diff options
| -rw-r--r-- | bsd-core/drm_drv.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/bsd-core/drm_drv.c b/bsd-core/drm_drv.c index 794f32ea..d4d50e6a 100644 --- a/bsd-core/drm_drv.c +++ b/bsd-core/drm_drv.c @@ -131,6 +131,9 @@ static struct cdevsw drm_cdevsw = { .d_flags = D_TRACKCLOSE }; +int drm_msi = 1; /* Enable by default. */ +TUNABLE_INT("hw.drm.msi", &drm_msi); + static struct drm_msi_blacklist_entry drm_msi_blacklist[] = { {0x8086, 0x2772}, /* Intel i945G */ \ {0x8086, 0x27A2}, /* Intel i945GM */ \ @@ -215,7 +218,8 @@ int drm_attach(device_t nbdev, drm_pci_id_list_t *idlist) dev->pci_vendor = pci_get_vendor(dev->device); dev->pci_device = pci_get_device(dev->device); - if (!drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) { + if (drm_msi && + !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) { msicount = pci_msi_count(dev->device); DRM_DEBUG("MSI count = %d\n", msicount); if (msicount > 1) |