libertas: don't cast a pointer to pointer of
Don't cast struct foo * to struct list_head *, it's safe only when
the list member is the first member of struct foo.
Also don't cast struct list_head * to struct foo *.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/libertas/cmd.c b/drivers/net/wireless/libertas/cmd.c
index 7097dcf..851eb3c 100644
--- a/drivers/net/wireless/libertas/cmd.c
+++ b/drivers/net/wireless/libertas/cmd.c
@@ -1021,11 +1021,10 @@
spin_lock_irqsave(&adapter->driver_lock, flags);
if (addtail) {
- list_add_tail((struct list_head *)cmdnode,
- &adapter->cmdpendingq);
+ list_add_tail(&cmdnode->list, &adapter->cmdpendingq);
adapter->nr_cmd_pending++;
} else
- list_add((struct list_head *)cmdnode, &adapter->cmdpendingq);
+ list_add(&cmdnode->list, &adapter->cmdpendingq);
spin_unlock_irqrestore(&adapter->driver_lock, flags);
@@ -1144,7 +1143,7 @@
return;
cleanup_cmdnode(ptempcmd);
- list_add_tail((struct list_head *)ptempcmd, &adapter->cmdfreeq);
+ list_add_tail(&ptempcmd->list, &adapter->cmdfreeq);
}
static void lbs_cleanup_and_insert_cmd(struct lbs_private *priv,
@@ -1642,8 +1641,9 @@
spin_lock_irqsave(&adapter->driver_lock, flags);
if (!list_empty(&adapter->cmdfreeq)) {
- tempnode = (struct cmd_ctrl_node *)adapter->cmdfreeq.next;
- list_del((struct list_head *)tempnode);
+ tempnode = list_first_entry(&adapter->cmdfreeq,
+ struct cmd_ctrl_node, list);
+ list_del(&tempnode->list);
} else {
lbs_deb_host("GET_CMD_NODE: cmd_ctrl_node is not available\n");
tempnode = NULL;
@@ -1738,8 +1738,8 @@
}
if (!list_empty(&adapter->cmdpendingq)) {
- cmdnode = (struct cmd_ctrl_node *)
- adapter->cmdpendingq.next;
+ cmdnode = list_first_entry(&adapter->cmdpendingq,
+ struct cmd_ctrl_node, list);
}
spin_unlock_irqrestore(&adapter->driver_lock, flags);
@@ -1803,7 +1803,7 @@
cpu_to_le16(CMD_SUBCMD_EXIT_PS)) {
lbs_deb_host(
"EXEC_NEXT_CMD: ignore ENTER_PS cmd\n");
- list_del((struct list_head *)cmdnode);
+ list_del(&cmdnode->list);
lbs_cleanup_and_insert_cmd(priv, cmdnode);
ret = 0;
@@ -1814,7 +1814,7 @@
(adapter->psstate == PS_STATE_PRE_SLEEP)) {
lbs_deb_host(
"EXEC_NEXT_CMD: ignore EXIT_PS cmd in sleep\n");
- list_del((struct list_head *)cmdnode);
+ list_del(&cmdnode->list);
lbs_cleanup_and_insert_cmd(priv, cmdnode);
adapter->needtowakeup = 1;
@@ -1826,7 +1826,7 @@
"EXEC_NEXT_CMD: sending EXIT_PS\n");
}
}
- list_del((struct list_head *)cmdnode);
+ list_del(&cmdnode->list);
lbs_deb_host("EXEC_NEXT_CMD: sending command 0x%04x\n",
le16_to_cpu(cmdptr->command));
DownloadcommandToStation(priv, cmdnode);