drivers/net/wireless/wl12xx/wl12xx_platform_data.c

   1 /*
   2  * This file is part of wl12xx
   3  *
   4  * Copyright (C) 2010-2011 Texas Instruments, Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * version 2 as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  18  * 02110-1301 USA
  19  *
  20  */
  21
  22 #include <linux/module.h>
  23 #include <linux/err.h>
  24 #include <linux/wl12xx.h>
  25
  26 static struct wl12xx_platform_data *platform_data;
  27
  28 int __init wl12xx_set_platform_data(const struct wl12xx_platform_data *data)
  29 {
  30         if (platform_data)
  31                 return -EBUSY;
  32         if (!data)
  33                 return -EINVAL;
  34
  35         platform_data = kmemdup(data, sizeof(*data), GFP_KERNEL);
  36         if (!platform_data)
  37                 return -ENOMEM;
  38
  39         return 0;
  40 }
  41
  42 struct wl12xx_platform_data *wl12xx_get_platform_data(void)
  43 {
  44         if (!platform_data)
  45                 return ERR_PTR(-ENODEV);
  46
  47         return platform_data;
  48 }
  49 EXPORT_SYMBOL(wl12xx_get_platform_data);