From patchwork Fri Feb 19 18:16:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 1442410 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4Dj0Pw2t7Bz9sVv for ; Sat, 20 Feb 2021 05:25:56 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229799AbhBSSZm (ORCPT ); Fri, 19 Feb 2021 13:25:42 -0500 Received: from cloudserver094114.home.pl ([79.96.170.134]:47436 "EHLO cloudserver094114.home.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229683AbhBSSZk (ORCPT ); Fri, 19 Feb 2021 13:25:40 -0500 Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_smtp) via UNIX with SMTP (IdeaSmtpServer 0.83.537) id ad559b126ce7d5d3; Fri, 19 Feb 2021 19:18:16 +0100 Received: from kreacher.localnet (89-64-81-29.dynamic.chello.pl [89.64.81.29]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by v370.home.net.pl (Postfix) with ESMTPSA id DC040661E07; Fri, 19 Feb 2021 19:18:15 +0100 (CET) From: "Rafael J. Wysocki" To: Linux ACPI Cc: Linux PCI , LKML , Bjorn Helgaas , Hanjun Guo Subject: [PATCH v1 2/4] ACPI: PCI: Replace ACPI_DEBUG_PRINT() and ACPI_EXCEPTION() Date: Fri, 19 Feb 2021 19:16:10 +0100 Message-ID: <3010705.Er5mbVqhuS@kreacher> In-Reply-To: <4822757.tvZ08WQ2Gl@kreacher> References: <4822757.tvZ08WQ2Gl@kreacher> MIME-Version: 1.0 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgeduledrjeeigddutdelucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecujffqoffgrffnpdggtffipffknecuuegrihhlohhuthemucduhedtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvffufffkjghfggfgtgesthfuredttddtvdenucfhrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqeenucggtffrrghtthgvrhhnpefgleehfffhtefflefhleetjeffteettefgteekjedvhfeffedtueefveegveeiveenucfkphepkeelrdeigedrkedurddvleenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeekledrieegrdekuddrvdelpdhhvghlohepkhhrvggrtghhvghrrdhlohgtrghlnhgvthdpmhgrihhlfhhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqpdhrtghpthhtoheplhhinhhugidqrggtphhisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqphgtihesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehhvghlghgrrghssehkvghrnhgvlhdrohhrghdprhgtphhtthhopehguhhohhgrnhhjuhhnsehhuhgrfigvihdrtgho mh X-DCC--Metrics: v370.home.net.pl 1024; Body=5 Fuz1=5 Fuz2=5 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Rafael J. Wysocki The ACPI_DEBUG_PRINT() and ACPI_EXCEPTION() macros are used for message printing in the ACPICA code and they should not be used elsewhere. Special configuration (either kernel command line or sysfs-based) is needed to see the messages printed by them and the format of those messages is also special and convoluted. For this reason, replace all of the ACPI_DEBUG_PRINT() and ACPI_EXCEPTION() instances in pci_link.c with acpi_handle_*() calls relative to the ACPI handle of the given link device (wherever that handle is readily available) or pr_debug() invocations. While at it, make acpi_pci_link_check_current() print all messages with pr_debug(), because all of them are in the same category (_CRS return buffer issues) and they all should be printed at the same log level. Also make acpi_pci_link_set() use acpi_handle_*() for printing all messages for consistency. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/pci_link.c | 80 +++++++++++++++++++++--------------------------- 1 file changed, 36 insertions(+), 44 deletions(-) Index: linux-pm/drivers/acpi/pci_link.c =================================================================== --- linux-pm.orig/drivers/acpi/pci_link.c +++ linux-pm/drivers/acpi/pci_link.c @@ -27,8 +27,6 @@ #include "internal.h" -#define _COMPONENT ACPI_PCI_COMPONENT -ACPI_MODULE_NAME("pci_link"); #define ACPI_PCI_LINK_CLASS "pci_irq_routing" #define ACPI_PCI_LINK_DEVICE_NAME "PCI Interrupt Link" #define ACPI_PCI_LINK_MAX_POSSIBLE 16 @@ -85,6 +83,7 @@ static acpi_status acpi_pci_link_check_p void *context) { struct acpi_pci_link *link = context; + acpi_handle handle = link->device->handle; u32 i; switch (resource->type) { @@ -95,8 +94,8 @@ static acpi_status acpi_pci_link_check_p { struct acpi_resource_irq *p = &resource->data.irq; if (!p || !p->interrupt_count) { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Blank _PRS IRQ resource\n")); + acpi_handle_debug(handle, + "Blank _PRS IRQ resource\n"); return AE_OK; } for (i = 0; @@ -153,18 +152,18 @@ static acpi_status acpi_pci_link_check_p static int acpi_pci_link_get_possible(struct acpi_pci_link *link) { + acpi_handle handle = link->device->handle; acpi_status status; - status = acpi_walk_resources(link->device->handle, METHOD_NAME__PRS, + status = acpi_walk_resources(handle, METHOD_NAME__PRS, acpi_pci_link_check_possible, link); if (ACPI_FAILURE(status)) { - acpi_handle_debug(link->device->handle, "_PRS not present or invalid"); + acpi_handle_debug(handle, "_PRS not present or invalid"); return 0; } - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Found %d possible IRQs\n", - link->irq.possible_count)); + acpi_handle_debug(handle, "Found %d possible IRQs\n", + link->irq.possible_count); return 0; } @@ -186,8 +185,7 @@ static acpi_status acpi_pci_link_check_c * IRQ descriptors may have no IRQ# bits set, * particularly those those w/ _STA disabled */ - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Blank _CRS IRQ resource\n")); + pr_debug("Blank _CRS IRQ resource\n"); return AE_OK; } *irq = p->interrupts[0]; @@ -202,8 +200,7 @@ static acpi_status acpi_pci_link_check_c * extended IRQ descriptors must * return at least 1 IRQ */ - printk(KERN_WARNING PREFIX - "Blank _CRS EXT IRQ resource\n"); + pr_debug("Blank _CRS EXT IRQ resource\n"); return AE_OK; } *irq = p->interrupts[0]; @@ -211,8 +208,8 @@ static acpi_status acpi_pci_link_check_c } break; default: - printk(KERN_ERR PREFIX "_CRS resource type 0x%x isn't an IRQ\n", - resource->type); + pr_debug("_CRS resource type 0x%x is not IRQ\n", + resource->type); return AE_OK; } @@ -228,8 +225,9 @@ static acpi_status acpi_pci_link_check_c */ static int acpi_pci_link_get_current(struct acpi_pci_link *link) { - int result = 0; + acpi_handle handle = link->device->handle; acpi_status status; + int result = 0; int irq = 0; link->irq.active = 0; @@ -239,12 +237,12 @@ static int acpi_pci_link_get_current(str /* Query _STA, set link->device->status */ result = acpi_bus_get_status(link->device); if (result) { - printk(KERN_ERR PREFIX "Unable to read status\n"); + acpi_handle_err(handle, "Unable to read status\n"); goto end; } if (!link->device->status.enabled) { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Link disabled\n")); + acpi_handle_debug(handle, "Link disabled\n"); return 0; } } @@ -253,22 +251,23 @@ static int acpi_pci_link_get_current(str * Query and parse _CRS to get the current IRQ assignment. */ - status = acpi_walk_resources(link->device->handle, METHOD_NAME__CRS, + status = acpi_walk_resources(handle, METHOD_NAME__CRS, acpi_pci_link_check_current, &irq); if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, "Evaluating _CRS")); + acpi_handle_warn(handle, "_CRS evaluation failed: %s\n", + acpi_format_exception(status)); result = -ENODEV; goto end; } if (acpi_strict && !irq) { - printk(KERN_ERR PREFIX "_CRS returned 0\n"); + acpi_handle_err(handle, "_CRS returned 0\n"); result = -ENODEV; } link->irq.active = irq; - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Link at IRQ %d \n", link->irq.active)); + acpi_handle_debug(handle, "Link at IRQ %d \n", link->irq.active); end: return result; @@ -276,13 +275,14 @@ static int acpi_pci_link_get_current(str static int acpi_pci_link_set(struct acpi_pci_link *link, int irq) { - int result; - acpi_status status; struct { struct acpi_resource res; struct acpi_resource end; } *resource; struct acpi_buffer buffer = { 0, NULL }; + acpi_handle handle = link->device->handle; + acpi_status status; + int result; if (!irq) return -EINVAL; @@ -329,7 +329,8 @@ static int acpi_pci_link_set(struct acpi /* ignore resource_source, it's optional */ break; default: - printk(KERN_ERR PREFIX "Invalid Resource_type %d\n", link->irq.resource_type); + acpi_handle_err(handle, "Invalid resource type %d\n", + link->irq.resource_type); result = -EINVAL; goto end; @@ -342,7 +343,8 @@ static int acpi_pci_link_set(struct acpi /* check for total failure */ if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, "Evaluating _SRS")); + acpi_handle_warn(handle, "_SRS evaluation failed: %s", + acpi_format_exception(status)); result = -ENODEV; goto end; } @@ -350,15 +352,11 @@ static int acpi_pci_link_set(struct acpi /* Query _STA, set device->status */ result = acpi_bus_get_status(link->device); if (result) { - printk(KERN_ERR PREFIX "Unable to read status\n"); + acpi_handle_err(handle, "Unable to read status\n"); goto end; } - if (!link->device->status.enabled) { - printk(KERN_WARNING PREFIX - "%s [%s] disabled and referenced, BIOS bug\n", - acpi_device_name(link->device), - acpi_device_bid(link->device)); - } + if (!link->device->status.enabled) + acpi_handle_warn(handle, "Disabled and referenced, BIOS bug\n"); /* Query _CRS, set link->irq.active */ result = acpi_pci_link_get_current(link); @@ -375,14 +373,12 @@ static int acpi_pci_link_set(struct acpi * policy: when _CRS doesn't return what we just _SRS * assume _SRS worked and override _CRS value. */ - printk(KERN_WARNING PREFIX - "%s [%s] BIOS reported IRQ %d, using IRQ %d\n", - acpi_device_name(link->device), - acpi_device_bid(link->device), link->irq.active, irq); + acpi_handle_warn(handle, "BIOS reported IRQ %d, using IRQ %d\n", + link->irq.active, irq); link->irq.active = irq; } - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Set IRQ %d\n", link->irq.active)); + acpi_handle_debug(handle, "Set IRQ %d\n", link->irq.active); end: kfree(resource); @@ -656,9 +652,7 @@ int acpi_pci_link_allocate_irq(acpi_hand *polarity = link->irq.polarity; if (name) *name = acpi_device_bid(link->device); - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Link %s is referenced\n", - acpi_device_bid(link->device))); + acpi_handle_debug(handle, "Link is referenced\n"); return link->irq.active; } @@ -702,9 +696,7 @@ int acpi_pci_link_free_irq(acpi_handle h */ link->refcnt--; #endif - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Link %s is dereferenced\n", - acpi_device_bid(link->device))); + acpi_handle_debug(handle, "Link is dereferenced\n"); if (link->refcnt == 0) acpi_evaluate_object(link->device->handle, "_DIS", NULL, NULL);