libertas: fix command timeout after firmware failure

This is a fix for OLPC ticket #6586: "SCAN command fails, timer doesn't
fire". In fact, the timer was firing; the problem was that the dnld_sent
state variable was not being updated after the timer expired, so
lbs_execute_next_command was not being called.

Signed-off-by: Brian Cavagnolo <brian@cozybit.com>
Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c
index 406f54d..bb08f0b 100644
--- a/drivers/net/wireless/libertas/main.c
+++ b/drivers/net/wireless/libertas/main.c
@@ -756,6 +756,7 @@
 				priv->nr_retries = 0;
 			} else {
 				priv->cur_cmd = NULL;
+				priv->dnld_sent = DNLD_RES_RECEIVED;
 				lbs_pr_info("requeueing command %x due to timeout (#%d)\n",
 					    le16_to_cpu(cmdnode->cmdbuf->command), priv->nr_retries);