diff options
Diffstat (limited to 'linux-core')
| -rw-r--r-- | linux-core/drm_drv.c | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c index 78cd3782..3d369b28 100644 --- a/linux-core/drm_drv.c +++ b/linux-core/drm_drv.c @@ -84,9 +84,6 @@ #ifndef __HAVE_SG #define __HAVE_SG 0 #endif -#ifndef __HAVE_KERNEL_CTX_SWITCH -#define __HAVE_KERNEL_CTX_SWITCH 0 -#endif #ifndef DRIVER_PREINIT #define DRIVER_PREINIT() @@ -1006,12 +1003,6 @@ int DRM(lock)( struct inode *inode, struct file *filp, DRIVER_DMA_QUIESCENT(); } #endif -#if __HAVE_KERNEL_CTX_SWITCH - if ( dev->last_context != lock.context ) { - DRM(context_switch)(dev, dev->last_context, - lock.context); - } -#endif } DRM_DEBUG( "%d %s\n", lock.context, ret ? "interrupted" : "has lock" ); @@ -1038,25 +1029,6 @@ int DRM(unlock)( struct inode *inode, struct file *filp, atomic_inc( &dev->counts[_DRM_STAT_UNLOCKS] ); -#if __HAVE_KERNEL_CTX_SWITCH - /* We no longer really hold it, but if we are the next - * agent to request it then we should just be able to - * take it immediately and not eat the ioctl. - */ - dev->lock.filp = 0; - { - __volatile__ unsigned int *plock = &dev->lock.hw_lock->lock; - unsigned int old, new, prev, ctx; - - ctx = lock.context; - do { - old = *plock; - new = ctx; - prev = cmpxchg(plock, old, new); - } while (prev != old); - } - wake_up_interruptible(&dev->lock.lock_queue); -#else DRM(lock_transfer)( dev, &dev->lock.hw_lock->lock, DRM_KERNEL_CONTEXT ); #if __HAVE_DMA_SCHEDULE @@ -1071,7 +1043,6 @@ int DRM(unlock)( struct inode *inode, struct file *filp, DRM_ERROR( "\n" ); } } -#endif /* !__HAVE_KERNEL_CTX_SWITCH */ unblock_all_signals(); return 0; |