drivers/s390/char/hmcdrv_mod.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *    HMC Drive DVD Module
   4  *
   5  *    Copyright IBM Corp. 2013
   6  *    Author(s): Ralf Hoppe (rhoppe@de.ibm.com)
   7  */
   8
   9 #define KMSG_COMPONENT "hmcdrv"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/moduleparam.h>
  15 #include <linux/stat.h>
  16
  17 #include "hmcdrv_ftp.h"
  18 #include "hmcdrv_dev.h"
  19 #include "hmcdrv_cache.h"
  20
  21 MODULE_LICENSE("GPL");
  22 MODULE_AUTHOR("Copyright 2013 IBM Corporation");
  23 MODULE_DESCRIPTION("HMC drive DVD access");
  24
  25 /*
  26  * module parameter 'cachesize'
  27  */
  28 static size_t hmcdrv_mod_cachesize = HMCDRV_CACHE_SIZE_DFLT;
  29 module_param_named(cachesize, hmcdrv_mod_cachesize, ulong, S_IRUGO);
  30
  31 /**
  32  * hmcdrv_mod_init() - module init function
  33  */
  34 static int __init hmcdrv_mod_init(void)
  35 {
  36         int rc = hmcdrv_ftp_probe(); /* perform w/o cache */
  37
  38         if (rc)
  39                 return rc;
  40
  41         rc = hmcdrv_cache_startup(hmcdrv_mod_cachesize);
  42
  43         if (rc)
  44                 return rc;
  45
  46         rc = hmcdrv_dev_init();
  47
  48         if (rc)
  49                 hmcdrv_cache_shutdown();
  50
  51         return rc;
  52 }
  53
  54 /**
  55  * hmcdrv_mod_exit() - module exit function
  56  */
  57 static void __exit hmcdrv_mod_exit(void)
  58 {
  59         hmcdrv_dev_exit();
  60         hmcdrv_cache_shutdown();
  61 }
  62
  63 module_init(hmcdrv_mod_init);
  64 module_exit(hmcdrv_mod_exit);