patch-2.4.0-test9 linux/drivers/char/drm/i810_drv.c

• Lines: 236
• Date: Sun Oct 1 20:00:00 2000
• Orig file: v2.4.0-test8/linux/drivers/char/drm/i810_drv.c
• Orig date: Tue Sep 5 13:51:30 2000

diff -u --recursive --new-file v2.4.0-test8/linux/drivers/char/drm/i810_drv.c linux/drivers/char/drm/i810_drv.c
@@ -1,6 +1,6 @@
 /* i810_drv.c -- I810 driver -*- linux-c -*-
  * Created: Mon Dec 13 01:56:22 1999 by jhartmann@precisioninsight.com
- * 
+ *
  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
  * All Rights Reserved.
@@ -11,11 +11,11 @@
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
- * 
+ *
  * The above copyright notice and this permission notice (including the next
  * paragraph) shall be included in all copies or substantial portions of the
  * Software.
- * 
+ *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
@@ -35,7 +35,7 @@
 
 #define I810_NAME	 "i810"
 #define I810_DESC	 "Intel I810"
-#define I810_DATE	 "20000719"
+#define I810_DATE	 "20000928"
 #define I810_MAJOR	 1
 #define I810_MINOR	 1
 #define I810_PATCHLEVEL	 0
@@ -143,7 +143,7 @@
 static int i810_setup(drm_device_t *dev)
 {
 	int i;
-	
+
 	atomic_set(&dev->ioctl_count, 0);
 	atomic_set(&dev->vma_count, 0);
 	dev->buf_use	  = 0;
@@ -188,22 +188,22 @@
 #endif
 	dev->ctx_start	    = 0;
 	dev->lck_start	    = 0;
-	
+
 	dev->buf_rp	  = dev->buf;
 	dev->buf_wp	  = dev->buf;
 	dev->buf_end	  = dev->buf + DRM_BSZ;
 	dev->buf_async	  = NULL;
 	init_waitqueue_head(&dev->buf_readers);
 	init_waitqueue_head(&dev->buf_writers);
-			
+
 	DRM_DEBUG("\n");
-			
+
 	/* The kernel's context could be created here, but is now created
 	   in drm_dma_enqueue.	This is more resource-efficient for
 	   hardware that does not do DMA, but may mean that
 	   drm_select_queue fails between the time the interrupt is
 	   initialized and the time the queues are initialized. */
-			
+
 	return 0;
 }
 
@@ -218,15 +218,15 @@
 	DRM_DEBUG("\n");
 
 	if (dev->irq) i810_irq_uninstall(dev);
-	
+
 	down(&dev->struct_sem);
 	del_timer(&dev->timer);
-	
+
 	if (dev->devname) {
 		drm_free(dev->devname, strlen(dev->devname)+1, DRM_MEM_DRIVER);
 		dev->devname = NULL;
 	}
-	
+
 	if (dev->unique) {
 		drm_free(dev->unique, strlen(dev->unique)+1, DRM_MEM_DRIVER);
 		dev->unique = NULL;
@@ -244,7 +244,7 @@
 	if (dev->agp) {
 		drm_agp_mem_t *entry;
 		drm_agp_mem_t *nexte;
-		
+
 				/* Remove AGP resources, but leave dev->agp
                                    intact until r128_cleanup is called. */
 		for (entry = dev->agp->memory; entry; entry = nexte) {
@@ -254,10 +254,10 @@
 			drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
 		}
 		dev->agp->memory = NULL;
-		
+
 		if (dev->agp->acquired && drm_agp.release)
 			(*drm_agp.release)();
-		
+
 		dev->agp->acquired = 0;
 		dev->agp->enabled  = 0;
 	}
@@ -269,7 +269,7 @@
 		}
 		dev->vmalist = NULL;
 	}
-	
+
 				/* Clear map area and mtrr information */
 	if (dev->maplist) {
 		for (i = 0; i < dev->map_count; i++) {
@@ -305,7 +305,7 @@
 		dev->maplist   = NULL;
 		dev->map_count = 0;
 	}
-	
+
 	if (dev->queuelist) {
 		for (i = 0; i < dev->queue_count; i++) {
 			drm_waitlist_destroy(&dev->queuelist[i]->waitlist);
@@ -331,7 +331,7 @@
 		wake_up_interruptible(&dev->lock.lock_queue);
 	}
 	up(&dev->struct_sem);
-	
+
 	return 0;
 }
 
