From patchwork Fri Jan 28 00:27:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Widawsky X-Patchwork-Id: 12727593 Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) (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 4BAF96D19; Fri, 28 Jan 2022 00:27:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1643329650; x=1674865650; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=I2mDMGeUO3hX56XamEiDwM3Cha4aTFhKrdNK7gj9sTo=; b=lH0XYpuJRcuH1cvrZ8GxLD38OLG2BpKqg3BBAJNhilyzAAxiGjFnBiJl JkCVZ+dCFww3igRdFJvgKIXn5uYkP95DCzXs4X/K6wJP/+fMT7wIvFGab LyAFJpHozHg+9NPbDQJ2XqfwBXBuFGB60zKvNgXoprwbm+My56qAslmBT YHT0gV3YQJYFgvPQyc6sZVtED69Jcb+48CgoKIX9bRbW8zAd6VN7kujbQ rAF+1IldumtS3uI/ELV/WYjib0oiwUxwcomfQ5BqJodrtpy52FYyLg877 bC2tsYOwoldYX2WTWyZ1I3PMwMXi8zIQ0UoYP504+HjDdP0i7NmvLspMp A==; X-IronPort-AV: E=McAfee;i="6200,9189,10239"; a="226982092" X-IronPort-AV: E=Sophos;i="5.88,322,1635231600"; d="scan'208";a="226982092" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jan 2022 16:27:30 -0800 X-IronPort-AV: E=Sophos;i="5.88,322,1635231600"; d="scan'208";a="674909660" Received: from vrao2-mobl1.gar.corp.intel.com (HELO localhost.localdomain) ([10.252.129.6]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jan 2022 16:27:29 -0800 From: Ben Widawsky To: linux-cxl@vger.kernel.org Cc: patches@lists.linux.dev, Ben Widawsky , Alison Schofield , Dan Williams , Ira Weiny , Jonathan Cameron , Vishal Verma , Bjorn Helgaas , nvdimm@lists.linux.dev, linux-pci@vger.kernel.org Subject: [PATCH v3 13/14] cxl/pmem: Convert nvdimm bridge API to use dev Date: Thu, 27 Jan 2022 16:27:06 -0800 Message-Id: <20220128002707.391076-14-ben.widawsky@intel.com> X-Mailer: git-send-email 2.35.0 In-Reply-To: <20220128002707.391076-1-ben.widawsky@intel.com> References: <20220128002707.391076-1-ben.widawsky@intel.com> Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The cxl_pmem driver specific cxl_nvdimm structure isn't a suitable parameter for an exported API that can be used by other drivers. Instead, use a dev structure, which should be woven into any caller using this API. This will allow for either the nvdimm's dev, or the memdev's dev to be used. Signed-off-by: Ben Widawsky --- Changes since v2: - Added kdoc to cxl_find_nvdimm_bridge() --- drivers/cxl/core/pmem.c | 12 +++++++++--- drivers/cxl/cxl.h | 2 +- drivers/cxl/pmem.c | 2 +- 3 files changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/cxl/core/pmem.c b/drivers/cxl/core/pmem.c index 8de240c4d96b..7e431667ade1 100644 --- a/drivers/cxl/core/pmem.c +++ b/drivers/cxl/core/pmem.c @@ -62,10 +62,16 @@ static int match_nvdimm_bridge(struct device *dev, void *data) return is_cxl_nvdimm_bridge(dev); } -struct cxl_nvdimm_bridge *cxl_find_nvdimm_bridge(struct cxl_nvdimm *cxl_nvd) +/** + * cxl_find_nvdimm_bridge() - Find an nvdimm bridge for a given device + * @dev: The device to find a bridge for. This device must be in the part of the + * CXL topology which is being bridged. + * + * Return: bridge device that hosts cxl_nvdimm objects if found, else NULL. + */ +struct cxl_nvdimm_bridge *cxl_find_nvdimm_bridge(struct device *dev) { - struct cxl_port *port = find_cxl_root(&cxl_nvd->dev); - struct device *dev; + struct cxl_port *port = find_cxl_root(dev); if (!port) return NULL; diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h index f9dab312ed26..062654204eca 100644 --- a/drivers/cxl/cxl.h +++ b/drivers/cxl/cxl.h @@ -479,7 +479,7 @@ struct cxl_nvdimm *to_cxl_nvdimm(struct device *dev); bool is_cxl_nvdimm(struct device *dev); bool is_cxl_nvdimm_bridge(struct device *dev); int devm_cxl_add_nvdimm(struct device *host, struct cxl_memdev *cxlmd); -struct cxl_nvdimm_bridge *cxl_find_nvdimm_bridge(struct cxl_nvdimm *cxl_nvd); +struct cxl_nvdimm_bridge *cxl_find_nvdimm_bridge(struct device *dev); /* * Unit test builds overrides this to __weak, find the 'strong' version diff --git a/drivers/cxl/pmem.c b/drivers/cxl/pmem.c index 15ad666ab03e..fabdb0c6dbf2 100644 --- a/drivers/cxl/pmem.c +++ b/drivers/cxl/pmem.c @@ -39,7 +39,7 @@ static int cxl_nvdimm_probe(struct device *dev) struct nvdimm *nvdimm; int rc; - cxl_nvb = cxl_find_nvdimm_bridge(cxl_nvd); + cxl_nvb = cxl_find_nvdimm_bridge(&cxl_nvd->dev); if (!cxl_nvb) return -ENXIO;