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path: root/drivers/char/agp/amd64-agp.c
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Diffstat (limited to 'drivers/char/agp/amd64-agp.c')
-rw-r--r--drivers/char/agp/amd64-agp.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c
index 2fb2e6cc322a..5aa7a586a7ff 100644
--- a/drivers/char/agp/amd64-agp.c
+++ b/drivers/char/agp/amd64-agp.c
@@ -725,9 +725,14 @@ static struct pci_driver agp_amd64_pci_driver = {
int __init agp_amd64_init(void)
{
int err = 0;
+ static int done = 0;
if (agp_off)
return -EINVAL;
+
+ if (done++)
+ return agp_bridges_found ? 0 : -ENODEV;
+
err = pci_register_driver(&agp_amd64_pci_driver);
if (err < 0)
return err;
@@ -771,12 +776,8 @@ static void __exit agp_amd64_cleanup(void)
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_exit(agp_amd64_cleanup);
-#endif
MODULE_AUTHOR("Dave Jones <davej@redhat.com>, Andi Kleen");
module_param(agp_try_unsupported, bool, 0);