@@ -348,7 +348,7 @@
 	memset((void *)dev, 0, sizeof(*dev));
 	dev->count_lock	  = SPIN_LOCK_UNLOCKED;
 	sema_init(&dev->struct_sem, 1);
-	
+
 #ifdef MODULE
 	drm_parse_options(i810);
 #endif
@@ -402,7 +402,7 @@
 	drm_device_t	      *dev = &i810_device;
 
 	DRM_DEBUG("\n");
-	
+
 	drm_proc_cleanup();
 	if (misc_deregister(&i810_misc)) {
 		DRM_ERROR("Cannot unload module\n");
@@ -461,7 +461,7 @@
 {
 	drm_device_t  *dev    = &i810_device;
 	int	      retcode = 0;
-	
+
 	DRM_DEBUG("open_count = %d\n", dev->open_count);
 	if (!(retcode = drm_open_helper(inode, filp, dev))) {
 #if LINUX_VERSION_CODE < 0x020333
@@ -498,7 +498,7 @@
 		drm_lock_free(dev,
 			      &dev->lock.hw_lock->lock,
 			      _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
-		
+
 				/* FIXME: may require heavy-handed reset of
                                    hardware at this point, possibly
                                    processed via a callback to the X
@@ -508,6 +508,7 @@
 	   	DECLARE_WAITQUEUE(entry, current);
 	   	add_wait_queue(&dev->lock.lock_queue, &entry);
 		for (;;) {
+			current->state = TASK_INTERRUPTIBLE;
 			if (!dev->lock.hw_lock) {
 				/* Device has been unregistered */
 				retcode = -EINTR;
@@ -519,10 +520,9 @@
 				dev->lock.lock_time = jiffies;
 				atomic_inc(&dev->total_locks);
 				break;	/* Got lock */
-			}			
+			}
 				/* Contention */
 			atomic_inc(&dev->total_sleeps);
-			current->state = TASK_INTERRUPTIBLE;
 			schedule();
 			if (signal_pending(current)) {
 				retcode = -ERESTARTSYS;
@@ -545,7 +545,7 @@
 	if (priv->next) priv->next->prev = priv->prev;
 	else		dev->file_last	 = priv->prev;
 	up(&dev->struct_sem);
-	
+
 	drm_free(priv, sizeof(*priv), DRM_MEM_FILES);
 #if LINUX_VERSION_CODE < 0x020333
 	MOD_DEC_USE_COUNT; /* Needed before Linux 2.3.51 */
@@ -585,7 +585,7 @@
 	atomic_inc(&dev->ioctl_count);
 	atomic_inc(&dev->total_ioctl);
 	++priv->ioctl_count;
-	
+
 	DRM_DEBUG("pid = %d, cmd = 0x%02x, nr = 0x%02x, dev 0x%x, auth = %d\n",
 		  current->pid, cmd, nr, dev->device, priv->authenticated);
 
@@ -605,7 +605,7 @@
 			retcode = (func)(inode, filp, cmd, arg);
 		}
 	}
-	
+
 	atomic_dec(&dev->ioctl_count);
 	return retcode;
 }
@@ -619,7 +619,7 @@
 
 	if (copy_from_user(&lock, (drm_lock_t *)arg, sizeof(lock)))
 		return -EFAULT;
-	
+
 	if (lock.context == DRM_KERNEL_CONTEXT) {
 		DRM_ERROR("Process %d using kernel context %d\n",
 			  current->pid, lock.context);
@@ -643,7 +643,7 @@
 	atomic_inc(&dev->histo.lhld[drm_histogram_slot(get_cycles()
 						       - dev->lck_start)]);
 #endif
-	
+
 	unblock_all_signals();
 	return 0;
 }