From patchwork Mon Sep 11 12:53:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Ilpo_J=C3=A4rvinen?= X-Patchwork-Id: 13380039 X-Patchwork-Delegate: bhelgaas@google.com 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 89BE8CA0EC5 for ; Mon, 11 Sep 2023 21:40:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242618AbjIKVhe (ORCPT ); Mon, 11 Sep 2023 17:37:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40430 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237498AbjIKMyY (ORCPT ); Mon, 11 Sep 2023 08:54:24 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CD86CE40; Mon, 11 Sep 2023 05:54:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694436859; x=1725972859; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=EIzH6I89fHcXXY3uRmCZDeB2Y9jdsZHRRgZCynpqYTM=; b=JuPSEvYIB+mM2lBRXxT7OwqrRO6ynrEoIGnior6iD3Zg9K0yqd3ivFuX d5mWodOT3ThLbjXpxwfvMKUjwpOVHBcyKLOzbMdN//AO0Bg6HH50h6BXe sNGZwt2hOW/zWca6n5BcKR57CRMM+GEp8O++Wdakx68G0qQLXYnG24l3Z iexVdpZtzVkOMq+pUMcppi7f6qefJ/XBP6IHqAdlzPXNj4cKwGyGxhoGP riCEEGvTjMmYNLaSIelvjYdVCUbkV+egVcHg5UiCiZkrBiT7+TYNTwSev 7vZA2RswbgW1pjtYpJ7IrHJldXlhqiBi2bM2xrinlvk10qktjikfrgF9X Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10830"; a="357511174" X-IronPort-AV: E=Sophos;i="6.02,244,1688454000"; d="scan'208";a="357511174" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2023 05:54:15 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10830"; a="858304167" X-IronPort-AV: E=Sophos;i="6.02,244,1688454000"; d="scan'208";a="858304167" Received: from mzarkov-mobl3.ger.corp.intel.com (HELO ijarvine-mobl2.ger.corp.intel.com) ([10.252.36.200]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2023 05:54:10 -0700 From: =?utf-8?q?Ilpo_J=C3=A4rvinen?= To: Rob Herring , Bjorn Helgaas , linux-pci@vger.kernel.org, Richard Henderson , Ivan Kokshaysky , Matt Turner , linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org Cc: 3chas3@gmail.com, brking@us.ibm.com, dalias@libc.org, glaubitz@physik.fu-berlin.de, jejb@linux.ibm.com, kw@linux.com, linux-arm-kernel@lists.infradead.org, linux-atm-general@lists.sourceforge.net, linux-scsi@vger.kernel.org, linux-sh@vger.kernel.org, lpieralisi@kernel.org, martin.petersen@oracle.com, netdev@vger.kernel.org, toan@os.amperecomputing.com, ysato@users.sourceforge.jp, =?utf-8?q?Ilpo_J=C3=A4rvinen?= Subject: [PATCH v3 1/6] alpha: Streamline convoluted PCI error handling Date: Mon, 11 Sep 2023 15:53:49 +0300 Message-Id: <20230911125354.25501-2-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230911125354.25501-1-ilpo.jarvinen@linux.intel.com> References: <20230911125354.25501-1-ilpo.jarvinen@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org miata_map_irq() handles PCI device and read config related errors in a conditional block that is more complex than necessary. Streamline the code flow and error handling. No functional changes intended. Signed-off-by: Ilpo Järvinen --- arch/alpha/kernel/sys_miata.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/arch/alpha/kernel/sys_miata.c b/arch/alpha/kernel/sys_miata.c index e1bee8f84c58..33b2798de8fc 100644 --- a/arch/alpha/kernel/sys_miata.c +++ b/arch/alpha/kernel/sys_miata.c @@ -183,16 +183,17 @@ miata_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) the 2nd 8259 controller. So we have to check for it first. */ if((slot == 7) && (PCI_FUNC(dev->devfn) == 3)) { - u8 irq=0; struct pci_dev *pdev = pci_get_slot(dev->bus, dev->devfn & ~7); - if(pdev == NULL || pci_read_config_byte(pdev, 0x40,&irq) != PCIBIOS_SUCCESSFUL) { - pci_dev_put(pdev); + u8 irq = 0; + int ret; + + if (!pdev) return -1; - } - else { - pci_dev_put(pdev); - return irq; - } + + ret = pci_read_config_byte(pdev, 0x40, &irq); + pci_dev_put(pdev); + + return ret == PCIBIOS_SUCCESSFUL ? irq : -1; } return COMMON_TABLE_LOOKUP; From patchwork Mon Sep 11 12:53:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Ilpo_J=C3=A4rvinen?