ath9k_htc: Fix free slot value for cab queue

ath9k_htc_tx_get_slot can return zero as valid index.

Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Acked-by: Sujith Manoharan <Sujith.Manoharan@Atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c b/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c
index bf7ef1b7eb3f..a157107b3f3b 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c
@@ -322,7 +322,7 @@ static void ath9k_htc_send_buffered(struct ath9k_htc_priv *priv,
                 }
 
                 tx_slot = ath9k_htc_tx_get_slot(priv);
-                if (tx_slot != 0) {
+                if (tx_slot < 0) {
                         ath_dbg(common, ATH_DBG_XMIT, "No free CAB slot\n");
                         dev_kfree_skb_any(skb);
                         goto next;