atafb: test virtual screen range before subtraction on unsigned
[linux-2.6] / drivers / mca / mca-driver.c
1 /* -*- mode: c; c-basic-offset: 8 -*- */
2
3 /*
4  * MCA driver support functions for sysfs.
5  *
6  * (C) 2002 James Bottomley <James.Bottomley@HansenPartnership.com>
7  *
8 **-----------------------------------------------------------------------------
9 **  
10 **  This program is free software; you can redistribute it and/or modify
11 **  it under the terms of the GNU General Public License as published by
12 **  the Free Software Foundation; either version 2 of the License, or
13 **  (at your option) any later version.
14 **
15 **  This program is distributed in the hope that it will be useful,
16 **  but WITHOUT ANY WARRANTY; without even the implied warranty of
17 **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18 **  GNU General Public License for more details.
19 **
20 **  You should have received a copy of the GNU General Public License
21 **  along with this program; if not, write to the Free Software
22 **  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 **
24 **-----------------------------------------------------------------------------
25  */
26
27 #include <linux/device.h>
28 #include <linux/mca.h>
29 #include <linux/module.h>
30
31 int mca_register_driver(struct mca_driver *mca_drv)
32 {
33         int r;
34
35         if (MCA_bus) {
36                 mca_drv->driver.bus = &mca_bus_type;
37                 if ((r = driver_register(&mca_drv->driver)) < 0)
38                         return r;
39                 mca_drv->integrated_id = 0;
40         }
41
42         return 0;
43 }
44 EXPORT_SYMBOL(mca_register_driver);
45
46 int mca_register_driver_integrated(struct mca_driver *mca_driver,
47                                    int integrated_id)
48 {
49         int r = mca_register_driver(mca_driver);
50
51         if (!r)
52                 mca_driver->integrated_id = integrated_id;
53
54         return r;
55 }
56 EXPORT_SYMBOL(mca_register_driver_integrated);
57
58 void mca_unregister_driver(struct mca_driver *mca_drv)
59 {
60         if (MCA_bus)
61                 driver_unregister(&mca_drv->driver);
62 }
63 EXPORT_SYMBOL(mca_unregister_driver);