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authorAkinobu Mita <akinobu.mita@gmail.com>2008-03-26 12:09:02 +0100
committerJens Axboe <jens.axboe@oracle.com>2008-04-21 09:50:08 +0200
commit7fd097d42b90afadae4867db5d580bcd7b3b596d (patch)
tree707e1b8ff7af5e298bd3208d4daeda089a6e93e7 /drivers/cdrom
parent032d8d90ba23e1770604bbb1102ec77f5aa8ae44 (diff)
downloadlinux-7fd097d42b90afadae4867db5d580bcd7b3b596d.tar.gz
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')
-rw-r--r--drivers/cdrom/cdrom.c29
1 files changed, 6 insertions, 23 deletions
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index 326ef1b4a4e..c4213b7d0b2 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)