static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di);
-#ifdef CONFIG_SYSCTL
static void cdrom_sysctl_register(void);
-#endif /* CONFIG_SYSCTL */
-static struct cdrom_device_info *topCdromPtr;
+
+static LIST_HEAD(cdrom_list);
static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi,
struct packet_command *cgc)
cdinfo(CD_OPEN, "entering register_cdrom\n");
if (cdo->open == NULL || cdo->release == NULL)
- return -2;
+ return -EINVAL;
if (!banner_printed) {
printk(KERN_INFO "Uniform CD-ROM driver " REVISION "\n");
banner_printed = 1;
-#ifdef CONFIG_SYSCTL
cdrom_sysctl_register();
-#endif /* CONFIG_SYSCTL */
}
ENSURE(drive_status, CDC_DRIVE_STATUS );
ENSURE(get_last_session, CDC_MULTI_SESSION);
ENSURE(get_mcn, CDC_MCN);
ENSURE(reset, CDC_RESET);
- ENSURE(audio_ioctl, CDC_PLAY_AUDIO);
ENSURE(generic_packet, CDC_GENERIC_PACKET);
cdi->mc_flags = 0;
cdo->n_minors = 0;
cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
mutex_lock(&cdrom_mutex);
- cdi->next = topCdromPtr;
- topCdromPtr = cdi;
+ list_add(&cdi->list, &cdrom_list);
mutex_unlock(&cdrom_mutex);
return 0;
}
#undef ENSURE
-int unregister_cdrom(struct cdrom_device_info *unreg)
+void unregister_cdrom(struct cdrom_device_info *cdi)
{
- struct cdrom_device_info *cdi, *prev;
cdinfo(CD_OPEN, "entering unregister_cdrom\n");
- prev = NULL;
mutex_lock(&cdrom_mutex);
- cdi = topCdromPtr;
- while (cdi && cdi != unreg) {
- prev = cdi;
- cdi = cdi->next;
- }
-
- if (cdi == NULL) {
- mutex_unlock(&cdrom_mutex);
- return -2;
- }
- if (prev)
- prev->next = cdi->next;
- else
- topCdromPtr = cdi->next;
-
+ list_del(&cdi->list);
mutex_unlock(&cdrom_mutex);
if (cdi->exit)
cdi->ops->n_minors--;
cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
- return 0;
}
int cdrom_get_media_event(struct cdrom_device_info *cdi,
is the default case! */
cdinfo(CD_OPEN, "bummer. wrong media type.\n");
cdinfo(CD_WARNING, "pid %d must open device O_NONBLOCK!\n",
- (unsigned int)current->pid);
+ (unsigned int)task_pid_nr(current));
ret=-EMEDIUMTYPE;
goto clean_up_and_return;
}
/* This code is similar to that in open_for_data. The routine is called
whenever an audio play operation is requested.
*/
-int check_for_audio_disc(struct cdrom_device_info * cdi,
- struct cdrom_device_ops * cdo)
+static int check_for_audio_disc(struct cdrom_device_info * cdi,
+ struct cdrom_device_ops * cdo)
{
int ret;
tracktype tracks;
return 0;
}
-/* Admittedly, the logic below could be performed in a nicer way. */
int cdrom_release(struct cdrom_device_info *cdi, struct file *fp)
{
struct cdrom_device_ops *cdo = cdi->ops;
int opened_for_data;
- cdinfo(CD_CLOSE, "entering cdrom_release\n");
+ cdinfo(CD_CLOSE, "entering cdrom_release\n");
if (cdi->use_count > 0)
cdi->use_count--;
- if (cdi->use_count == 0)
+
+ if (cdi->use_count == 0) {
cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name);
- if (cdi->use_count == 0)
cdrom_dvd_rw_close_write(cdi);
- if (cdi->use_count == 0 &&
- (cdo->capability & CDC_LOCK) && !keeplocked) {
- cdinfo(CD_CLOSE, "Unlocking door!\n");
- cdo->lock_door(cdi, 0);
+
+ if ((cdo->capability & CDC_LOCK) && !keeplocked) {
+ cdinfo(CD_CLOSE, "Unlocking door!\n");
+ cdo->lock_door(cdi, 0);
+ }
}
+
opened_for_data = !(cdi->options & CDO_USE_FFLAGS) ||
!(fp && fp->f_flags & O_NONBLOCK);
tracks->xa=0;
tracks->error=0;
cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n");
- if (!CDROM_CAN(CDC_PLAY_AUDIO)) {
- tracks->error=CDS_NO_INFO;
- return;
- }
/* Grab the TOC header so we can see how many tracks there are */
if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) {
if (ret == -ENOMEDIUM)
if (ret)
break;
- memset(rq->cmd, 0, sizeof(rq->cmd));
rq->cmd[0] = GPCMD_READ_CD;
rq->cmd[1] = 1 << 2;
rq->cmd[2] = (lba >> 24) & 0xff;
/* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
- if (!CDROM_CAN(CDC_PLAY_AUDIO))
- return -ENOSYS;
if (copy_from_user(&q, argp, sizeof(q)))
return -EFAULT;
/* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
- if (!CDROM_CAN(CDC_PLAY_AUDIO))
- return -ENOSYS;
if (copy_from_user(&header, argp, sizeof(header)))
return -EFAULT;
/* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
- if (!CDROM_CAN(CDC_PLAY_AUDIO))
- return -ENOSYS;
if (copy_from_user(&entry, argp, sizeof(entry)))
return -EFAULT;
return -ENOSYS;
}
-static inline
-int msf_to_lba(char m, char s, char f)
-{
- return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET;
-}
-
/*
* Required when we need to use READ_10 to issue other than 2048 block
* reads
*pos += ret;
- for (cdi = topCdromPtr; cdi; cdi = cdi->next) {
+ list_for_each_entry(cdi, &cdrom_list, list) {
switch (option) {
case CTL_NAME:
ret = scnprintf(info + *pos, max_size - *pos,
{
struct cdrom_device_info *cdi;
- for (cdi = topCdromPtr; cdi != NULL; cdi = cdi->next) {
+ mutex_lock(&cdrom_mutex);
+ list_for_each_entry(cdi, &cdrom_list, list) {
if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
cdi->options |= CDO_AUTO_CLOSE;
else if (!autoclose)
else
cdi->options &= ~CDO_CHECK_TYPE;
}
+ mutex_unlock(&cdrom_mutex);
}
static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp,
unregister_sysctl_table(cdrom_sysctl_header);
}
+#else /* CONFIG_SYSCTL */
+
+static void cdrom_sysctl_register(void)
+{
+}
+
+static void cdrom_sysctl_unregister(void)
+{
+}
+
#endif /* CONFIG_SYSCTL */
static int __init cdrom_init(void)
{
-#ifdef CONFIG_SYSCTL
cdrom_sysctl_register();
-#endif
+
return 0;
}
static void __exit cdrom_exit(void)
{
printk(KERN_INFO "Uniform CD-ROM driver unloaded\n");
-#ifdef CONFIG_SYSCTL
cdrom_sysctl_unregister();
-#endif
}
module_init(cdrom_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff