iwmc3200wifi: make iwm_send_wifi_if_cmd return 0 on success

We used to return the result of wait_event_interruptible_timeout()
which is the remaining timeout on success. But this information is
not used by any of its callers. So we just return 0 on success.
This fixed a erroneous return value bug for iwm_set_key().

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 13 insertions, 14 deletions

diff --git a/drivers/net/wireless/iwmc3200wifi/commands.c b/drivers/net/wireless/iwmc3200wifi/commands.c
index 0d35afefb61..e6be29704a1 100644
--- a/drivers/net/wireless/iwmc3200wifi/commands.c
+++ b/drivers/net/wireless/iwmc3200wifi/commands.c
@@ -87,8 +87,7 @@ int iwm_send_wifi_if_cmd(struct iwm_priv *iwm, void *payload, u16 payload_size,
                                    test_and_clear_bit(oid, &iwm->wifi_ntfy[0]),
                                    3 * HZ);
 
-                if (!ret)
-                        ret = -EBUSY;
+                return ret ? 0 : -EBUSY;
         }
 
         return ret;
@@ -480,8 +479,10 @@ static int iwm_target_read(struct iwm_priv *iwm, __le32 address,
         target_cmd.eop = 1;
 
         ret = iwm_hal_send_target_cmd(iwm, &target_cmd, NULL);
-        if (ret < 0)
+        if (ret < 0) {
                 IWM_ERR(iwm, "Couldn't send READ command\n");
+                return ret;
+        }
 
         /* When succeding, the send_target routine returns the seq number */
         seq_num = ret;
@@ -501,7 +502,7 @@ static int iwm_target_read(struct iwm_priv *iwm, __le32 address,
 
         kfree(cmd);
 
-        return ret;
+        return 0;
 }
 
 int iwm_read_mac(struct iwm_priv *iwm, u8 *mac)
@@ -511,7 +512,7 @@ int iwm_read_mac(struct iwm_priv *iwm, u8 *mac)
 
         ret = iwm_target_read(iwm, cpu_to_le32(WICO_MAC_ADDRESS_ADDR),
                               mac_align, sizeof(mac_align));
-        if (ret < 0)
+        if (ret)
                 return ret;
 
         if (is_valid_ether_addr(mac_align))
@@ -714,7 +715,7 @@ int iwm_set_key(struct iwm_priv *iwm, bool remove, struct iwm_key *key)
                 ret =  iwm_send_wifi_if_cmd(iwm, &key_remove,
                                             sizeof(struct iwm_umac_key_remove),
                                             1);
-                if (ret < 0)
+                if (ret)
                         return ret;
 
                 iwm->keys[key_idx].key_len = 0;
@@ -736,7 +737,7 @@ int iwm_send_mlme_profile(struct iwm_priv *iwm)
                                            sizeof(struct iwm_umac_wifi_if));
 
         ret = iwm_send_wifi_if_cmd(iwm, &profile, sizeof(profile), 1);
-        if (ret < 0) {
+        if (ret) {
                 IWM_ERR(iwm, "Send profile command failed\n");
                 return ret;
         }
@@ -752,12 +753,12 @@ int iwm_send_mlme_profile(struct iwm_priv *iwm)
                                                          3 * HZ);
 
                         ret = iwm_set_key(iwm, 0, key);
-                        if (ret < 0)
+                        if (ret)
                                 return ret;
 
                         if (iwm->default_key == i) {
                                 ret = iwm_set_tx_key(iwm, i);
-                                if (ret < 0)
+                                if (ret)
                                         return ret;
                         }
                 }
@@ -778,15 +779,13 @@ int iwm_invalidate_mlme_profile(struct iwm_priv *iwm)
         invalid.reason = WLAN_REASON_UNSPECIFIED;
 
         ret = iwm_send_wifi_if_cmd(iwm, &invalid, sizeof(invalid), 1);
-        if (ret < 0)
+        if (ret)
                 return ret;
 
         ret = wait_event_interruptible_timeout(iwm->mlme_queue,
                                 (iwm->umac_profile_active == 0), 2 * HZ);
-        if (!ret)
-                return -EBUSY;
 
-        return 0;
+        return ret ? 0 : -EBUSY;
 }
 
 int iwm_send_umac_stats_req(struct iwm_priv *iwm, u32 flags)
@@ -869,7 +868,7 @@ int iwm_scan_ssids(struct iwm_priv *iwm, struct cfg80211_ssid *ssids,
         }
 
         ret = iwm_send_wifi_if_cmd(iwm, &req, sizeof(req), 0);
-        if (ret < 0) {
+        if (ret) {
                 IWM_ERR(iwm, "Couldn't send scan request\n");
                 return ret;
         }