1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c
index a2eb90d40b7e..ed63e5c76f3c 100644
--- a/drivers/net/wireless/iwlwifi/iwl-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-rx.c
@@ -420,3 +420,29 @@ int iwl_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
         return 0;
 }
 
+int iwl_rxq_stop(struct iwl_priv *priv)
+{
+        int ret;
+        unsigned long flags;
+
+        spin_lock_irqsave(&priv->lock, flags);
+        ret = iwl_grab_nic_access(priv);
+        if (unlikely(ret)) {
+                spin_unlock_irqrestore(&priv->lock, flags);
+                return ret;
+        }
+
+        /* stop Rx DMA */
+        iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0);
+        ret = iwl_poll_direct_bit(priv, FH_MEM_RSSR_RX_STATUS_REG,
+                                     (1 << 24), 1000);
+        if (ret < 0)
+                IWL_ERROR("Can't stop Rx DMA.\n");
+
+        iwl_release_nic_access(priv);
+        spin_unlock_irqrestore(&priv->lock, flags);
+
+        return 0;
+}
+EXPORT_SYMBOL(iwl_rxq_stop);
+