X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fchar%2Fdrm%2Fdrm_lock.c;h=12dcdd1832f080b57574d02ecd4acfc6076ecd88;hb=bda0c0afa7a694bb1459fd023515aca681e4d79a;hp=bea2a7d5b2b22f695d3c6131d2068450ed55f074;hpb=ec2626815bf9a9922e49820b03e670e833f3ca3c;p=linux-2.6

diff --git a/drivers/char/drm/drm_lock.c b/drivers/char/drm/drm_lock.c
index bea2a7d5b2..12dcdd1832 100644
--- a/drivers/char/drm/drm_lock.c
+++ b/drivers/char/drm/drm_lock.c
@@ -53,6 +53,7 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
 	DECLARE_WAITQUEUE(entry, current);
 	struct drm_lock *lock = data;
 	int ret = 0;
+	unsigned long irqflags;
 
 	++file_priv->lock_count;
 
@@ -71,9 +72,9 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
 			return -EINVAL;
 
 	add_wait_queue(&dev->lock.lock_queue, &entry);
-	spin_lock(&dev->lock.spinlock);
+	spin_lock_irqsave(&dev->lock.spinlock, irqflags);
 	dev->lock.user_waiters++;
-	spin_unlock(&dev->lock.spinlock);
+	spin_unlock_irqrestore(&dev->lock.spinlock, irqflags);
 	for (;;) {
 		__set_current_state(TASK_INTERRUPTIBLE);
 		if (!dev->lock.hw_lock) {
@@ -95,9 +96,9 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
 			break;
 		}
 	}
-	spin_lock(&dev->lock.spinlock);
+	spin_lock_irqsave(&dev->lock.spinlock, irqflags);
 	dev->lock.user_waiters--;
-	spin_unlock(&dev->lock.spinlock);
+	spin_unlock_irqrestore(&dev->lock.spinlock, irqflags);
 	__set_current_state(TASK_RUNNING);
 	remove_wait_queue(&dev->lock.lock_queue, &entry);
 
@@ -198,8 +199,9 @@ int drm_lock_take(struct drm_lock_data *lock_data,
 {
 	unsigned int old, new, prev;
 	volatile unsigned int *lock = &lock_data->hw_lock->lock;
+	unsigned long irqflags;
 
-	spin_lock(&lock_data->spinlock);
+	spin_lock_irqsave(&lock_data->spinlock, irqflags);
 	do {
 		old = *lock;
 		if (old & _DRM_LOCK_HELD)
@@ -211,7 +213,7 @@ int drm_lock_take(struct drm_lock_data *lock_data,
 		}
 		prev = cmpxchg(lock, old, new);
 	} while (prev != old);
-	spin_unlock(&lock_data->spinlock);
+	spin_unlock_irqrestore(&lock_data->spinlock, irqflags);
 
 	if (_DRM_LOCKING_CONTEXT(old) == context) {
 		if (old & _DRM_LOCK_HELD) {
@@ -272,15 +274,16 @@ int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context)
 {
 	unsigned int old, new, prev;
 	volatile unsigned int *lock = &lock_data->hw_lock->lock;
+	unsigned long irqflags;
 
-	spin_lock(&lock_data->spinlock);
+	spin_lock_irqsave(&lock_data->spinlock, irqflags);
 	if (lock_data->kernel_waiters != 0) {
 		drm_lock_transfer(lock_data, 0);
 		lock_data->idle_has_lock = 1;
-		spin_unlock(&lock_data->spinlock);
+		spin_unlock_irqrestore(&lock_data->spinlock, irqflags);
 		return 1;
 	}
-	spin_unlock(&lock_data->spinlock);
+	spin_unlock_irqrestore(&lock_data->spinlock, irqflags);
 
 	do {
 		old = *lock;
@@ -344,19 +347,20 @@ static int drm_notifier(void *priv)
 void drm_idlelock_take(struct drm_lock_data *lock_data)
 {
 	int ret = 0;
+	unsigned long irqflags;
 
-	spin_lock(&lock_data->spinlock);
+	spin_lock_irqsave(&lock_data->spinlock, irqflags);
 	lock_data->kernel_waiters++;
 	if (!lock_data->idle_has_lock) {
 
-		spin_unlock(&lock_data->spinlock);
+		spin_unlock_irqrestore(&lock_data->spinlock, irqflags);
 		ret = drm_lock_take(lock_data, DRM_KERNEL_CONTEXT);
-		spin_lock(&lock_data->spinlock);
+		spin_lock_irqsave(&lock_data->spinlock, irqflags);
 
 		if (ret == 1)
 			lock_data->idle_has_lock = 1;
 	}
-	spin_unlock(&lock_data->spinlock);
+	spin_unlock_irqrestore(&lock_data->spinlock, irqflags);
 }
 EXPORT_SYMBOL(drm_idlelock_take);
 
@@ -364,8 +368,9 @@ void drm_idlelock_release(struct drm_lock_data *lock_data)
 {
 	unsigned int old, prev;
 	volatile unsigned int *lock = &lock_data->hw_lock->lock;
+	unsigned long irqflags;
 
-	spin_lock(&lock_data->spinlock);
+	spin_lock_irqsave(&lock_data->spinlock, irqflags);
 	if (--lock_data->kernel_waiters == 0) {
 		if (lock_data->idle_has_lock) {
 			do {
@@ -376,7 +381,7 @@ void drm_idlelock_release(struct drm_lock_data *lock_data)
 			lock_data->idle_has_lock = 0;
 		}
 	}
-	spin_unlock(&lock_data->spinlock);
+	spin_unlock_irqrestore(&lock_data->spinlock, irqflags);
 }
 EXPORT_SYMBOL(drm_idlelock_release);