iwlwifi: return real info in probe failure

Don't return a hard coded -EFAULT, but rather the error
that occurred in the flow.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

2 files changed, 11 insertions, 6 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-drv.c b/drivers/net/wireless/iwlwifi/iwl-drv.c
index 198634b75ed0..d3549f493a17 100644
--- a/drivers/net/wireless/iwlwifi/iwl-drv.c
+++ b/drivers/net/wireless/iwlwifi/iwl-drv.c
@@ -1032,6 +1032,7 @@ struct iwl_drv *iwl_drv_start(struct iwl_trans *trans,
 
         if (!drv->dbgfs_drv) {
                 IWL_ERR(drv, "failed to create debugfs directory\n");
+                ret = -ENOMEM;
                 goto err_free_drv;
         }
 
@@ -1040,12 +1041,12 @@ struct iwl_drv *iwl_drv_start(struct iwl_trans *trans,
 
         if (!drv->trans->dbgfs_dir) {
                 IWL_ERR(drv, "failed to create transport debugfs directory\n");
+                ret = -ENOMEM;
                 goto err_free_dbgfs;
         }
 #endif
 
         ret = iwl_request_firmware(drv, true);
-
         if (ret) {
                 IWL_ERR(trans, "Couldn't request the fw\n");
                 goto err_fw;
@@ -1060,9 +1061,8 @@ err_free_dbgfs:
 err_free_drv:
 #endif
         kfree(drv);
-        drv = NULL;
 
-        return drv;
+        return ERR_PTR(ret);
 }
 
 void iwl_drv_stop(struct iwl_drv *drv)
diff --git a/drivers/net/wireless/iwlwifi/pcie/drv.c b/drivers/net/wireless/iwlwifi/pcie/drv.c
index 956fe6c370bc..a93a170b6f2c 100644
--- a/drivers/net/wireless/iwlwifi/pcie/drv.c
+++ b/drivers/net/wireless/iwlwifi/pcie/drv.c
@@ -267,6 +267,7 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
         const struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
         struct iwl_trans *iwl_trans;
         struct iwl_trans_pcie *trans_pcie;
+        int ret;
 
         iwl_trans = iwl_trans_pcie_alloc(pdev, ent, cfg);
         if (iwl_trans == NULL)
@@ -276,11 +277,15 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
         trans_pcie = IWL_TRANS_GET_PCIE_TRANS(iwl_trans);
         trans_pcie->drv = iwl_drv_start(iwl_trans, cfg);
-        if (!trans_pcie->drv)
+
+        if (IS_ERR_OR_NULL(trans_pcie->drv)) {
+                ret = PTR_ERR(trans_pcie->drv);
                 goto out_free_trans;
+        }
 
         /* register transport layer debugfs here */
-        if (iwl_trans_dbgfs_register(iwl_trans, iwl_trans->dbgfs_dir))
+        ret = iwl_trans_dbgfs_register(iwl_trans, iwl_trans->dbgfs_dir);
+        if (ret)
                 goto out_free_drv;
 
         return 0;
@@ -290,7 +295,7 @@ out_free_drv:
 out_free_trans:
         iwl_trans_pcie_free(iwl_trans);
         pci_set_drvdata(pdev, NULL);
-        return -EFAULT;
+        return ret;
 }
 
 static void __devexit iwl_pci_remove(struct pci_dev *pdev)