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| author | anholt <anholt@FreeBSD.org> | 2005-06-24 22:21:28 +0000 |
|---|---|---|
| committer | anholt <anholt@FreeBSD.org> | 2005-06-24 22:21:28 +0000 |
| commit | ae8af4cc10c9936ee9373103fd4f171415673362 (patch) | |
| tree | ca14e68358722ebb5d4d26c02d65dfea7df09547 /sys/dev/drm/radeon_cp.c | |
| parent | 23c82e526bffc119e69cab44576152ec817fa330 (diff) | |
| download | FreeBSD-src-ae8af4cc10c9936ee9373103fd4f171415673362.zip FreeBSD-src-ae8af4cc10c9936ee9373103fd4f171415673362.tar.gz | |
Mark the permanent map for radeon registers read-only. Failure to set this flag
allowed writing to the registers by any user that can open the DRI device, and
therefore ability to initiate DMA. This came in with the merge from DRI CVS on
2005-04-15.
Approved by: re (scottl)
Obtained from: DRM CVS
Diffstat (limited to 'sys/dev/drm/radeon_cp.c')
| -rw-r--r-- | sys/dev/drm/radeon_cp.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/dev/drm/radeon_cp.c b/sys/dev/drm/radeon_cp.c index 48626bf..6e8b430 100644 --- a/sys/dev/drm/radeon_cp.c +++ b/sys/dev/drm/radeon_cp.c @@ -2032,7 +2032,8 @@ int radeon_preinit(struct drm_device *dev, unsigned long flags) } ret = drm_initmap(dev, drm_get_resource_start(dev, 2), - drm_get_resource_len(dev, 2), 2, _DRM_REGISTERS, 0); + drm_get_resource_len(dev, 2), 2, _DRM_REGISTERS, + _DRM_READ_ONLY); if (ret != 0) return ret; |
