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Code Issues Releases Activity

Mark the permanent map for radeon registers read-only. Failure to set this flag

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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
This commit is contained in:
Eric Anholt 2005-06-24 22:21:28 +00:00
parent ff50922b16
commit f3eb3a3b13
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=147590
1 changed files with 2 additions and 1 deletions
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3
sys/dev/drm/radeon_cp.c
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@ -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;