= X-Patchwork-Id: 13380068 X-Patchwork-Delegate: bhelgaas@google.com 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 0B23DCA0ED3 for ; Mon, 11 Sep 2023 21:41:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239027AbjIKVkR (ORCPT ); Mon, 11 Sep 2023 17:40:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40442 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237500AbjIKMy1 (ORCPT ); Mon, 11 Sep 2023 08:54:27 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1B8C3E4B; Mon, 11 Sep 2023 05:54:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694436863; x=1725972863; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=tnx7Bflw7Y/aVGaG8EH0QBwqdgCKqxJb3mqsR3QL2Es=; b=ipEenqZC/TbR4sspeEDz6DPiQH7eglzBAWTy0KtnvVno1wIb3IcZwGVF DKpIwFdkeEE69H+yFAS/CCiPo+fo1RBXedZLPzxwoGljadGaS1+6X7nww pqgxpsAGh1lsefVbii/JgN+YTZrl9yHpx2nsOxHk1lKG0P4ZOwHejMRog 3PSLllKj9S8VP/FRe0uNvWmbRQ0XQGlXKdodzbxGwnJVCp4xdH+EPRaf0 vYflbBgSCp/6FI68vcXa0nag3ewDsJ30f3BpYwscO3fOXBaEqYHtA5sGY 18ZMdCGXNe3RLXARK4SowECS1R+TFL+vPVr3HCwSLAA8gbDIprvj/c8kJ w==; X-IronPort-AV: E=McAfee;i="6600,9927,10830"; a="357511201" X-IronPort-AV: E=Sophos;i="6.02,244,1688454000"; d="scan'208";a="357511201" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2023 05:54:22 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10830"; a="858304223" X-IronPort-AV: E=Sophos;i="6.02,244,1688454000"; d="scan'208";a="858304223" Received: from mzarkov-mobl3.ger.corp.intel.com (HELO ijarvine-mobl2.ger.corp.intel.com) ([10.252.36.200]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2023 05:54:16 -0700 From: =?utf-8?q?Ilpo_J=C3=A4rvinen?= To: Rob Herring , Bjorn Helgaas , linux-pci@vger.kernel.org, Yoshinori Sato , Rich Felker , John Paul Adrian Glaubitz , linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org Cc: 3chas3@gmail.com, brking@us.ibm.com, ink@jurassic.park.msu.ru, jejb@linux.ibm.com, kw@linux.com, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-atm-general@lists.sourceforge.net, linux-scsi@vger.kernel.org, lpieralisi@kernel.org, martin.petersen@oracle.com, mattst88@gmail.com, netdev@vger.kernel.org, richard.henderson@linaro.org, toan@os.amperecomputing.com, =?utf-8?q?Ilpo_J=C3=A4rvinen?= Subject: [PATCH v3 2/6] sh: pci: Do PCI error check on own line Date: Mon, 11 Sep 2023 15:53:50 +0300 Message-Id: <20230911125354.25501-3-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230911125354.25501-1-ilpo.jarvinen@linux.intel.com> References: <20230911125354.25501-1-ilpo.jarvinen@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Instead of a if condition with a line split, use the usual error handling pattern with a separate variable to improve readability. No functional changes intended. Signed-off-by: Ilpo Järvinen Acked-by: John Paul Adrian Glaubitz --- arch/sh/drivers/pci/common.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/sh/drivers/pci/common.c b/arch/sh/drivers/pci/common.c index 2fd2b77e12ce..f59e5b9a6a80 100644 --- a/arch/sh/drivers/pci/common.c +++ b/arch/sh/drivers/pci/common.c @@ -53,15 +53,16 @@ int __init pci_is_66mhz_capable(struct pci_channel *hose, unsigned short vid; int cap66 = -1; u16 stat; + int ret; pr_info("PCI: Checking 66MHz capabilities...