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x86/agp: Fix amd64-agp module initialization regression 

This fixes the regression introduced by commit
42590a7501 ("x86/agp: Fix
agp_amd64_init and agp_amd64_cleanup").

The commit 61684ceaad fixed the
above regression but it's not enough. When amd64-agp is built as
a module, AGP isn't initialized, iommu is initialized, all the
aperture is owned by the iommu.

Reported-by: Marin Mitov <mitov@issp.bas.bg>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Tested-by: Marin Mitov <mitov@issp.bas.bg>
LKML-Reference: <20100204090802S.fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
FUJITA Tomonori 2010-02-04 14:43:38 +09:00 committed by Ingo Molnar
parent ab09809f2e
commit 06df6dafb5
1 changed files with 4 additions and 1 deletions
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5
drivers/char/agp/amd64-agp.c
View File

@ -767,16 +767,19 @@ int __init agp_amd64_init(void)
static int __init agp_amd64_mod_init(void)
{
#ifndef MODULE
if (gart_iommu_aperture)
return agp_bridges_found ? 0 : -ENODEV;
#endif
return agp_amd64_init();
}
static void __exit agp_amd64_cleanup(void)
{
#ifndef MODULE
if (gart_iommu_aperture)
return;
#endif
if (aperture_resource)
release_resource(aperture_resource);
pci_unregister_driver(&agp_amd64_pci_driver);