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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2008-03-26 12:09:02 +0100 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-04-21 09:50:08 +0200 |
| commit | 7fd097d42b90afadae4867db5d580bcd7b3b596d (patch) | |
| tree | 707e1b8ff7af5e298bd3208d4daeda089a6e93e7 /drivers/cdrom/cdrom.c | |
| parent | cdrom: protect cdrom_device_info list by mutex (diff) | |
| download | linux-7fd097d42b90afadae4867db5d580bcd7b3b596d.tar.xz linux-7fd097d42b90afadae4867db5d580bcd7b3b596d.zip | |
cdrom: use list_head for cdrom_device_info list
Use list_head for cdrom_device_info list instead of opencoded
singly list handling.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/cdrom/cdrom.c')
| -rw-r--r-- | drivers/cdrom/cdrom.c | 29 |
1 files changed, 6 insertions, 23 deletions
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c index 326ef1b4a4ea..c4213b7d0b20 100644 --- a/drivers/cdrom/cdrom.c +++ b/drivers/cdrom/cdrom.c @@ -362,7 +362,7 @@ static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information * static void cdrom_sysctl_register(void); -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) @@ -436,35 +436,18 @@ int register_cdrom(struct cdrom_device_info *cdi) 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) +int 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) @@ -3306,7 +3289,7 @@ static int cdrom_print_info(const char *header, int val, char *info, *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, @@ -3428,7 +3411,7 @@ static void cdrom_update_settings(void) struct cdrom_device_info *cdi; mutex_lock(&cdrom_mutex); - for (cdi = topCdromPtr; cdi != NULL; cdi = cdi->next) { + list_for_each_entry(cdi, &cdrom_list, list) { if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY)) cdi->options |= CDO_AUTO_CLOSE; else if (!autoclose) |