\n"); for (pci_devfn = 0; pci_devfn < 0xff; pci_devfn++) { if (PCI_FUNC(pci_devfn)) continue; - if (early_read_config_word(hose, top_bus, current_bus, - pci_devfn, PCI_VENDOR_ID, &vid) != - PCIBIOS_SUCCESSFUL) + ret = early_read_config_word(hose, top_bus, current_bus, + pci_devfn, PCI_VENDOR_ID, &vid); + if (ret != PCIBIOS_SUCCESSFUL) continue; if (vid == 0xffff) continue; From patchwork Mon Sep 11 12:53:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Ilpo_J=C3=A4rvinen?= X-Patchwork-Id: 13380069 X-Patchwork-Delegate: bhelgaas@google.com 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 82A5ECA0EC4 for ; Mon, 11 Sep 2023 21:41:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350648AbjIKVkS (ORCPT ); Mon, 11 Sep 2023 17:40:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42426 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237504AbjIKMyd (ORCPT ); Mon, 11 Sep 2023 08:54:33 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 95F19E4B; Mon, 11 Sep 2023 05:54:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694436869; x=1725972869; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=RKVN1bWO+6tJ6WlmxsOXbk1vq7oGMYXcJ+RHQjqKcpI=; b=bUWitqMHJGU633zc/Q/sIHhMdeFHAvfs/B8VP5XJ6il1JBZefbVulsxG fA00ac7Cnc/s2hzzvrtjBvHQ3abVM59iirsEfL44JgMnVu6E8DVTJ4YTY aBqVxCFXyX9ZGPjAd/NlthlVSiv6WkggN8i4buRyBOEP7NGwdxvPoGxAQ OwUqoudOJJ4x44nqUCJPy+vDr3jbUo9uSehQSSHUlmmBcws646fMBOMX/ 98LC0B5OOerAZ/G6LP/Mp2YRY4UVMiox4xMS7d9fPR3z7eJfSOCRM0UDg VxgSX5Qc2qeDjwjgj1kx6ibvN5N1OLjQg0I3nksP9OQY8E2fQVwvOFDkb A==; X-IronPort-AV: E=McAfee;i="6600,9927,10830"; a="357511221" X-IronPort-AV: E=Sophos;i="6.02,244,1688454000"; d="scan'208";a="357511221" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2023 05:54:29 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10830"; a="858304289" X-IronPort-AV: E=Sophos;i="6.02,244,1688454000"; d="scan'208";a="858304289" Received: from mzarkov-mobl3.ger.corp.intel.com (HELO ijarvine-mobl2.ger.corp.intel.com) ([10.252.36.200]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2023 05:54:23 -0700 From: =?utf-8?q?Ilpo_J=C3=A4rvinen?= To: Rob Herring , Bjorn Helgaas , linux-pci@vger.kernel.org, Chas Williams <3chas3@gmail.com>, linux-atm-general@lists.sourceforge.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: brking@us.ibm.com, dalias@libc.org, glaubitz@physik.fu-berlin.de, ink@jurassic.park.msu.ru, jejb@linux.ibm.com, kw@linux.com, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-scsi@vger.kernel.org, linux-sh@vger.kernel.org, lpieralisi@kernel.org, martin.petersen@oracle.com, mattst88@gmail.com, richard.henderson@linaro.org, toan@os.amperecomputing.com, ysato@users.sourceforge.jp, =?utf-8?q?Ilpo_J?= =?utf-8?q?=C3=A4rvinen?= Subject: [PATCH v3 3/6] atm: iphase: Do PCI error checks on own line Date: Mon, 11 Sep 2023 15:53:51 +0300 Message-Id: <20230911125354.25501-4-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230911125354.25501-1-ilpo.jarvinen@linux.intel.com> References: <20230911125354.25501-1-ilpo.jarvinen@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org In get_esi() PCI errors are checked inside line-split if conditions (in addition to the file not following the coding style). To make the code in get_esi() more readable, fix the coding style and use the usual error handling pattern with a separate variable. In addition, initialization of 'error' variable at declaration is not needed. No function changes intended. Signed-off-by: Ilpo Järvinen --- drivers/atm/iphase.