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[MTD] Use list_for_each_entry[_safe] where appropriate.

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Janitorial work to remove temporary pointers and make some functions a bit
more readable.

Signed-off-by: Chris Malley <mail@chrismalley.co.uk>
Reviewed-By: Jörn Engel <joern@logfs.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
Chris Malley 2008-05-19 20:11:50 +01:00 committed by David Woodhouse
parent 59018b6d2a
commit 71a928c0e5
3 changed files with 19 additions and 42 deletions
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32
drivers/mtd/mtd_blkdevs.c
View file

@ -210,7 +210,7 @@ static struct block_device_operations mtd_blktrans_ops = {
int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
{
struct mtd_blktrans_ops *tr = new->tr;
struct list_head *this;
struct mtd_blktrans_dev *d;
int last_devnum = -1;
struct gendisk *gd;
@ -219,8 +219,7 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
BUG();
}
list_for_each(this, &tr->devs) {
struct mtd_blktrans_dev *d = list_entry(this, struct mtd_blktrans_dev, list);
list_for_each_entry(d, &tr->devs, list) {
if (new->devnum == -1) {
/* Use first free number */
if (d->devnum != last_devnum+1) {
@ -307,33 +306,24 @@ int del_mtd_blktrans_dev(struct mtd_blktrans_dev *old)
static void blktrans_notify_remove(struct mtd_info *mtd)
{
struct list_head *this, *this2, *next;
list_for_each(this, &blktrans_majors) {
struct mtd_blktrans_ops *tr = list_entry(this, struct mtd_blktrans_ops, list);
list_for_each_safe(this2, next, &tr->devs) {
struct mtd_blktrans_dev *dev = list_entry(this2, struct mtd_blktrans_dev, list);
struct mtd_blktrans_ops *tr;
struct mtd_blktrans_dev *dev, *next;
list_for_each_entry(tr, &blktrans_majors, list)
list_for_each_entry_safe(dev, next, &tr->devs, list)
if (dev->mtd == mtd)
tr->remove_dev(dev);
}
}
}
static void blktrans_notify_add(struct mtd_info *mtd)
{
struct list_head *this;
struct mtd_blktrans_ops *tr;
if (mtd->type == MTD_ABSENT)
return;
list_for_each(this, &blktrans_majors) {
struct mtd_blktrans_ops *tr = list_entry(this, struct mtd_blktrans_ops, list);
list_for_each_entry(tr, &blktrans_majors, list)
tr->add_mtd(tr, mtd);
}
}
static struct mtd_notifier blktrans_notifier = {
@ -404,7 +394,7 @@ int register_mtd_blktrans(struct mtd_blktrans_ops *tr)
int deregister_mtd_blktrans(struct mtd_blktrans_ops *tr)
{
struct list_head *this, *next;
struct mtd_blktrans_dev *dev, *next;
mutex_lock(&mtd_table_mutex);
@ -414,10 +404,8 @@ int deregister_mtd_blktrans(struct mtd_blktrans_ops *tr)
/* Remove it from the list of active majors */
list_del(&tr->list);
list_for_each_safe(this, next, &tr->devs) {
struct mtd_blktrans_dev *dev = list_entry(this, struct mtd_blktrans_dev, list);
list_for_each_entry_safe(dev, next, &tr->devs, list)
tr->remove_dev(dev);
}
blk_cleanup_queue(tr->blkcore_priv->rq);
unregister_blkdev(tr->major, tr->name);

6
drivers/mtd/mtdcore.c
View file

@ -70,9 +70,8 @@ int add_mtd_device(struct mtd_info *mtd)
DEBUG(0, "mtd: Giving out device %d to %s\n",i, mtd->name);
/* No need to get a refcount on the module containing
the notifier, since we hold the mtd_table_mutex */
list_for_each_entry(not, &mtd_notifiers, list) {
list_for_each_entry(not, &mtd_notifiers, list)
not->add(mtd);
}
mutex_unlock(&mtd_table_mutex);
/* We _know_ we aren't being removed, because
@ -114,9 +113,8 @@ int del_mtd_device (struct mtd_info *mtd)
/* No need to get a refcount on the module containing
the notifier, since we hold the mtd_table_mutex */
list_for_each_entry(not, &mtd_notifiers, list) {
list_for_each_entry(not, &mtd_notifiers, list)
not->remove(mtd);
}
mtd_table[mtd->index] = NULL;

23
drivers/mtd/mtdpart.c
View file

@ -300,22 +300,15 @@ static int part_block_markbad (struct mtd_info *mtd, loff_t ofs)
int del_mtd_partitions(struct mtd_info *master)
{
struct list_head *node;
struct mtd_part *slave;
struct mtd_part *slave, *next;
for (node = mtd_partitions.next;
node != &mtd_partitions;
node = node->next) {
slave = list_entry(node, struct mtd_part, list);
list_for_each_entry_safe(slave, next, &mtd_partitions, list)
if (slave->master == master) {
struct list_head *prev = node->prev;
__list_del(prev, node->next);
list_del(&slave->list);
if(slave->registered)
del_mtd_device(&slave->mtd);
kfree(slave);
node = prev;
}
}
return 0;
}
@ -511,18 +504,16 @@ static LIST_HEAD(part_parsers);
static struct mtd_part_parser *get_partition_parser(const char *name)
{
struct list_head *this;
void *ret = NULL;
struct mtd_part_parser *p, *ret = NULL;
spin_lock(&part_parser_lock);
list_for_each(this, &part_parsers) {
struct mtd_part_parser *p = list_entry(this, struct mtd_part_parser, list);
list_for_each_entry(p, &part_parsers, list)
if (!strcmp(p->name, name) && try_module_get(p->owner)) {
ret = p;
break;
}
}
spin_unlock(&part_parser_lock);
return ret;