diff options
Diffstat (limited to 'drivers/gpu/drm/drm_fops.c')
| -rw-r--r-- | drivers/gpu/drm/drm_fops.c | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c index 2ca8df8b610..b744dad5c23 100644 --- a/drivers/gpu/drm/drm_fops.c +++ b/drivers/gpu/drm/drm_fops.c @@ -41,6 +41,7 @@ /* from BKL pushdown: note that nothing else serializes idr_find() */ DEFINE_MUTEX(drm_global_mutex); +EXPORT_SYMBOL(drm_global_mutex); static int drm_open_helper(struct inode *inode, struct file *filp, struct drm_device * dev); @@ -135,15 +136,9 @@ int drm_open(struct inode *inode, struct file *filp) retcode = drm_open_helper(inode, filp, dev); if (!retcode) { atomic_inc(&dev->counts[_DRM_STAT_OPENS]); - spin_lock(&dev->count_lock); - if (!dev->open_count++) { - spin_unlock(&dev->count_lock); + if (!dev->open_count++) retcode = drm_setup(dev); - goto out; - } - spin_unlock(&dev->count_lock); } -out: if (!retcode) { mutex_lock(&dev->struct_mutex); if (minor->type == DRM_MINOR_LEGACY) { @@ -570,18 +565,14 @@ int drm_release(struct inode *inode, struct file *filp) */ atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); - spin_lock(&dev->count_lock); if (!--dev->open_count) { if (atomic_read(&dev->ioctl_count)) { DRM_ERROR("Device busy: %d\n", atomic_read(&dev->ioctl_count)); retcode = -EBUSY; - goto out; - } - retcode = drm_lastclose(dev); + } else + retcode = drm_lastclose(dev); } -out: - spin_unlock(&dev->count_lock); mutex_unlock(&drm_global_mutex); return retcode; |