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| author | Dave Airlie <airlied@gmail.com> | 2014-08-08 01:30:53 +0400 |
|---|---|---|
| committer | Dave Airlie <airlied@gmail.com> | 2014-08-08 01:30:53 +0400 |
| commit | 7963e9db1b1f842fdc53309baa8714d38e9f5681 (patch) | |
| tree | 9829f2d38b6df9f5a07c349766e77b002cb34539 /drivers/gpu/drm/drm_fops.c | |
| parent | fa1d0ee69ca8c123dd791d52830a2e146985ce85 (diff) | |
| download | linux-7963e9db1b1f842fdc53309baa8714d38e9f5681.tar.xz | |
Revert "drm: drop redundant drm_file->is_master"
This reverts commit 48ba813701eb14b3008edefef4a0789b328e278c.
Thanks to Chris:
"drm_file->is_master is not synomous with having drm_file->master ==
drm_file->minor->master. This is because drm_file->master is the same
for all drm_files of the same generation and so when there is a master,
every drm_file believes itself to be the master. Confusion ensues and
things go pear shaped when one file is closed and there is no master
anymore."
Conflicts:
drivers/gpu/drm/drm_drv.c
drivers/gpu/drm/drm_stub.c
Diffstat (limited to 'drivers/gpu/drm/drm_fops.c')
| -rw-r--r-- | drivers/gpu/drm/drm_fops.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c index 4b060942cb3c..79d5221c6e41 100644 --- a/drivers/gpu/drm/drm_fops.c +++ b/drivers/gpu/drm/drm_fops.c @@ -194,6 +194,7 @@ 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; @@ -425,7 +426,7 @@ int drm_release(struct inode *inode, struct file *filp) mutex_lock(&dev->master_mutex); - if (drm_is_master(file_priv)) { + if (file_priv->is_master) { struct drm_master *master = file_priv->master; /** @@ -453,6 +454,7 @@ 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); if (dev->driver->postclose) |