diff options
Diffstat (limited to 'drivers/char/agp/amd64-agp.c')
| -rw-r--r-- | drivers/char/agp/amd64-agp.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c index 2fb2e6cc322..34cf04e2179 100644 --- a/drivers/char/agp/amd64-agp.c +++ b/drivers/char/agp/amd64-agp.c @@ -728,6 +728,7 @@ int __init agp_amd64_init(void) if (agp_off) return -EINVAL; + err = pci_register_driver(&agp_amd64_pci_driver); if (err < 0) return err; @@ -764,19 +765,25 @@ int __init agp_amd64_init(void) return err; } +static int __init agp_amd64_mod_init(void) +{ + if (gart_iommu_aperture) + return agp_bridges_found ? 0 : -ENODEV; + + return agp_amd64_init(); +} + static void __exit agp_amd64_cleanup(void) { + if (gart_iommu_aperture) + return; if (aperture_resource) release_resource(aperture_resource); pci_unregister_driver(&agp_amd64_pci_driver); } -/* On AMD64 the PCI driver needs to initialize this driver early - for the IOMMU, so it has to be called via a backdoor. */ -#ifndef CONFIG_GART_IOMMU -module_init(agp_amd64_init); +module_init(agp_amd64_mod_init); module_exit(agp_amd64_cleanup); -#endif MODULE_AUTHOR("Dave Jones <davej@redhat.com>, Andi Kleen"); module_param(agp_try_unsupported, bool, 0); |