commit c1a8557e1da6e7d8bf8f77cb1b47c077f5c2a67d
Author: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
Date:   Mon Feb 26 16:29:43 2007 +0200

    KVM: Fix bogus failure in kvm.ko module initialization
    
    A bogus 'return r' can cause an otherwise successful module load to fail.
    This both denies users the use of kvm, and it also denies them the use of
    their machine, as it leaves a filesystem registered with its callbacks
    pointing into now-freed module memory.
    
    Fix by returning a zero like a good module.
    
    Thanks to Richard Lucassen <mailinglists-+AO6ZX++/Fdg9hUCZPvPmw@public.gmane.org> (?) for reporting
    the problem and for providing access to a machine which exhibited it.
    
    Signed-off-by: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>

diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index e48b4d7..ca82ba3 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -2540,7 +2540,7 @@ static __init int kvm_init(void)
 	bad_page_address = page_to_pfn(bad_page) << PAGE_SHIFT;
 	memset(__va(bad_page_address), 0, PAGE_SIZE);
 
-	return r;
+	return 0;
 
 out:
 	kvm_exit_debug();