From patchwork Mon Sep 25 14:48:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michal Wilczynski X-Patchwork-Id: 727169 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5B8FB1C295 for ; Mon, 25 Sep 2023 14:49:40 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B6C3510F; Mon, 25 Sep 2023 07:49:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695653378; x=1727189378; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=8mnjbIMRHs3Br7O5LAy7rYDYZ+KkPj/05DV8Q4PK/as=; b=Ngxp6iN4bf6PUispXDUCiaHVWJQZHi9XTfdLu0z5q5FUs3NQmSM9PZls o+8eHiayszqWXS22HSvXCaUA8h1C6PdBsynWfmtLQ4BC8epEhQ0B3V2nh Bm219VCyYPEUZQg118Zri6Uirmvg49im/VL/uHqLO+qghKKUyRZI6O9Cr U8uXEhwGQXx8WDNnDw0+Usx5p+kpdGMr4jePh46UKgZUPbLfLQmxcGUY5 yUtgsurfiLPJW9KspZPSuohPmo0y8571/29MZoPWcnrQ3e6lujdeJ8K/O wTsXlcAAXlknkqsDQHVJ/P5j2GHRSnvr/KE7Qt/2sniS6ardTkokuCnGQ g==; X-IronPort-AV: E=McAfee;i="6600,9927,10843"; a="378548090" X-IronPort-AV: E=Sophos;i="6.03,175,1694761200"; d="scan'208";a="378548090" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Sep 2023 07:49:38 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10843"; a="995409527" X-IronPort-AV: E=Sophos;i="6.03,175,1694761200"; d="scan'208";a="995409527" Received: from powerlab.fi.intel.com ([10.237.71.25]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Sep 2023 07:49:34 -0700 From: Michal Wilczynski To: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, nvdimm@lists.linux.dev Cc: rafael.j.wysocki@intel.com, andriy.shevchenko@intel.com, lenb@kernel.org, dan.j.williams@intel.com, vishal.l.verma@intel.com, ira.weiny@intel.com, rui.zhang@intel.com, Michal Wilczynski Subject: [PATCH v1 7/9] ACPI: NFIT: Replace acpi_driver with platform_driver Date: Mon, 25 Sep 2023 17:48:40 +0300 Message-ID: <20230925144842.586829-8-michal.wilczynski@intel.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230925144842.586829-1-michal.wilczynski@intel.com> References: <20230925144842.586829-1-michal.wilczynski@intel.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net NFIT driver uses struct acpi_driver incorrectly to register itself. This is wrong as the instances of the ACPI devices are not meant to be literal devices, they're supposed to describe ACPI entry of a particular device. Use platform_driver instead of acpi_driver. In relevant places call platform devices instances pdev to make a distinction with ACPI devices instances. NFIT driver uses devm_*() family of functions extensively. This change has no impact on correct functioning of the whole devm_*() family of functions, since the lifecycle of the device stays the same. It is still being created during the enumeration, and destroyed on platform device removal. Suggested-by: Rafael J. Wysocki Signed-off-by: Michal Wilczynski --- drivers/acpi/nfit/core.c | 34 ++++++++++++++++++---------------- 1 file changed, 18 insertions(+), 16 deletions(-) diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index 821870f57862..2e50b1334a69 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include "intel.h" @@ -98,7 +99,7 @@ static struct acpi_device *to_acpi_dev(struct acpi_nfit_desc *acpi_desc) || strcmp(nd_desc->provider_name, "ACPI.NFIT") != 0) return NULL; - return to_acpi_device(acpi_desc->dev); + return ACPI_COMPANION(acpi_desc->dev); } static int xlat_bus_status(void *buf, unsigned int cmd, u32 status) @@ -3284,11 +3285,11 @@ static void acpi_nfit_put_table(void *table) static void acpi_nfit_notify(acpi_handle handle, u32 event, void *data) { - struct acpi_device *adev = data; + struct device *dev = data; - device_lock(&adev->dev); - __acpi_nfit_notify(&adev->dev, handle, event); - device_unlock(&adev->dev); + device_lock(dev); + __acpi_nfit_notify(dev, handle, event); + device_unlock(dev); } static void acpi_nfit_remove_notify_handler(void *data) @@ -3329,11 +3330,12 @@ void acpi_nfit_shutdown(void *data) } EXPORT_SYMBOL_GPL(acpi_nfit_shutdown); -static int acpi_nfit_add(struct acpi_device *adev) +static int acpi_nfit_probe(struct platform_device *pdev) { struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL }; struct acpi_nfit_desc *acpi_desc; - struct device *dev = &adev->dev; + struct device *dev = &pdev->dev; + struct acpi_device *adev = ACPI_COMPANION(dev); struct acpi_table_header *tbl; acpi_status status = AE_OK; acpi_size sz; @@ -3360,7 +3362,7 @@ static int acpi_nfit_add(struct acpi_device *adev) acpi_desc = devm_kzalloc(dev, sizeof(*acpi_desc), GFP_KERNEL); if (!acpi_desc) return -ENOMEM; - acpi_nfit_desc_init(acpi_desc, &adev->dev); + acpi_nfit_desc_init(acpi_desc, dev); /* Save the acpi header for exporting the revision via sysfs */ acpi_desc->acpi_header = *tbl; @@ -3391,7 +3393,7 @@ static int acpi_nfit_add(struct acpi_device *adev) return rc; rc = acpi_dev_install_notify_handler(adev->handle, ACPI_DEVICE_NOTIFY, - acpi_nfit_notify, adev); + acpi_nfit_notify, dev); if (rc) return rc; @@ -3475,11 +3477,11 @@ static const struct acpi_device_id acpi_nfit_ids[] = { }; MODULE_DEVICE_TABLE(acpi, acpi_nfit_ids); -static struct acpi_driver acpi_nfit_driver = { - .name = KBUILD_MODNAME, - .ids = acpi_nfit_ids, - .ops = { - .add = acpi_nfit_add, +static struct platform_driver acpi_nfit_driver = { + .probe = acpi_nfit_probe, + .driver = { + .name = KBUILD_MODNAME, + .acpi_match_table = acpi_nfit_ids, }, }; @@ -3517,7 +3519,7 @@ static __init int nfit_init(void) return -ENOMEM; nfit_mce_register(); - ret = acpi_bus_register_driver(&acpi_nfit_driver); + ret = platform_driver_register(&acpi_nfit_driver); if (ret) { nfit_mce_unregister(); destroy_workqueue(nfit_wq); @@ -3530,7 +3532,7 @@ static __init int nfit_init(void) static __exit void nfit_exit(void) { nfit_mce_unregister(); - acpi_bus_unregister_driver(&acpi_nfit_driver); + platform_driver_unregister(&acpi_nfit_driver); destroy_workqueue(nfit_wq); WARN_ON(!list_empty(&acpi_descs)); }