +0200	[thread overview]
Message-ID: <1465930269-7883-7-git-send-email-daniel.vetter@ffwll.ch> (raw)
In-Reply-To: <1465930269-7883-1-git-send-email-daniel.vetter@ffwll.ch>

Like with drm_master_open protect it with a check for primary_client
to make it clear that this can't happen on render/control nodes.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
---
 drivers/gpu/drm/drm_auth.c     | 37 +++++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/drm_fops.c     | 35 ++---------------------------------
 drivers/gpu/drm/drm_internal.h |  1 +
 3 files changed, 40 insertions(+), 33 deletions(-)

diff --git a/drivers/gpu/drm/drm_auth.c b/drivers/gpu/drm/drm_auth.c
index 9c1e2081cd58..e015a7edb154 100644
--- a/drivers/gpu/drm/drm_auth.c
+++ b/drivers/gpu/drm/drm_auth.c
@@ -243,6 +243,43 @@ int drm_master_open(struct drm_file *file_priv)
 	return ret;
 }
 
+void drm_master_release(struct drm_file *file_priv)
+{
+	struct drm_device *dev = file_priv->minor->dev;
+
+	mutex_lock(&dev->master_mutex);
+	if (file_priv->is_master) {
+		struct drm_master *master = file_priv->master;
+
+		/*
+		 * Since the master is disappearing, so is the
+		 * possibility to lock.
+		 */
+		mutex_lock(&dev->struct_mutex);
+		if (master->lock.hw_lock) {
+			if (dev->sigdata.lock == master->lock.hw_lock)
+				dev->sigdata.lock = NULL;
+			master->lock.hw_lock = NULL;
+			master->lock.file_priv = NULL;
+			wake_up_interruptible_all(&master->lock.lock_queue);
+		}
+		mutex_unlock(&dev->struct_mutex);
+
+		if (file_priv->minor->master == file_priv->master) {
+			/* drop the reference held my the minor */
+			if (dev->driver->master_drop)
+				dev->driver->master_drop(dev, file_priv, true);
+			drm_master_put(&file_priv->minor->master);
+		}
+	}
+
+	/* drop the master reference held by the file priv */
+	if (file_priv->master)
+		drm_master_put(&file_priv->master);
+	file_priv->is_master = 0;
+	mutex_unlock(&dev->master_mutex);
+}
+
 struct drm_master *drm_master_get(struct drm_master *master)
 {
 	kref_get(&master->refcount);
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c
index e2522672719a..f3b2677de882 100644
--- a/drivers/gpu/drm/drm_fops.c
+++ b/drivers/gpu/drm/drm_fops.c
@@ -411,43 +411,12 @@ int drm_release(struct inode *inode, struct file *filp)
 
 	drm_legacy_ctxbitmap_flush(dev, file_priv);
 
-	mutex_lock(&dev->master_mutex);
-
-	if (file_priv->is_master) {
-		struct drm_master *master = file_priv->master;
-
-		/*
-		 * Since the master is disappearing, so is the
-		 * possibility to lock.
-		 */
-		mutex_lock(&dev->struct_mutex);
-		if (master->lock.hw_lock) {
-			if (dev->sigdata.lock == master->lock.hw_lock)
-				dev->sigdata.lock = NULL;
-			master->lock.hw_lock = NULL;
-			master->lock.file_priv = NULL;
-			wake_up_interruptible_all(&master->lock.lock_queue);
-		}
-		mutex_unlock(&dev->struct_mutex);
-
-		if (file_priv->minor->master == file_priv->master) {
-			/* drop the reference held my the minor */
-			if (dev->driver->master_drop)
-				dev->driver->master_drop(dev, file_priv, true);
-			drm_master_put(&file_priv->minor->master);
-		}
-	}
-
-	/* drop the master reference held by the file priv */
-	if (file_priv->master)
-		drm_master_put(&file_priv->master);
-	file_priv->is_master = 0;
-	mutex_unlock(&dev->master_mutex);
+	if (drm_is_primary_client(file_priv))
+		drm_master_release(file_priv);
 
 	if (dev->driver->postclose)
 		dev->driver->postclose(dev, file_priv);
 
