diff options
Diffstat (limited to 'bsd-core/drm_vm.c')
| -rw-r--r-- | bsd-core/drm_vm.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/bsd-core/drm_vm.c b/bsd-core/drm_vm.c index 419b3cb1..05ac7b15 100644 --- a/bsd-core/drm_vm.c +++ b/bsd-core/drm_vm.c @@ -49,10 +49,11 @@ paddr_t drm_mmap(dev_t kdev, off_t offset, int prot) if (!priv->authenticated) return DRM_ERR(EACCES); - DRM_SPINLOCK(&dev->dma_lock); if (dev->dma && offset >= 0 && offset < ptoa(dev->dma->page_count)) { drm_device_dma_t *dma = dev->dma; + DRM_SPINLOCK(&dev->dma_lock); + if (dma->pagelist != NULL) { unsigned long page = offset >> PAGE_SHIFT; unsigned long phys = dma->pagelist[page]; @@ -68,8 +69,8 @@ paddr_t drm_mmap(dev_t kdev, off_t offset, int prot) DRM_SPINUNLOCK(&dev->dma_lock); return -1; } + DRM_SPINUNLOCK(&dev->dma_lock); } - DRM_SPINUNLOCK(&dev->dma_lock); /* A sequential search of a linked list is fine here because: 1) there will only be @@ -89,7 +90,7 @@ paddr_t drm_mmap(dev_t kdev, off_t offset, int prot) DRM_DEBUG("can't find map\n"); return -1; } - if (((map->flags&_DRM_RESTRICTED) && DRM_SUSER(DRM_CURPROC))) { + if (((map->flags&_DRM_RESTRICTED) && !DRM_SUSER(DRM_CURPROC))) { DRM_UNLOCK(); DRM_DEBUG("restricted map\n"); return -1; |