iwlwifi: pcie: prepare the device before accessing it

[karo-tx-linux.git] / drivers / net / wireless / iwlwifi / pcie / trans.c

diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
index fe61d0aa5550448f23b4540b8b92abde40cd54d1..6203c4ad9bba5d8ce3bb2f46f832c3bb4ebe85fc 100644 (file)
--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
@@ -2551,6 +2551,12 @@ struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev,
                trans->hw_rev = (trans->hw_rev & 0xfff0) |
                                (CSR_HW_REV_STEP(trans->hw_rev << 2) << 2);
 
+               ret = iwl_pcie_prepare_card_hw(trans);
+               if (ret) {
+                       IWL_WARN(trans, "Exit HW not ready\n");
+                       goto out_pci_disable_msi;
+               }
+
                /*
                 * in-order to recognize C step driver should read chip version
                 * id located at the AUX bus MISC address space.