LXR linux/drivers/s390/char/hmcdrv

   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
  21MODULE_LICENSE("GPL");
  22MODULE_AUTHOR("Copyright 2013 IBM Corporation");
  23MODULE_DESCRIPTION("HMC drive DVD access");
  24
  25/*
  26 * module parameter 'cachesize'
  27 */
  28static size_t hmcdrv_mod_cachesize = HMCDRV_CACHE_SIZE_DFLT;
  29module_param_named(cachesize, hmcdrv_mod_cachesize, ulong, S_IRUGO);
  30
  31/**
  32 * hmcdrv_mod_init() - module init function
  33 */
  34static 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 */
  57static void __exit hmcdrv_mod_exit(void)
  58{
  59        hmcdrv_dev_exit();
  60        hmcdrv_cache_shutdown();
  61}
  62
  63module_init(hmcdrv_mod_init);
  64module_exit(hmcdrv_mod_exit);
  65