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/drivers/atm/iphase.c b/drivers/atm/iphase.c index 324148686953..9bba8f280a4d 100644 --- a/drivers/atm/iphase.c +++ b/drivers/atm/iphase.c @@ -2291,19 +2291,21 @@ static int get_esi(struct atm_dev *dev) static int reset_sar(struct atm_dev *dev) { IADEV *iadev; - int i, error = 1; + int i, error; unsigned int pci[64]; iadev = INPH_IA_DEV(dev); - for(i=0; i<64; i++) - if ((error = pci_read_config_dword(iadev->pci, - i*4, &pci[i])) != PCIBIOS_SUCCESSFUL) - return error; + for (i = 0; i < 64; i++) { + error = pci_read_config_dword(iadev->pci, i * 4, &pci[i]); + if (error != PCIBIOS_SUCCESSFUL) + return error; + } writel(0, iadev->reg+IPHASE5575_EXT_RESET); - for(i=0; i<64; i++) - if ((error = pci_write_config_dword(iadev->pci, - i*4, pci[i])) != PCIBIOS_SUCCESSFUL) - return error; + for (i = 0; i < 64; i++) { + error = pci_write_config_dword(iadev->pci, i * 4, pci[i]); + if (error != PCIBIOS_SUCCESSFUL) + return error; + } udelay(5); return 0; } From patchwork Mon Sep 11 12:53:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Ilpo_J=C3=A4rvinen?= X-Patchwork-Id: 13380056 X-Patchwork-Delegate: bhelgaas@google.com 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 B1899CA0EC6 for ; Mon, 11 Sep 2023 21:41:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350573AbjIKVjT (ORCPT ); Mon, 11 Sep 2023 17:39:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47230 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237508AbjIKMyo (ORCPT ); Mon, 11 Sep 2023 08:54:44 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 97597E40; Mon, 11 Sep 2023 05:54:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694436880; x=1725972880; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=QCUHLcOIhxBRk27P/kLo+OYYTB7a6Wv3t3NHhSYLmJ0=; b=gyuhulO1f4sSNWvKqFVmH51yb9CiwI0WX0vTlhOdWgZEkzRDh8i7oSUI 1HiI4MH5LzbH08Jlv96YouT0MWOVBEuA03qRfGoDE4Wfe03shkkf4vmmj bjE1jNGb/c9u/ZxxxJvYxrzyjdbpr35vg2+vp97tehXw9JCNkd7LoAI2T EZWKq1K2w365gAXnXvI0D5y8/hCRbY+7ub+CXWVpDJ02LEWoNz6VNxo1K eZbrHc77ibTY91otw+Lcjg8Li0Xt7msRsQbLZCcsySLO0oz9d9KynZqSS qWnov/S6qEfw5f5WQgfbOd9bJugrKROiUQrdrT32/2sJn7t0A1zLW7Sqv Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10830"; a="357511257" X-IronPort-AV: E=Sophos;i="6.02,244,1688454000"; d="scan'208";a="357511257" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2023 05:54:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10830"; a="858304426" X-IronPort-AV: E=Sophos;i="6.02,244,1688454000"; d="scan'208";a="858304426" Received: from mzarkov-mobl3.ger.corp.intel.com (HELO ijarvine-mobl2.ger.corp.intel.com) ([10.252.36.200]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2023 05:54:34 -0700 From: =?utf-8?q?Ilpo_J=C3=A4rvinen?= To: Rob Herring , Bjorn Helgaas , linux-pci@vger.kernel.org, Bjorn Helgaas , linux-kernel@vger.kernel.org Cc: 3chas3@gmail.com, brking@us.ibm.com, dalias@libc.org, glaubitz@physik.fu-berlin.de, ink@jurassic.park.msu.ru, jejb@linux.ibm.com, kw@linux.com, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-atm-general@lists.sourceforge.net, linux-scsi@vger.kernel.org, linux-sh@vger.kernel.org, lpieralisi@kernel.org, martin.petersen@oracle.com, mattst88@gmail.com, netdev@vger.kernel.org, richard.henderson@linaro.org, toan@os.amperecomputing.com, ysato@users.sourceforge.jp, =?utf-8?q?Ilpo_J?= =?utf-8?q?=C3=A4rvinen?