diff options
Diffstat (limited to 'drivers/char/drm/drm_lock.c')
| -rw-r--r-- | drivers/char/drm/drm_lock.c | 35 |
1 files changed, 15 insertions, 20 deletions
diff --git a/drivers/char/drm/drm_lock.c b/drivers/char/drm/drm_lock.c index 12dcdd1..0998723 100644 --- a/drivers/char/drm/drm_lock.c +++ b/drivers/char/drm/drm_lock.c @@ -53,7 +53,6 @@ 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; @@ -72,9 +71,9 @@ 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_irqsave(&dev->lock.spinlock, irqflags); + spin_lock_bh(&dev->lock.spinlock); dev->lock.user_waiters++; - spin_unlock_irqrestore(&dev->lock.spinlock, irqflags); + spin_unlock_bh(&dev->lock.spinlock); for (;;) { __set_current_state(TASK_INTERRUPTIBLE); if (!dev->lock.hw_lock) { @@ -96,9 +95,9 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv) break; } } - spin_lock_irqsave(&dev->lock.spinlock, irqflags); + spin_lock_bh(&dev->lock.spinlock); dev->lock.user_waiters--; - spin_unlock_irqrestore(&dev->lock.spinlock, irqflags); + spin_unlock_bh(&dev->lock.spinlock); __set_current_state(TASK_RUNNING); remove_wait_queue(&dev->lock.lock_queue, &entry); @@ -199,9 +198,8 @@ 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_irqsave(&lock_data->spinlock, irqflags); + spin_lock_bh(&lock_data->spinlock); do { old = *lock; if (old & _DRM_LOCK_HELD) @@ -213,7 +211,7 @@ int drm_lock_take(struct drm_lock_data *lock_data, } prev = cmpxchg(lock, old, new); } while (prev != old); - spin_unlock_irqrestore(&lock_data->spinlock, irqflags); + spin_unlock_bh(&lock_data->spinlock); if (_DRM_LOCKING_CONTEXT(old) == context) { if (old & _DRM_LOCK_HELD) { @@ -274,16 +272,15 @@ 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_irqsave(&lock_data->spinlock, irqflags); + spin_lock_bh(&lock_data->spinlock); if (lock_data->kernel_waiters != 0) { drm_lock_transfer(lock_data, 0); lock_data->idle_has_lock = 1; - spin_unlock_irqrestore(&lock_data->spinlock, irqflags); + spin_unlock_bh(&lock_data->spinlock); return 1; } - spin_unlock_irqrestore(&lock_data->spinlock, irqflags); + spin_unlock_bh(&lock_data->spinlock); do { old = *lock; @@ -347,20 +344,19 @@ static int drm_notifier(void *priv) void drm_idlelock_take(struct drm_lock_data *lock_data) { int ret = 0; - unsigned long irqflags; - spin_lock_irqsave(&lock_data->spinlock, irqflags); + spin_lock_bh(&lock_data->spinlock); lock_data->kernel_waiters++; if (!lock_data->idle_has_lock) { - spin_unlock_irqrestore(&lock_data->spinlock, irqflags); + spin_unlock_bh(&lock_data->spinlock); ret = drm_lock_take(lock_data, DRM_KERNEL_CONTEXT); - spin_lock_irqsave(&lock_data->spinlock, irqflags); + spin_lock_bh(&lock_data->spinlock); if (ret == 1) lock_data->idle_has_lock = 1; } - spin_unlock_irqrestore(&lock_data->spinlock, irqflags); + spin_unlock_bh(&lock_data->spinlock); } EXPORT_SYMBOL(drm_idlelock_take); @@ -368,9 +364,8 @@ 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_irqsave(&lock_data->spinlock, irqflags); + spin_lock_bh(&lock_data->spinlock); if (--lock_data->kernel_waiters == 0) { if (lock_data->idle_has_lock) { do { @@ -381,7 +376,7 @@ void drm_idlelock_release(struct drm_lock_data *lock_data) lock_data->idle_has_lock = 0; } } - spin_unlock_irqrestore(&lock_data->spinlock, irqflags); + spin_unlock_bh(&lock_data->spinlock); } EXPORT_SYMBOL(drm_idlelock_release); |