diff options
Diffstat (limited to 'bsd-core/drm_pci.c')
| -rw-r--r-- | bsd-core/drm_pci.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/bsd-core/drm_pci.c b/bsd-core/drm_pci.c index 0f431dd6..a33f5f9c 100644 --- a/bsd-core/drm_pci.c +++ b/bsd-core/drm_pci.c @@ -58,6 +58,13 @@ drm_pci_alloc(drm_device_t *dev, size_t size, size_t align, dma_addr_t maxaddr) drm_dma_handle_t *dmah; int ret; + /* Need power-of-two alignment, so fail the allocation if it isn't. */ + if ((align & (align - 1)) != 0) { + DRM_ERROR("drm_pci_alloc with non-power-of-two alignment %d\n", + (int)align); + return NULL; + } + dmah = malloc(sizeof(drm_dma_handle_t), M_DRM, M_ZERO | M_NOWAIT); if (dmah == NULL) return NULL; |