= Subject: [PATCH v3 4/6] PCI: Do error check on own line to split long if conditions Date: Mon, 11 Sep 2023 15:53:52 +0300 Message-Id: <20230911125354.25501-5-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230911125354.25501-1-ilpo.jarvinen@linux.intel.com> References: <20230911125354.25501-1-ilpo.jarvinen@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Placing PCI error code check inside if condition usually results in need to split lines. Combined with additional conditions the if condition becomes messy. Convert to the usual error handling pattern with an additional variable to improve code readability. In addition, reverse the logic in pci_find_vsec_capability() to get rid of &&. No functional changes intended. Signed-off-by: Ilpo Järvinen --- drivers/pci/pci.c | 9 ++++++--- drivers/pci/probe.c | 6 +++--- drivers/pci/quirks.c | 6 +++--- 3 files changed, 12 insertions(+), 9 deletions(-) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 59c01d68c6d5..5e51e8bd5c13 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -732,15 +732,18 @@ u16 pci_find_vsec_capability(struct pci_dev *dev, u16 vendor, int cap) { u16 vsec = 0; u32 header; + int ret; if (vendor != dev->vendor) return 0; while ((vsec = pci_find_next_ext_capability(dev, vsec, PCI_EXT_CAP_ID_VNDR))) { - if (pci_read_config_dword(dev, vsec + PCI_VNDR_HEADER, - &header) == PCIBIOS_SUCCESSFUL && - PCI_VNDR_HEADER_ID(header) == cap) + ret = pci_read_config_dword(dev, vsec + PCI_VNDR_HEADER, &header); + if (ret != PCIBIOS_SUCCESSFUL) + continue; + + if (PCI_VNDR_HEADER_ID(header) == cap) return vsec; } diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index ab2a4a3a4c06..0ad440190a32 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1651,15 +1651,15 @@ static void pci_set_removable(struct pci_dev *dev) static bool pci_ext_cfg_is_aliased(struct pci_dev *dev) { #ifdef CONFIG_PCI_QUIRKS - int pos; + int pos, ret; u32 header, tmp; pci_read_config_dword(dev, PCI_VENDOR_ID, &header); for (pos = PCI_CFG_SPACE_SIZE; pos < PCI_CFG_SPACE_EXP_SIZE; pos += PCI_CFG_SPACE_SIZE) { - if (pci_read_config_dword(dev, pos, &tmp) != PCIBIOS_SUCCESSFUL - || header != tmp) + ret = pci_read_config_dword(dev, pos, &tmp); + if ((ret != PCIBIOS_SUCCESSFUL) || (header != tmp)) return false; } diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 5de09d2eb014..0d2e6b0f56cc 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -5383,7 +5383,7 @@ int pci_dev_specific_disable_acs_redir(struct pci_dev *dev) */ static void quirk_intel_qat_vf_cap(struct pci_dev *pdev) { - int pos, i = 0; + int pos, i = 0, ret; u8 next_cap; u16 reg16, *cap; struct pci_cap_saved_state *state; @@ -5429,8 +5429,8 @@ static void quirk_intel_qat_vf_cap(struct pci_dev *pdev) pdev->pcie_mpss = reg16 & PCI_EXP_DEVCAP_PAYLOAD; pdev->cfg_size = PCI_CFG_SPACE_EXP_SIZE; - if (pci_read_config_dword(pdev, PCI_CFG_SPACE_SIZE, &status) != - PCIBIOS_SUCCESSFUL || (status == 0xffffffff)) + ret = pci_read_config_dword(pdev, PCI_CFG_SPACE_SIZE, &status); + if ((ret != PCIBIOS_SUCCESSFUL) || (status == 0xffffffff)) pdev->cfg_size = PCI_CFG_SPACE_SIZE; if (pci_find_saved_cap(pdev, PCI_CAP_ID_EXP)) From patchwork Mon Sep 11 12:53:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Ilpo_J=C3=A4rvinen?= X-Patchwork-Id: 13380062 X-Patchwork-Delegate: bhelgaas@google.com 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 B4D21CA0EC1 for ; Mon, 11 Sep 2023 21:41:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242254AbjIKVjj (ORCPT ); Mon, 11 Sep 2023 17:39:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36472 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237515AbjIKMyw (ORCPT ); Mon, 11 Sep 2023 08:54:52 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 82E4ECEB; Mon, 11 Sep 2023 05:54:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694436887; x=1725972887; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=icV8SsP9lTlQT1/vuwPuhc7cV1t/gtJOjQvxjYnKJJc=; b=G1dIvOTBrgSZFWWxpdmDDMeOvD/nX0RlC8BmwQlHsZFJmBslmWlZT9jL