-
 	if (drm_core_check_feature(dev, DRIVER_PRIME))
 		drm_prime_destroy_file_private(&file_priv->prime);
 
diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h
index 2b9a94f679ed..38401d406532 100644
--- a/drivers/gpu/drm/drm_internal.h
+++ b/drivers/gpu/drm/drm_internal.h
@@ -67,6 +67,7 @@ int drm_setmaster_ioctl(struct drm_device *dev, void *data,
 int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
 			 struct drm_file *file_priv);
 int drm_master_open(struct drm_file *file_priv);
+void drm_master_release(struct drm_file *file_priv);
 
 /* drm_sysfs.c */
 extern struct class *drm_class;
-- 
2.8.1

_______________________________________________
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Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

  parent reply	other threads:[~2016-06-14 18:51 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-14 18:50 [PATCH 00/14] Cruft removal around drm_master Daniel Vetter
2016-06-14 18:50 ` [PATCH 01/14] drm: Nuke legacy maps debugfs files Daniel Vetter
2016-06-15 11:23   ` Chris Wilson
2016-06-15 12:00   ` Emil Velikov
2016-06-14 18:50 ` [PATCH 02/14] drm: Hide hw.lock cleanup in filp->release better Daniel Vetter
2016-06-15 11:26   ` [Intel-gfx] " Chris Wilson
2016-06-15 12:10   ` Emil Velikov
2016-06-14 18:50 ` [PATCH 03/14] drm: Link directly from drm_master to drm_device Daniel Vetter
2016-06-15 11:29   ` Chris Wilson
2016-06-15 12:50   ` [Intel-gfx] " Emil Velikov
2016-06-15 15:45     ` Daniel Vetter
2016-06-16 20:04       ` Emil Velikov
2016-06-14 18:50 ` [PATCH 04/14] drm: Move master functions into drm_auth.c Daniel Vetter
2016-06-15 11:31   ` Chris Wilson
2016-06-15 15:47     ` Daniel Vetter
2016-06-14 18:51 ` [PATCH 05/14] drm: Extract drm_master_open Daniel Vetter
2016-06-15 11:41   ` [Intel-gfx] " Chris Wilson
2016-06-14 18:51 ` Daniel Vetter [this message]
2016-06-15 11:43   ` [Intel-gfx] [PATCH 06/14] drm: Extract drm_master_relase Chris Wilson
2016-06-16  8:18     ` Daniel Vetter
2016-06-14 18:51 ` [PATCH 07/14] drm: Only do the hw.lock cleanup in master_relase for !MODESET Daniel Vetter
2016-06-15 11:48   ` Chris Wilson
2016-06-15 15:49     ` [Intel-gfx] " Daniel Vetter
2016-06-14 18:51 ` [PATCH 08/14] drm: Move authmagic cleanup into drm_master_release Daniel Vetter
2016-06-15 11:51   ` Chris Wilson
2016-06-14 18:51 ` [PATCH 09/14] drm: Protect authmagic with master_mutex Daniel Vetter
2016-06-15 11:54   ` [Intel-gfx] " Chris Wilson
2016-06-15 15:52     ` Daniel Vetter
2016-06-14 18:51 ` [PATCH 10/14] drm: Mark authmagic ioctls as unlocked Daniel Vetter
2016-06-15 11:55   ` [Intel-gfx] " Chris Wilson
2016-06-14 18:51 ` [PATCH 11/14] drm: Mark set/drop master ioctl " Daniel Vetter
2016-06-15 11:56   ` [Intel-gfx] " Chris Wilson
2016-06-14 18:51 ` [PATCH 12/14] drm: Move master pointer from drm_minor to drm_device Daniel Vetter
2016-06-15 12:10   ` [Intel-gfx] " Chris Wilson
2016-06-15 16:01     ` Daniel Vetter
2016-06-15 16:33       ` Chris Wilson
2016-06-15 19:54         ` [Intel-gfx] " Daniel Vetter
2016-06-14 18:51 ` [PATCH 13/14] drm: Clean up drm_crtc.h Daniel Vetter
2016-06-14 18:51 ` [PATCH 14/14] drm: Use dev->name as fallback for dev->unique Daniel Vetter
2016-06-15  5:42 ` ✓ Ro.CI.BAT: success for Cruft removal around drm_master Patchwork

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