wl1251: split RX and TX data path initialisation

Split up data path initialisation into RX and TX data path initialisation
functions. This change is required for channel switching in monitor mode.

Signed-off-by: David Gnedt <david.gnedt@davizone.at>
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 41 insertions, 17 deletions

diff --git a/drivers/net/wireless/ti/wl1251/cmd.c b/drivers/net/wireless/ti/wl1251/cmd.c
index 40f8d3e52a35..223649bcaa5a 100644
--- a/drivers/net/wireless/ti/wl1251/cmd.c
+++ b/drivers/net/wireless/ti/wl1251/cmd.c
@@ -204,11 +204,11 @@ out:
         return ret;
 }
 
-int wl1251_cmd_data_path(struct wl1251 *wl, u8 channel, bool enable)
+int wl1251_cmd_data_path_rx(struct wl1251 *wl, u8 channel, bool enable)
 {
         struct cmd_enabledisable_path *cmd;
         int ret;
-        u16 cmd_rx, cmd_tx;
+        u16 cmd_rx;
 
         wl1251_debug(DEBUG_CMD, "cmd data path");
 
@@ -220,13 +220,10 @@ int wl1251_cmd_data_path(struct wl1251 *wl, u8 channel, bool enable)
 
         cmd->channel = channel;
 
-        if (enable) {
+        if (enable)
                 cmd_rx = CMD_ENABLE_RX;
-                cmd_tx = CMD_ENABLE_TX;
-        } else {
+        else
                 cmd_rx = CMD_DISABLE_RX;
-                cmd_tx = CMD_DISABLE_TX;
-        }
 
         ret = wl1251_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd));
         if (ret < 0) {
@@ -238,17 +235,38 @@ int wl1251_cmd_data_path(struct wl1251 *wl, u8 channel, bool enable)
         wl1251_debug(DEBUG_BOOT, "rx %s cmd channel %d",
                      enable ? "start" : "stop", channel);
 
+out:
+        kfree(cmd);
+        return ret;
+}
+
+int wl1251_cmd_data_path_tx(struct wl1251 *wl, u8 channel, bool enable)
+{
+        struct cmd_enabledisable_path *cmd;
+        int ret;
+        u16 cmd_tx;
+
+        wl1251_debug(DEBUG_CMD, "cmd data path");
+
+        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+        if (!cmd)
+                return -ENOMEM;
+
+        cmd->channel = channel;
+
+        if (enable)
+                cmd_tx = CMD_ENABLE_TX;
+        else
+                cmd_tx = CMD_DISABLE_TX;
+
         ret = wl1251_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd));
-        if (ret < 0) {
+        if (ret < 0)
                 wl1251_error("tx %s cmd for channel %d failed",
                              enable ? "start" : "stop", channel);
-                goto out;
-        }
-
-        wl1251_debug(DEBUG_BOOT, "tx %s cmd channel %d",
-                     enable ? "start" : "stop", channel);
+        else
+                wl1251_debug(DEBUG_BOOT, "tx %s cmd channel %d",
+                             enable ? "start" : "stop", channel);
 
-out:
         kfree(cmd);
         return ret;
 }
diff --git a/drivers/net/wireless/ti/wl1251/cmd.h b/drivers/net/wireless/ti/wl1251/cmd.h
index 126f273f0b66..d824ff978311 100644
--- a/drivers/net/wireless/ti/wl1251/cmd.h
+++ b/drivers/net/wireless/ti/wl1251/cmd.h
@@ -35,7 +35,8 @@ int wl1251_cmd_interrogate(struct wl1251 *wl, u16 id, void *buf, size_t len);
 int wl1251_cmd_configure(struct wl1251 *wl, u16 id, void *buf, size_t len);
 int wl1251_cmd_vbm(struct wl1251 *wl, u8 identity,
                    void *bitmap, u16 bitmap_len, u8 bitmap_control);
-int wl1251_cmd_data_path(struct wl1251 *wl, u8 channel, bool enable);
+int wl1251_cmd_data_path_rx(struct wl1251 *wl, u8 channel, bool enable);
+int wl1251_cmd_data_path_tx(struct wl1251 *wl, u8 channel, bool enable);
 int wl1251_cmd_join(struct wl1251 *wl, u8 bss_type, u8 channel,
                     u16 beacon_interval, u8 dtim_interval);
 int wl1251_cmd_ps_mode(struct wl1251 *wl, u8 ps_mode);
diff --git a/drivers/net/wireless/ti/wl1251/init.c b/drivers/net/wireless/ti/wl1251/init.c
index 89b43d35473c..1641e4c8fa52 100644
--- a/drivers/net/wireless/ti/wl1251/init.c
+++ b/drivers/net/wireless/ti/wl1251/init.c
@@ -394,8 +394,13 @@ int wl1251_hw_init(struct wl1251 *wl)
         if (ret < 0)
                 goto out_free_data_path;
 
-        /* Enable data path */
-        ret = wl1251_cmd_data_path(wl, wl->channel, 1);
+        /* Enable rx data path */
+        ret = wl1251_cmd_data_path_rx(wl, wl->channel, 1);
+        if (ret < 0)
+                goto out_free_data_path;
+
+        /* Enable tx data path */
+        ret = wl1251_cmd_data_path_tx(wl, wl->channel, 1);
         if (ret < 0)
                 goto out_free_data_path;