patch-2.4.0-test8 linux/drivers/char/drm/gamma_dma.c

• Lines: 56
• Date: Tue Aug 29 21:09:10 2000
• Orig file: v2.4.0-test7/linux/drivers/char/drm/gamma_dma.c
• Orig date: Thu Jul 27 17:38:00 2000

diff -u --recursive --new-file v2.4.0-test7/linux/drivers/char/drm/gamma_dma.c linux/drivers/char/drm/gamma_dma.c
@@ -586,7 +586,8 @@
 	int		  retcode   = 0;
 	drm_dma_t	  d;
 
-	copy_from_user_ret(&d, (drm_dma_t *)arg, sizeof(d), -EFAULT);
+	if (copy_from_user(&d, (drm_dma_t *)arg, sizeof(d)))
+		return -EFAULT;
 	DRM_DEBUG("%d %d: %d send, %d req\n",
 		  current->pid, d.context, d.send_count, d.request_count);
 
@@ -621,7 +622,8 @@
 
 	DRM_DEBUG("%d returning, granted = %d\n",
 		  current->pid, d.granted_count);
-	copy_to_user_ret((drm_dma_t *)arg, &d, sizeof(d), -EFAULT);
+	if (copy_to_user((drm_dma_t *)arg, &d, sizeof(d)))
+		return -EFAULT;
 
 	return retcode;
 }
@@ -710,7 +712,8 @@
 	drm_control_t	ctl;
 	int		retcode;
 	
-	copy_from_user_ret(&ctl, (drm_control_t *)arg, sizeof(ctl), -EFAULT);
+	if (copy_from_user(&ctl, (drm_control_t *)arg, sizeof(ctl)))
+		return -EFAULT;
 	
 	switch (ctl.func) {
 	case DRM_INST_HANDLER:
@@ -742,7 +745,8 @@
 	dev->lck_start = start = get_cycles();
 #endif
 
-	copy_from_user_ret(&lock, (drm_lock_t *)arg, sizeof(lock), -EFAULT);
+	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",
@@ -804,6 +808,15 @@
 	drm_flush_unblock(dev, lock.context, lock.flags); /* cleanup phase */
 	
 	if (!ret) {
+		sigemptyset(&dev->sigmask);
+		sigaddset(&dev->sigmask, SIGSTOP);
+		sigaddset(&dev->sigmask, SIGTSTP);
+		sigaddset(&dev->sigmask, SIGTTIN);
+		sigaddset(&dev->sigmask, SIGTTOU);
+		dev->sigdata.context = lock.context;
+		dev->sigdata.lock    = dev->lock.hw_lock;
+		block_all_signals(drm_notifier, &dev->sigdata, &dev->sigmask);
+
 		if (lock.flags & _DRM_LOCK_READY)
 			gamma_dma_ready(dev);
 		if (lock.flags & _DRM_LOCK_QUIESCENT) {