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SCSI: fc class: fix fc_transport_init error handling

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commit 48de68a40a upstream.

If transport_class_register fails we should unregister any
registered classes, or we will leak memory or other
resources.

I did a quick modprobe of scsi_transport_fc to test the
patch.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Mike Christie
2009-11-17 21:25:16 -06:00
committed by Greg Kroah-Hartman
parent 1ab0714daa
commit fdf2675111
1 changed files with 14 additions and 3 deletions
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17
drivers/scsi/scsi_transport_fc.c
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@@ -648,11 +648,22 @@ static __init int fc_transport_init(void)
return error;
error = transport_class_register(&fc_vport_class);
if (error)
return error;
goto unreg_host_class;
error = transport_class_register(&fc_rport_class);
if (error)
return error;
return transport_class_register(&fc_transport_class);
goto unreg_vport_class;
error = transport_class_register(&fc_transport_class);
if (error)
goto unreg_rport_class;
return 0;
unreg_rport_class:
transport_class_unregister(&fc_rport_class);
unreg_vport_class:
transport_class_unregister(&fc_vport_class);
unreg_host_class:
transport_class_unregister(&fc_host_class);
return error;
}
static void __exit fc_transport_exit(void)