diff options
Diffstat (limited to 'drivers/char/drm/mga_drv.c')
| -rw-r--r-- | drivers/char/drm/mga_drv.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/char/drm/mga_drv.c b/drivers/char/drm/mga_drv.c index 30c8880fb..a3072c39e 100644 --- a/drivers/char/drm/mga_drv.c +++ b/drivers/char/drm/mga_drv.c @@ -36,6 +36,8 @@ #endif #include "drmP.h" #include "mga_drv.h" +#include <linux/sched.h> +#include <linux/smp_lock.h> EXPORT_SYMBOL(mga_init); EXPORT_SYMBOL(mga_cleanup); @@ -498,9 +500,11 @@ int mga_open(struct inode *inode, struct file *filp) int mga_release(struct inode *inode, struct file *filp) { drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->dev; + drm_device_t *dev; int retcode = 0; + lock_kernel(); + dev = priv->dev; DRM_DEBUG("pid = %d, device = 0x%x, open_count = %d\n", current->pid, dev->device, dev->open_count); @@ -571,12 +575,14 @@ int mga_release(struct inode *inode, struct file *filp) atomic_read(&dev->ioctl_count), dev->blocked); spin_unlock(&dev->count_lock); + unlock_kernel(); return -EBUSY; } spin_unlock(&dev->count_lock); - return mga_takedown(dev); - } - spin_unlock(&dev->count_lock); + retcode = mga_takedown(dev); + } else + spin_unlock(&dev->count_lock); + unlock_kernel(); return retcode; } |