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Commit f9e5554c authored by Emmanuel Grumbach's avatar Emmanuel Grumbach
Browse files

iwlwifi: pcie: prepare the device before accessing it 



For 8000 series, we need to access the device to know what
firmware to load. Before we do so, we need to prepare the
device otherwise we might not be able to access the
hardware.

Fixes: c278754a21e6 ("iwlwifi: mvm: support family 8000 B2/C steps")
CC: <stable@vger.kernel.org> [4.1]
Signed-off-by: default avatarEmmanuel Grumbach <emmanuel.grumbach@intel.com>
parent af3f2f74

drivers/net/wireless/iwlwifi/pcie/trans.c

+6 −0
Original line number Original line Diff line number Diff line
@@ -2551,6 +2551,12 @@ struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev, 
		trans->hw_rev = (trans->hw_rev & 0xfff0) |

		trans->hw_rev = (trans->hw_rev & 0xfff0) |

				(CSR_HW_REV_STEP(trans->hw_rev << 2) << 2);

				(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

		 * in-order to recognize C step driver should read chip version

		 * id located at the AUX bus MISC address space.

		 * id located at the AUX bus MISC address space.