From ae8af4cc10c9936ee9373103fd4f171415673362 Mon Sep 17 00:00:00 2001 From: anholt Date: Fri, 24 Jun 2005 22:21:28 +0000 Subject: 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 --- sys/dev/drm/radeon_cp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'sys/dev/drm') 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; -- cgit v1.1