qifbA/mQj1FPCYf7JWpHatLZYeH5X8BB7V3zLAFFN3g5wwL8uq/BY9D2Y v6xsjuPuBA/SJ/9u+mEl07764CV+zomKs9nZmq0UX5p2RrC1tc7BL+619 T1DjvDDChLfvvGhW8htgM1YqcYpamab+gU2mmo1ipcdiACxhwBpJX39qP SmcI/e05KSMXZlOaKmpMnyBtHlRxNne+3XQCjwex2UylOIp2MP5Vf3bPR Y3X9gQ0/GbmE/7cju0aqLLVJQXqaF57qzdHVxdG6hQyIU0d9RgRl/WFIL w==; X-IronPort-AV: E=McAfee;i="6600,9927,10830"; a="357511278" X-IronPort-AV: E=Sophos;i="6.02,244,1688454000"; d="scan'208";a="357511278" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2023 05:54:47 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10830"; a="858304475" X-IronPort-AV: E=Sophos;i="6.02,244,1688454000"; d="scan'208";a="858304475" Received: from mzarkov-mobl3.ger.corp.intel.com (HELO ijarvine-mobl2.ger.corp.intel.com) ([10.252.36.200]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2023 05:54:41 -0700 From: =?utf-8?q?Ilpo_J=C3=A4rvinen?= To: Rob Herring , Bjorn Helgaas , linux-pci@vger.kernel.org, Toan Le , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Bjorn Helgaas , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: 3chas3@gmail.com, brking@us.ibm.com, dalias@libc.org, glaubitz@physik.fu-berlin.de, ink@jurassic.park.msu.ru, jejb@linux.ibm.com, linux-alpha@vger.kernel.org, linux-atm-general@lists.sourceforge.net, linux-scsi@vger.kernel.org, linux-sh@vger.kernel.org, martin.petersen@oracle.com, mattst88@gmail.com, netdev@vger.kernel.org, richard.henderson@linaro.org, ysato@users.sourceforge.jp, =?utf-8?q?Ilpo_J?= =?utf-8?q?=C3=A4rvinen?= Subject: [PATCH v3 5/6] PCI: xgene: Do PCI error check on own line & keep return value Date: Mon, 11 Sep 2023 15:53:53 +0300 Message-Id: <20230911125354.25501-6-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230911125354.25501-1-ilpo.jarvinen@linux.intel.com> References: <20230911125354.25501-1-ilpo.jarvinen@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Instead of a if condition with a line split, use the usual error handling pattern with a separate variable to improve readability. pci_generic_config_read32() already returns either PCIBIOS_SUCCESSFUL or PCIBIOS_DEVICE_NOT_FOUND so it is enough to simply return its return value when ret != PCIBIOS_SUCCESSFUL. No functional changes intended. Signed-off-by: Ilpo Järvinen --- drivers/pci/controller/pci-xgene.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/pci/controller/pci-xgene.c b/drivers/pci/controller/pci-xgene.c index 887b4941ff32..8e457fa450a2 100644 --- a/drivers/pci/controller/pci-xgene.c +++ b/drivers/pci/controller/pci-xgene.c @@ -163,10 +163,11 @@ static int xgene_pcie_config_read32(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val) { struct xgene_pcie *port = pcie_bus_to_port(bus); + int ret; - if (pci_generic_config_read32(bus, devfn, where & ~0x3, 4, val) != - PCIBIOS_SUCCESSFUL) - return PCIBIOS_DEVICE_NOT_FOUND; + ret = pci_generic_config_read32(bus, devfn, where & ~0x3, 4, val); + if (ret != PCIBIOS_SUCCESSFUL) + return ret; /* * The v1 controller has a bug in its Configuration Request Retry From patchwork Mon Sep 11 12:53:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Ilpo_J=C3=A4rvinen?