X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=drivers%2Fchar%2Fagp%2Ffrontend.c;h=0f2ed2aa2d815039d7cd6cd3dc26a20a4e15791e;hb=906568c9c668ff994f4078932ec6ae1e3950d1af;hp=17f520c9d4714aa90a145f200c31675b38699882;hpb=c7c6e9494cc9a4a5b1a2ca870ed4531ad2b98a83;p=powerpc.git

diff --git a/drivers/char/agp/frontend.c b/drivers/char/agp/frontend.c
index 17f520c9d4..0f2ed2aa2d 100644
--- a/drivers/char/agp/frontend.c
+++ b/drivers/char/agp/frontend.c
@@ -151,35 +151,12 @@ static void agp_add_seg_to_client(struct agp_client *client,
 	client->segments = seg;
 }
 
-/* Originally taken from linux/mm/mmap.c from the array
- * protection_map.
- * The original really should be exported to modules, or
- * some routine which does the conversion for you
- */
-
-static const pgprot_t my_protect_map[16] =
-{
-	__P000, __P001, __P010, __P011, __P100, __P101, __P110, __P111,
-	__S000, __S001, __S010, __S011, __S100, __S101, __S110, __S111
-};
-
 static pgprot_t agp_convert_mmap_flags(int prot)
 {
-#define _trans(x,bit1,bit2) \
-((bit1==bit2)?(x&bit1):(x&bit1)?bit2:0)
-
 	unsigned long prot_bits;
-	pgprot_t temp;
-
-	prot_bits = _trans(prot, PROT_READ, VM_READ) |
-	    _trans(prot, PROT_WRITE, VM_WRITE) |
-	    _trans(prot, PROT_EXEC, VM_EXEC);
-
-	prot_bits |= VM_SHARED;
 
-	temp = my_protect_map[prot_bits & 0x0000000f];
-
-	return temp;
+	prot_bits = calc_vm_prot_bits(prot) | VM_SHARED;
+	return vm_get_page_prot(prot_bits);
 }
 
 static int agp_create_segment(struct agp_client *client, struct agp_region *region)
@@ -592,7 +569,7 @@ static int agp_mmap(struct file *file, struct vm_area_struct *vma)
 	struct agp_file_private *priv = file->private_data;
 	struct agp_kern_info kerninfo;
 
-	down(&(agp_fe.agp_mutex));
+	mutex_lock(&(agp_fe.agp_mutex));
 
 	if (agp_fe.backend_acquired != TRUE)
 		goto out_eperm;
@@ -627,7 +604,7 @@ static int agp_mmap(struct file *file, struct vm_area_struct *vma)
 					    size, vma->vm_page_prot)) {
 			goto out_again;
 		}
-		up(&(agp_fe.agp_mutex));
+		mutex_unlock(&(agp_fe.agp_mutex));
 		return 0;
 	}
 
@@ -643,20 +620,20 @@ static int agp_mmap(struct file *file, struct vm_area_struct *vma)
 					    size, vma->vm_page_prot)) {
 			goto out_again;
 		}
-		up(&(agp_fe.agp_mutex));
+		mutex_unlock(&(agp_fe.agp_mutex));
 		return 0;
 	}
 
 out_eperm:
-	up(&(agp_fe.agp_mutex));
+	mutex_unlock(&(agp_fe.agp_mutex));
 	return -EPERM;
 
 out_inval:
-	up(&(agp_fe.agp_mutex));
+	mutex_unlock(&(agp_fe.agp_mutex));
 	return -EINVAL;
 
 out_again:
-	up(&(agp_fe.agp_mutex));
+	mutex_unlock(&(agp_fe.agp_mutex));
 	return -EAGAIN;
 }
 
@@ -664,7 +641,7 @@ static int agp_release(struct inode *inode, struct file *file)
 {
 	struct agp_file_private *priv = file->private_data;
 
-	down(&(agp_fe.agp_mutex));
+	mutex_lock(&(agp_fe.agp_mutex));
 
 	DBG("priv=%p", priv);
 
@@ -687,7 +664,7 @@ static int agp_release(struct inode *inode, struct file *file)
 	agp_remove_file_private(priv);
 	kfree(priv);
 	file->private_data = NULL;
-	up(&(agp_fe.agp_mutex));
+	mutex_unlock(&(agp_fe.agp_mutex));
 	return 0;
 }
 
@@ -698,7 +675,7 @@ static int agp_open(struct inode *inode, struct file *file)
 	struct agp_client *client;
 	int rc = -ENXIO;
 
-	down(&(agp_fe.agp_mutex));
+	mutex_lock(&(agp_fe.agp_mutex));
 
 	if (minor != AGPGART_MINOR)
 		goto err_out;
@@ -723,13 +700,13 @@ static int agp_open(struct inode *inode, struct file *file)
 	file->private_data = (void *) priv;
 	agp_insert_file_private(priv);
 	DBG("private=%p, client=%p", priv, client);
-	up(&(agp_fe.agp_mutex));
+	mutex_unlock(&(agp_fe.agp_mutex));
 	return 0;
 
 err_out_nomem:
 	rc = -ENOMEM;
 err_out:
-	up(&(agp_fe.agp_mutex));
+	mutex_unlock(&(agp_fe.agp_mutex));
 	return rc;
 }
 
@@ -781,7 +758,7 @@ static int agpioc_acquire_wrap(struct agp_file_private *priv)
 	if (agp_fe.current_controller != NULL)
 		return -EBUSY;
 
-	if(!agp_bridge)
+	if (!agp_bridge)
 		return -ENODEV;
 
         if (atomic_read(&agp_bridge->agp_in_use))
@@ -985,7 +962,7 @@ static int agp_ioctl(struct inode *inode, struct file *file,
 	int ret_val = -ENOTTY;
 
 	DBG("priv=%p, cmd=%x", curr_priv, cmd);
-	down(&(agp_fe.agp_mutex));
+	mutex_lock(&(agp_fe.agp_mutex));
 
 	if ((agp_fe.current_controller == NULL) &&
 	    (cmd != AGPIOC_ACQUIRE)) {
@@ -1055,11 +1032,11 @@ static int agp_ioctl(struct inode *inode, struct file *file,
 
 ioctl_out:
 	DBG("ioctl returns %d\n", ret_val);
-	up(&(agp_fe.agp_mutex));
+	mutex_unlock(&(agp_fe.agp_mutex));
 	return ret_val;
 }
 
-static struct file_operations agp_fops =
+static const struct file_operations agp_fops =
 {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
@@ -1081,7 +1058,7 @@ static struct miscdevice agp_miscdev =
 int agp_frontend_initialize(void)
 {
 	memset(&agp_fe, 0, sizeof(struct agp_front_data));
-	sema_init(&(agp_fe.agp_mutex), 1);
+	mutex_init(&(agp_fe.agp_mutex));
 
 	if (misc_register(&agp_miscdev)) {
 		printk(KERN_ERR PFX "unable to get minor: %d\n", AGPGART_MINOR);