Commit a3d7fc5c authored by Julia Lawall's avatar Julia Lawall Committed by Greg Kroah-Hartman

staging: Drop unnecessary null test

list_for_each_entry binds its first argument to a non-null value, and thus
any null test on the value of that argument is superfluous.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
iterator I;
expression x;
statement S;
@@

I(x,...) { <...
- if (x != NULL || ...)
  S
  ...> }
// </smpl>
Signed-off-by: default avatarJulia Lawall <julia@diku.dk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent ace91157
......@@ -301,10 +301,8 @@ static int pohmelfs_cn_dump(struct cn_msg *msg)
mutex_lock(&pohmelfs_config_lock);
list_for_each_entry(g, &pohmelfs_config_list, group_entry) {
if (g)
list_for_each_entry(g, &pohmelfs_config_list, group_entry)
total_msg += g->num_entry;
}
if (total_msg == 0) {
if (pohmelfs_send_reply(err, 0, POHMELFS_NOINFO_ACK, msg, NULL))
err = -ENOMEM;
......@@ -312,17 +310,18 @@ static int pohmelfs_cn_dump(struct cn_msg *msg)
}
list_for_each_entry(g, &pohmelfs_config_list, group_entry) {
if (g) {
list_for_each_entry_safe(c, tmp, &g->config_list, config_entry) {
list_for_each_entry_safe(c, tmp, &g->config_list,
config_entry) {
struct pohmelfs_ctl *sc = &c->state.ctl;
if (pohmelfs_send_reply(err, total_msg - i, POHMELFS_CTLINFO_ACK, msg, sc)) {
if (pohmelfs_send_reply(err, total_msg - i,
POHMELFS_CTLINFO_ACK, msg,
sc)) {
err = -ENOMEM;
goto out_unlock;
}
i += 1;
}
}
}
out_unlock:
mutex_unlock(&pohmelfs_config_lock);
......@@ -354,15 +353,14 @@ static int pohmelfs_cn_flush(struct cn_msg *msg)
}
} else {
list_for_each_entry(g, &pohmelfs_config_list, group_entry) {
if (g) {
list_for_each_entry_safe(c, tmp, &g->config_list, config_entry) {
list_for_each_entry_safe(c, tmp, &g->config_list,
config_entry) {
list_del(&c->config_entry);
g->num_entry--;
kfree(c);
}
}
}
}
out_unlock:
mutex_unlock(&pohmelfs_config_lock);
......
......@@ -702,10 +702,8 @@ void tm6000_unregister_extension(struct tm6000_ops *ops)
struct tm6000_core *dev = NULL;
mutex_lock(&tm6000_devlist_mutex);
list_for_each_entry(dev, &tm6000_devlist, devlist) {
if (dev)
list_for_each_entry(dev, &tm6000_devlist, devlist)
ops->fini(dev);
}
mutex_lock(&tm6000_extension_devlist_lock);
printk(KERN_INFO "tm6000: Remove (%s) extension\n", ops->name);
......
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