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libertas: add __lbs_cmd_async() for asynchronous command submission
Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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ae125bf827
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3399ea5f23
@ -2139,42 +2139,18 @@ int lbs_cmd_copyback(struct lbs_private *priv, unsigned long extra,
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}
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EXPORT_SYMBOL_GPL(lbs_cmd_copyback);
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/**
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* @brief Simple way to call firmware functions
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*
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* @param priv A pointer to struct lbs_private structure
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* @param psmode one of the many CMD_802_11_xxxx
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* @param cmd pointer to the parameters structure for above command
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* (this should not include the command, size, sequence
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* and result fields from struct cmd_ds_gen)
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* @param cmd_size size structure pointed to by cmd
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* @param rsp pointer to an area where the result should be placed
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* @param rsp_size pointer to the size of the rsp area. If the firmware
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* returns fewer bytes, then this *rsp_size will be
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* changed to the actual size.
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* @return -1 in case of a higher level error, otherwise
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* the result code from the firmware
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*/
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int __lbs_cmd(struct lbs_private *priv, uint16_t command,
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struct cmd_header *in_cmd, int in_cmd_size,
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int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
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unsigned long callback_arg)
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struct cmd_ctrl_node *__lbs_cmd_async(struct lbs_private *priv, uint16_t command,
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struct cmd_header *in_cmd, int in_cmd_size,
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int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
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unsigned long callback_arg)
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{
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struct cmd_ctrl_node *cmdnode;
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unsigned long flags;
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int ret = 0;
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lbs_deb_enter(LBS_DEB_HOST);
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if (!priv) {
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lbs_deb_host("PREP_CMD: priv is NULL\n");
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ret = -1;
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goto done;
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}
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if (priv->surpriseremoved) {
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lbs_deb_host("PREP_CMD: card removed\n");
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ret = -1;
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cmdnode = ERR_PTR(-ENOENT);
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goto done;
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}
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@ -2184,7 +2160,7 @@ int __lbs_cmd(struct lbs_private *priv, uint16_t command,
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/* Wake up main thread to execute next command */
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wake_up_interruptible(&priv->waitq);
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ret = -1;
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cmdnode = ERR_PTR(-ENOBUFS);
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goto done;
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}
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@ -2210,6 +2186,29 @@ int __lbs_cmd(struct lbs_private *priv, uint16_t command,
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lbs_queue_cmd(priv, cmdnode, 1);
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wake_up_interruptible(&priv->waitq);
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done:
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lbs_deb_leave_args(LBS_DEB_HOST, "ret %p", cmdnode);
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return cmdnode;
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}
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int __lbs_cmd(struct lbs_private *priv, uint16_t command,
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struct cmd_header *in_cmd, int in_cmd_size,
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int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
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unsigned long callback_arg)
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{
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struct cmd_ctrl_node *cmdnode;
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unsigned long flags;
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int ret = 0;
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lbs_deb_enter(LBS_DEB_HOST);
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cmdnode = __lbs_cmd_async(priv, command, in_cmd, in_cmd_size,
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callback, callback_arg);
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if (IS_ERR(cmdnode)) {
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ret = PTR_ERR(cmdnode);
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goto done;
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}
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might_sleep();
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wait_event_interruptible(cmdnode->cmdwait_q, cmdnode->cmdwaitqwoken);
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@ -2218,6 +2217,7 @@ int __lbs_cmd(struct lbs_private *priv, uint16_t command,
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if (ret)
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lbs_pr_info("PREP_CMD: command 0x%04x failed: %d\n",
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command, ret);
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__lbs_cleanup_and_insert_cmd(priv, cmdnode);
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spin_unlock_irqrestore(&priv->driver_lock, flags);
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@ -12,6 +12,12 @@
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#define lbs_cmd_with_response(priv, cmdnr, cmd) \
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lbs_cmd(priv, cmdnr, cmd, lbs_cmd_copyback, (unsigned long) (cmd))
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/* __lbs_cmd() will free the cmdnode and return success/failure.
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__lbs_cmd_async() requires that the callback free the cmdnode */
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struct cmd_ctrl_node *__lbs_cmd_async(struct lbs_private *priv, uint16_t command,
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struct cmd_header *in_cmd, int in_cmd_size,
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int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
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unsigned long callback_arg);
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int __lbs_cmd(struct lbs_private *priv, uint16_t command,
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struct cmd_header *in_cmd, int in_cmd_size,
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int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
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