drm/i915: Filter pci devices based on PCI_CLASS_DISPLAY_VGA

[karo-tx-linux.git] / drivers / gpu / drm / drm_drv.c

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 96f416afc3f69b474fe685014573435600b85f4c..3ab1e9cc4692fce873b925a7fb7816acc0173710 100644 (file)
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -266,11 +266,19 @@ int drm_init(struct drm_driver *driver)
        for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) {
                pid = (struct pci_device_id *)&driver->pci_driver.id_table[i];
 
+               /* Loop around setting up a DRM device for each PCI device
+                * matching our ID and device class.  If we had the internal
+                * function that pci_get_subsys and pci_get_class used, we'd
+                * be able to just pass pid in instead of doing a two-stage
+                * thing.
+                */
                pdev = NULL;
-               /* pass back in pdev to account for multiple identical cards */
                while ((pdev =
                        pci_get_subsys(pid->vendor, pid->device, pid->subvendor,
                                       pid->subdevice, pdev)) != NULL) {
+                       if ((pdev->class & pid->class_mask) != pid->class)
+                               continue;
+
                        /* stealth mode requires a manual probe */
                        pci_dev_get(pdev);
                        drm_get_dev(pdev, pid, driver);