From patchwork Tue Aug 22 07:33:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Greenman, Gregory" X-Patchwork-Id: 13360298 X-Patchwork-Delegate: johannes@sipsolutions.net Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 18522EE4993 for ; Tue, 22 Aug 2023 07:33:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233434AbjHVHdk (ORCPT ); Tue, 22 Aug 2023 03:33:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43606 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233436AbjHVHdg (ORCPT ); Tue, 22 Aug 2023 03:33:36 -0400 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E8BC3137 for ; Tue, 22 Aug 2023 00:33:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1692689614; x=1724225614; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=nj80eqtbKncMDoHksdcuuok0wmml/klBStx34qP+ujI=; b=UKVmmEHkqOLnzecscIj4HlYj0U15g3ClX9IkePSn7cu2R+MuK4kyoLCl 4r83gSCKiyXK1/BKagKb8uhJNpM6jZ8uEc2SBh/W5vUL5SaHF7bHYuDc8 MKxjs5V2kKO3vN50TEUOnwXdHPDT3qHDYOuUqM/5QUyYqfqIzeJzGB8Ee QSv7/0iQX+8HC3PCyC42bX1Pv4EU0h9hUKALqg55/mvl9l0ZDf0NVBVDj PP/Lv58t8Ai6Ff6XJgUDUIDqqCKjy8SWfXFmMTawVKL57fGDAAyDFT1Iu xPCofpfUdVF04/jvy731AtpvdSTuOBSNaPMlXsynpPcJJoRi5Ff+6iCM5 Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10809"; a="363968728" X-IronPort-AV: E=Sophos;i="6.01,192,1684825200"; d="scan'208";a="363968728" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Aug 2023 00:33:34 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10809"; a="826229598" X-IronPort-AV: E=Sophos;i="6.01,192,1684825200"; d="scan'208";a="826229598" Received: from msharshe-mobl.ger.corp.intel.com (HELO ggreenma-mobl2.intel.com) ([10.214.209.35]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Aug 2023 00:33:33 -0700 From: gregory.greenman@intel.com To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Avraham Stern , Gregory Greenman Subject: [PATCH 1/5] wifi: iwlwifi: pcie: avoid a warning in case prepare card failed Date: Tue, 22 Aug 2023 10:33:15 +0300 Message-Id: <20230822103048.9b026fa7b97e.I12bea7e6eef54eeeaf916b68d71583e92ff310fd@changeid> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230822073319.466640-1-gregory.greenman@intel.com> References: <20230822073319.466640-1-gregory.greenman@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Avraham Stern In case CSME holds the NIC and SAP connection is already established, iwl_pcie_prepare_card_hw() during iwl_pci_probe() will fail (which is fine since CSME will release the nic later when asked with a SAP message). In this case tring to grab nic access to read the crf ids will fail with a warning. Avoid the warning by only trying to read the crf ids in case prepare card succeeded. Signed-off-by: Avraham Stern Signed-off-by: Gregory Greenman --- drivers/net/wireless/intel/iwlwifi/pcie/drv.c | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c index 73c1fb3c0c5e..bc83d2ba55c6 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c @@ -1132,12 +1132,6 @@ static int get_crf_id(struct iwl_trans *iwl_trans) else sd_reg_ver_addr = SD_REG_VER; - if (!iwl_trans_grab_nic_access(iwl_trans)) { - IWL_ERR(iwl_trans, "Failed to grab nic access before reading crf id\n"); - ret = -EIO; - goto out; - } - /* Enable access to peripheral registers */ val = iwl_read_umac_prph_no_grab(iwl_trans, WFPM_CTRL_REG); val |= ENABLE_WFPM; @@ -1157,9 +1151,6 @@ static int get_crf_id(struct iwl_trans *iwl_trans) iwl_trans->hw_crf_id, iwl_trans->hw_cnv_id, iwl_trans->hw_wfpm_id); - iwl_trans_release_nic_access(iwl_trans); - -out: return ret; } @@ -1351,6 +1342,7 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (ret) goto out_free_trans; if (iwl_trans_grab_nic_access(iwl_trans)) { + get_crf_id(iwl_trans); /* all good */ iwl_trans_release_nic_access(iwl_trans); } else { @@ -1360,7 +1352,6 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) } iwl_trans->hw_rf_id = iwl_read32(iwl_trans, CSR_HW_RF_ID); - get_crf_id(iwl_trans); /* * The RF_ID is set to zero in blank OTP so read version to