switch drm to use Linux mutexes instead of semaphore.

I hope the fallback compat code works if not shout at me.

1 files changed, 9 insertions, 9 deletions

diff --git a/linux-core/drm_ioctl.c b/linux-core/drm_ioctl.c
index e0998d53..54024e1b 100644
--- a/linux-core/drm_ioctl.c
+++ b/linux-core/drm_ioctl.c
@@ -188,9 +188,9 @@ int drm_getmap(struct inode *inode, struct file *filp,
 		return -EFAULT;
 	idx = map.offset;
 
-	down(&dev->struct_sem);
+	mutex_lock(&dev->struct_mutex);
 	if (idx < 0) {
-		up(&dev->struct_sem);
+		mutex_unlock(&dev->struct_mutex);
 		return -EINVAL;
 	}
 
@@ -203,7 +203,7 @@ int drm_getmap(struct inode *inode, struct file *filp,
 		i++;
 	}
 	if (!r_list || !r_list->map) {
-		up(&dev->struct_sem);
+		mutex_unlock(&dev->struct_mutex);
 		return -EINVAL;
 	}
 
@@ -213,7 +213,7 @@ int drm_getmap(struct inode *inode, struct file *filp,
 	map.flags = r_list->map->flags;
 	map.handle = (void *)(unsigned long) r_list->user_token;
 	map.mtrr = r_list->map->mtrr;
-	up(&dev->struct_sem);
+	mutex_unlock(&dev->struct_mutex);
 
 	if (copy_to_user(argp, &map, sizeof(map)))
 		return -EFAULT;
@@ -247,11 +247,11 @@ int drm_getclient(struct inode *inode, struct file *filp,
 	if (copy_from_user(&client, argp, sizeof(client)))
 		return -EFAULT;
 	idx = client.idx;
-	down(&dev->struct_sem);
+	mutex_lock(&dev->struct_mutex);
 	for (i = 0, pt = dev->file_first; i < idx && pt; i++, pt = pt->next) ;
 
 	if (!pt) {
-		up(&dev->struct_sem);
+		mutex_unlock(&dev->struct_mutex);
 		return -EINVAL;
 	}
 	client.auth = pt->authenticated;
@@ -259,7 +259,7 @@ int drm_getclient(struct inode *inode, struct file *filp,
 	client.uid = pt->uid;
 	client.magic = pt->magic;
 	client.iocs = pt->ioctl_count;
-	up(&dev->struct_sem);
+	mutex_unlock(&dev->struct_mutex);
 
 	if (copy_to_user(argp, &client, sizeof(client)))
 		return -EFAULT;
@@ -286,7 +286,7 @@ int drm_getstats(struct inode *inode, struct file *filp,
 
 	memset(&stats, 0, sizeof(stats));
 
-	down(&dev->struct_sem);
+	mutex_lock(&dev->struct_mutex);
 
 	for (i = 0; i < dev->counters; i++) {
 		if (dev->types[i] == _DRM_STAT_LOCK)
@@ -299,7 +299,7 @@ int drm_getstats(struct inode *inode, struct file *filp,
 
 	stats.count = dev->counters;
 
-	up(&dev->struct_sem);
+	mutex_unlock(&dev->struct_mutex);
 
 	if (copy_to_user((drm_stats_t __user *) arg, &stats, sizeof(stats)))
 		return -EFAULT;