From 2e54a007622ac75d63bdc1dd71d435446293f4a9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=3D=3Futf-8=3Fq=3FMichel=5FD=3DC3=3DA4nzer=3F=3D?= Date: Tue, 24 Oct 2006 23:08:16 +1000 Subject: drm: Add support for interrupt triggered driver callback with lock held to DRM core. Signed-off-by: Dave Airlie --- drivers/char/drm/drm_lock.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/char/drm/drm_lock.c') diff --git a/drivers/char/drm/drm_lock.c b/drivers/char/drm/drm_lock.c index f9e45303498d..e0abe5c68423 100644 --- a/drivers/char/drm/drm_lock.c +++ b/drivers/char/drm/drm_lock.c @@ -155,6 +155,7 @@ int drm_unlock(struct inode *inode, struct file *filp, drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->head->dev; drm_lock_t lock; + unsigned int irqflags; if (copy_from_user(&lock, (drm_lock_t __user *) arg, sizeof(lock))) return -EFAULT; @@ -165,6 +166,16 @@ int drm_unlock(struct inode *inode, struct file *filp, return -EINVAL; } + spin_lock_irqsave(&dev->tasklet_lock, irqflags); + + if (dev->locked_tasklet_func) { + dev->locked_tasklet_func(dev); + + dev->locked_tasklet_func = NULL; + } + + spin_unlock_irqrestore(&dev->tasklet_lock, irqflags); + atomic_inc(&dev->counts[_DRM_STAT_UNLOCKS]); /* kernel_context_switch isn't used by any of the x86 drm -- cgit v1.2.2