[PATCH v2] mwifiex: Use put_unaligned_le32

[Himanshu Jha]

Use put_unaligned_le32 rather than using byte ordering function and
memcpy which makes code clear.
Also, add the header file where it is declared.

Done using Coccinelle and semantic patch used is :

@ rule1 @
identifier tmp; expression ptr,x; type T;
@@

- tmp = cpu_to_le32(x);

  <+... when != tmp
- memcpy(ptr, (T)&tmp, ...);
+ put_unaligned_le32(x,ptr);
  ...+>

@ depends on rule1 @
type j; identifier tmp;
@@

- j tmp;
  ...when != tmp

Signed-off-by: Himanshu Jha <himanshujha199...@gmail.com>
---
v2:
* added correct header file.

 drivers/net/wireless/marvell/mwifiex/cmdevt.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/cmdevt.c 
b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
index 0edc5d6..e28e119 100644
--- a/drivers/net/wireless/marvell/mwifiex/cmdevt.c
+++ b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
@@ -17,6 +17,7 @@
  * this warranty disclaimer.
  */
 
+#include <asm/unaligned.h>
 #include "decl.h"
 #include "ioctl.h"
 #include "util.h"
@@ -183,7 +184,6 @@ static int mwifiex_dnld_cmd_to_fw(struct mwifiex_private 
*priv,
        uint16_t cmd_code;
        uint16_t cmd_size;
        unsigned long flags;
-       __le32 tmp;
 
        if (!adapter || !cmd_node)
                return -1;
@@ -249,9 +249,9 @@ static int mwifiex_dnld_cmd_to_fw(struct mwifiex_private 
*priv,
        mwifiex_dbg_dump(adapter, CMD_D, "cmd buffer:", host_cmd, cmd_size);
 
        if (adapter->iface_type == MWIFIEX_USB) {
-               tmp = cpu_to_le32(MWIFIEX_USB_TYPE_CMD);
                skb_push(cmd_node->cmd_skb, MWIFIEX_TYPE_LEN);
-               memcpy(cmd_node->cmd_skb->data, &tmp, MWIFIEX_TYPE_LEN);
+               put_unaligned_le32(MWIFIEX_USB_TYPE_CMD,
+                                  cmd_node->cmd_skb->data);
                adapter->cmd_sent = true;
                ret = adapter->if_ops.host_to_card(adapter,
                                                   MWIFIEX_USB_EP_CMD_EVENT,
@@ -317,7 +317,6 @@ static int mwifiex_dnld_sleep_confirm_cmd(struct 
mwifiex_adapter *adapter)
                                (struct mwifiex_opt_sleep_confirm *)
                                                adapter->sleep_cfm->data;
        struct sk_buff *sleep_cfm_tmp;
-       __le32 tmp;
 
        priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 
@@ -342,8 +341,7 @@ static int mwifiex_dnld_sleep_confirm_cmd(struct 
mwifiex_adapter *adapter)
                                      + MWIFIEX_TYPE_LEN);
                skb_put(sleep_cfm_tmp, sizeof(struct mwifiex_opt_sleep_confirm)
                        + MWIFIEX_TYPE_LEN);
-               tmp = cpu_to_le32(MWIFIEX_USB_TYPE_CMD);
-               memcpy(sleep_cfm_tmp->data, &tmp, MWIFIEX_TYPE_LEN);
+               put_unaligned_le32(MWIFIEX_USB_TYPE_CMD, sleep_cfm_tmp->data);
                memcpy(sleep_cfm_tmp->data + MWIFIEX_TYPE_LEN,
                       adapter->sleep_cfm->data,
                       sizeof(struct mwifiex_opt_sleep_confirm));
-- 
2.7.4