libertas: convert CMD_802_11_RF_TX_POWER to a direct command

And while we're at it, grab min/max TX power from the firmware and use
that to validate incoming TX power requests from WEXT.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 10 insertions, 3 deletions

diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c
index bd32ac0b4e07..3c13619ffa15 100644
--- a/drivers/net/wireless/libertas/main.c
+++ b/drivers/net/wireless/libertas/main.c
@@ -956,17 +956,24 @@ EXPORT_SYMBOL_GPL(lbs_resume);
 static int lbs_setup_firmware(struct lbs_private *priv)
 {
         int ret = -1;
+        s16 curlevel = 0, minlevel = 0, maxlevel = 0;
 
         lbs_deb_enter(LBS_DEB_FW);
 
-        /*
-         * Read MAC address from HW
-         */
+        /* Read MAC address from firmware */
         memset(priv->current_addr, 0xff, ETH_ALEN);
         ret = lbs_update_hw_spec(priv);
         if (ret)
                 goto done;
 
+        /* Read power levels if available */
+        ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel);
+        if (ret == 0) {
+                priv->txpower_cur = curlevel;
+                priv->txpower_min = minlevel;
+                priv->txpower_max = maxlevel;
+        }
+
         lbs_set_mac_control(priv);
 done:
         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);