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| author | David Herrmann <dh.herrmann@gmail.com> | 2014-07-22 20:46:09 +0400 |
|---|---|---|
| committer | David Herrmann <dh.herrmann@gmail.com> | 2014-08-05 18:07:50 +0400 |
| commit | 48ba813701eb14b3008edefef4a0789b328e278c (patch) | |
| tree | cab45fc97db3eb800338196add945c6f47643cee /drivers/gpu/drm/drm_fops.c | |
| parent | 9f8d21ea276177547725a60cefc1b6da742f14d3 (diff) | |
| download | linux-48ba813701eb14b3008edefef4a0789b328e278c.tar.xz | |
drm: drop redundant drm_file->is_master
The drm_file->is_master field is redundant as it's equivalent to:
drm_file->master && drm_file->master == drm_file->minor->master
1) "=>"
Whenever we set drm_file->is_master, we also set:
drm_file->minor->master = drm_file->master;
Whenever we clear drm_file->is_master, we also call:
drm_master_put(&drm_file->minor->master);
which implicitly clears it to NULL.
2) "<="
minor->master cannot be set if it is non-NULL. Therefore, it stays as
is unless a file drops it.
If minor->master is NULL, it is only set by places that also adjust
drm_file->is_master.
Therefore, we can safely drop is_master and replace it by an inline helper
that matches:
drm_file->master && drm_file->master == drm_file->minor->master
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/drm_fops.c')
| -rw-r--r-- | drivers/gpu/drm/drm_fops.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c index 55143f7747f3..53435e07fa8d 100644 --- a/drivers/gpu/drm/drm_fops.c +++ b/drivers/gpu/drm/drm_fops.c @@ -233,7 +233,6 @@ static int drm_open_helper(struct file *filp, struct drm_minor *minor) goto out_close; } - priv->is_master = 1; /* take another reference for the copy in the local file priv */ priv->master = drm_master_get(priv->minor->master); priv->authenticated = 1; @@ -461,7 +460,7 @@ int drm_release(struct inode *inode, struct file *filp) mutex_lock(&dev->master_mutex); - if (file_priv->is_master) { + if (drm_is_master(file_priv)) { struct drm_master *master = file_priv->master; struct drm_file *temp; @@ -497,7 +496,6 @@ int drm_release(struct inode *inode, struct file *filp) /* 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); mutex_lock(&dev->struct_mutex); |