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We only want drm to ever attach to the primary pci device.

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Intel 855 chips present the same pci id for both heads.  This prevents
us from attaching to the dummy second head.  All other chips that I
am aware of either only present a single pci id, or different ids
for each head so that we only match on the correct head.

Approved by:	kib@
MFC after:	2 weeks
This commit is contained in:
Robert Noland 2008-12-18 21:58:57 +00:00
parent a21e097b2e
commit c9e7b21284
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=186299
2 changed files with 5 additions and 0 deletions
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1
sys/dev/drm/drmP.h
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@ -87,6 +87,7 @@ struct drm_file;
#include <sys/agpio.h>
#include <sys/mutex.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <sys/selinfo.h>
#include <sys/bus.h>

4
sys/dev/drm/drm_drv.c
View File

@ -152,6 +152,10 @@ int drm_probe(device_t dev, drm_pci_id_list_t *idlist)
device = pci_get_device(dev);
#endif
if (pci_get_class(dev) != PCIC_DISPLAY
|| pci_get_subclass(dev) != PCIS_DISPLAY_VGA)
return ENXIO;
id_entry = drm_find_description(vendor, device, idlist);
if (id_entry != NULL) {
device_set_desc(dev, id_entry->name);