libertas: handy function to call firmware commands

Using an arbitrary firmware command was actually very painful. One
had to change big switch() statements in cmd.c, cmdresp.c, add
structs to the big union in "struct cmd_ds_command" and add the
define for the CMD_802_11_xxx to the proper place.

With this function, this is now much easier. For now, it implements
a blocking (a.k.a. CMD_OPTION_WAITFORRSP) way where one deals directly
with command requests and response buffers. You can do everything in
one place:

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>

1 files changed, 7 insertions, 4 deletions

diff --git a/drivers/net/wireless/libertas/hostcmd.h b/drivers/net/wireless/libertas/hostcmd.h
index f096d995194a..be69ae652923 100644
--- a/drivers/net/wireless/libertas/hostcmd.h
+++ b/drivers/net/wireless/libertas/hostcmd.h
@@ -66,13 +66,13 @@ struct rxpd {
 };
 
 struct cmd_ctrl_node {
-        /* CMD link list */
         struct list_head list;
-        /*CMD wait option: wait for finish or no wait */
+        /* wait for finish or not */
         u16 wait_option;
-        /* command parameter */
+        /* command response */
         void *pdata_buf;
-        /*command data */
+        int *pdata_size;
+        /* command data */
         u8 *bufvirtualaddr;
         /* wait queue */
         u16 cmdwaitqwoken;
@@ -100,9 +100,12 @@ struct cmd_ds_gen {
         __le16 size;
         __le16 seqnum;
         __le16 result;
+        void *cmdresp[0];
 };
 
 #define S_DS_GEN sizeof(struct cmd_ds_gen)
+
+
 /*
  * Define data structure for CMD_GET_HW_SPEC
  * This structure defines the response for the GET_HW_SPEC command