= X-Patchwork-Id: 13380063 X-Patchwork-Delegate: bhelgaas@google.com 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 E282CCA0EDD for ; Mon, 11 Sep 2023 21:41:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244403AbjIKVjm (ORCPT ); Mon, 11 Sep 2023 17:39:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36506 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237520AbjIKMzB (ORCPT ); Mon, 11 Sep 2023 08:55:01 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8CB85E4B; Mon, 11 Sep 2023 05:54:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694436895; x=1725972895; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=2++8yCZGRSSz4uOxVbgjndMH1wIP9iMn3E11M0dDVTs=; b=gCGHIlGfQjuCY7y+fw999ccOxpU8+lC4sYWL1gBcU19oOVzJJfErBGjc 11x2jZct6m/2n1sAGsv/3jczRAj00bEXS8/EAtvo/GzZU1hrbTc+DHcX+ jfIwgGYkJLgeUJL2SjSlMzpnnXlCQVuARADh1oOqPUIVVTXG7NmaorA3F xZC6eVPZQ5w8JCBNituSRJYblbU4S1sv5HCSW+3F+ozPK/xWYdphrhDi8 mKgQ1Cx0Cq8Co11VohjYDI+CEDGyCvp3+ww0UM8xV3cTRfNiZ2JFwvx2b Xrqp6iD3gf1R5KfMSmMvq946MuR1l6zaBG4DRlb9GG9+dR64CrdowA3Hj Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10830"; a="357511300" X-IronPort-AV: E=Sophos;i="6.02,244,1688454000"; d="scan'208";a="357511300" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2023 05:54:54 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10830"; a="858304520" X-IronPort-AV: E=Sophos;i="6.02,244,1688454000"; d="scan'208";a="858304520" Received: from mzarkov-mobl3.ger.corp.intel.com (HELO ijarvine-mobl2.ger.corp.intel.com) ([10.252.36.200]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2023 05:54:47 -0700 From: =?utf-8?q?Ilpo_J=C3=A4rvinen?= To: Rob Herring , Bjorn Helgaas , linux-pci@vger.kernel.org, Brian King , "James E.J. Bottomley" , "Martin K. Petersen" , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: 3chas3@gmail.com, dalias@libc.org, glaubitz@physik.fu-berlin.de, ink@jurassic.park.msu.ru, kw@linux.com, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-atm-general@lists.sourceforge.net, linux-sh@vger.kernel.org, lpieralisi@kernel.org, mattst88@gmail.com, netdev@vger.kernel.org, richard.henderson@linaro.org, toan@os.amperecomputing.com, ysato@users.sourceforge.jp, =?utf-8?q?Ilpo_J=C3=A4rvinen?= Subject: [PATCH v3 6/6] scsi: ipr: Do PCI error checks on own line Date: Mon, 11 Sep 2023 15:53:54 +0300 Message-Id: <20230911125354.25501-7-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230911125354.25501-1-ilpo.jarvinen@linux.intel.com> References: <20230911125354.25501-1-ilpo.jarvinen@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Instead of if conditions with line splits, use the usual error handling pattern with a separate variable to improve readability. No functional changes intended. Signed-off-by: Ilpo Järvinen Reviewed-by: Martin K. Petersen --- drivers/scsi/ipr.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 4e13797b2a4a..81e3d464d1f6 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -761,12 +761,14 @@ static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) { int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); + int rc; if (pcix_cmd_reg == 0) return 0; - if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, - &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { + rc = pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, + &ioa_cfg->saved_pcix_cmd_reg); + if (rc != PCIBIOS_SUCCESSFUL) { dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); return -EIO; } @@ -785,10 +787,12 @@ static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) { int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); + int rc; if (pcix_cmd_reg) { - if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, - ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { + rc = pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, + ioa_cfg->saved_pcix_cmd_reg); + if (rc != PCIBIOS_SUCCESSFUL) { dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); return -EIO; }