fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / drivers / char / drm / drm_lock.c

diff --git a/drivers/char/drm/drm_lock.c b/drivers/char/drm/drm_lock.c
index f9e4530..e9993ba 100644 (file)
--- a/drivers/char/drm/drm_lock.c
+++ b/drivers/char/drm/drm_lock.c
@@ -155,6 +155,7 @@ int drm_unlock(struct inode *inode, struct file *filp,
        drm_file_t *priv = filp->private_data;
        drm_device_t *dev = priv->head->dev;
        drm_lock_t lock;
+       unsigned long irqflags;
 
        if (copy_from_user(&lock, (drm_lock_t __user *) arg, sizeof(lock)))
                return -EFAULT;
@@ -165,13 +166,23 @@ int drm_unlock(struct inode *inode, struct file *filp,
                return -EINVAL;
        }
 
+       spin_lock_irqsave(&dev->tasklet_lock, irqflags);
+
+       if (dev->locked_tasklet_func) {
+               dev->locked_tasklet_func(dev);
+
+               dev->locked_tasklet_func = NULL;
+       }
+
+       spin_unlock_irqrestore(&dev->tasklet_lock, irqflags);
+
        atomic_inc(&dev->counts[_DRM_STAT_UNLOCKS]);
 
        /* kernel_context_switch isn't used by any of the x86 drm
         * modules but is required by the Sparc driver.
         */
        if (dev->driver->kernel_context_switch_unlock)
-               dev->driver->kernel_context_switch_unlock(dev, &lock);
+               dev->driver->kernel_context_switch_unlock(dev);
        else {
                drm_lock_transfer(dev, &dev->lock.hw_lock->lock,
                                  DRM_KERNEL_CONTEXT);