From patchwork Thu Sep 29 22:44:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 610805 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 5A361C433F5 for ; Thu, 29 Sep 2022 22:46:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230213AbiI2WqL (ORCPT ); Thu, 29 Sep 2022 18:46:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39010 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230262AbiI2Wpg (ORCPT ); Thu, 29 Sep 2022 18:45:36 -0400 Received: from mail-pf1-f176.google.com (mail-pf1-f176.google.com [209.85.210.176]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C83DBD8C for ; Thu, 29 Sep 2022 15:44:38 -0700 (PDT) Received: by mail-pf1-f176.google.com with SMTP id b75so2682650pfb.7 for ; Thu, 29 Sep 2022 15:44:38 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date; bh=GuaxyPekQwOEv+1YHUUtxyW6Rq419NNxCuDWec4VbOA=; b=054aFehUbXjphBX/3mP6DNCU0HWSJsx2j20q5jPMweEyKGzWagOb7B3SEkueqmu/CC mS4D6kXus5rJWBjHjx2H1WfFjMULg59zANmOrC0ydrh1D+GyaS0FysBihyMCEiMO1Vze uURjngzv9gOlZpsYIR9M6wqtbiYaN4uXWux2SELs/f0TLjo0SwQR186/Jetu6MmjqYly pSIFDoDdkSqCrwYwmVOD/S7CXVRnh4lW+x1YUYM+vZgKlnpy+0dOS4O8DHBd8Wz5rpnx Ypmt1PoewQxYyuwYIe6z6IVRoKhSQisQVJ/gRa1/BwU5nIIfNbehT9rXl//y+mjlq5SG xRhQ== X-Gm-Message-State: ACrzQf2+R52zQ3ssAz8FAwDKZZAGc+dXEG/MT46vZxfzKU95e16k8yuH qt/gqIquLzEXtQLdjfBrvu0= X-Google-Smtp-Source: AMsMyM4eYmdWUI/9D7JnW5z2QfC6bU22sdOUMBIGV8ixa4nqX5gkd8faks1o8oaNqFZxM4PjyWv9tA== X-Received: by 2002:a65:6e0f:0:b0:43a:1cd4:4ae6 with SMTP id bd15-20020a656e0f000000b0043a1cd44ae6mr4772174pgb.289.1664491477685; Thu, 29 Sep 2022 15:44:37 -0700 (PDT) Received: from bvanassche-linux.mtv.corp.google.com ([2620:15c:211:201:56f2:482f:20c2:1d35]) by smtp.gmail.com with ESMTPSA id w22-20020a1709026f1600b0016d1b70872asm404508plk.134.2022.09.29.15.44.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 Sep 2022 15:44:37 -0700 (PDT) From: Bart Van Assche To: "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, Bart Van Assche , John Garry , Bradley Grove , Christoph Hellwig , Ming Lei , Hannes Reinecke , Mike Christie , Krzysztof Kozlowski , "James E.J. Bottomley" Subject: [PATCH v6 2/8] scsi: esas2r: Introduce scsi_template_proc_dir() Date: Thu, 29 Sep 2022 15:44:15 -0700 Message-Id: <20220929224421.587465-3-bvanassche@acm.org> X-Mailer: git-send-email 2.38.0.rc1.362.ged0d419d3c-goog In-Reply-To: <20220929224421.587465-1-bvanassche@acm.org> References: <20220929224421.587465-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Prepare for removing the 'proc_dir' and 'present' members from the SCSI host template. This patch does not change any functionality. Reviewed-by: John Garry Cc: Bradley Grove Cc: Christoph Hellwig Cc: Ming Lei Cc: Hannes Reinecke Cc: Mike Christie Cc: Krzysztof Kozlowski Signed-off-by: Bart Van Assche --- drivers/scsi/esas2r/esas2r_main.c | 17 +++++++++++------ drivers/scsi/scsi_proc.c | 11 +++++++++++ include/scsi/scsi_host.h | 6 ++++++ 3 files changed, 28 insertions(+), 6 deletions(-) diff --git a/drivers/scsi/esas2r/esas2r_main.c b/drivers/scsi/esas2r/esas2r_main.c index 27f6e7ccded8..d7a2c49ff5ee 100644 --- a/drivers/scsi/esas2r/esas2r_main.c +++ b/drivers/scsi/esas2r/esas2r_main.c @@ -635,10 +635,13 @@ static void __exit esas2r_exit(void) esas2r_log(ESAS2R_LOG_INFO, "%s called", __func__); if (esas2r_proc_major > 0) { + struct proc_dir_entry *proc_dir; + esas2r_log(ESAS2R_LOG_INFO, "unregister proc"); - remove_proc_entry(ATTONODE_NAME, - esas2r_proc_host->hostt->proc_dir); + proc_dir = scsi_template_proc_dir(esas2r_proc_host->hostt); + if (proc_dir) + remove_proc_entry(ATTONODE_NAME, proc_dir); unregister_chrdev(esas2r_proc_major, ESAS2R_DRVR_NAME); esas2r_proc_major = 0; @@ -728,11 +731,13 @@ const char *esas2r_info(struct Scsi_Host *sh) esas2r_proc_major); if (esas2r_proc_major > 0) { - struct proc_dir_entry *pde; + struct proc_dir_entry *proc_dir; + struct proc_dir_entry *pde = NULL; - pde = proc_create(ATTONODE_NAME, 0, - sh->hostt->proc_dir, - &esas2r_proc_ops); + proc_dir = scsi_template_proc_dir(sh->hostt); + if (proc_dir) + pde = proc_create(ATTONODE_NAME, 0, proc_dir, + &esas2r_proc_ops); if (!pde) { esas2r_log_dev(ESAS2R_LOG_WARN, diff --git a/drivers/scsi/scsi_proc.c b/drivers/scsi/scsi_proc.c index 95aee1ad1383..456b43097288 100644 --- a/drivers/scsi/scsi_proc.c +++ b/drivers/scsi/scsi_proc.c @@ -83,6 +83,17 @@ static int proc_scsi_host_open(struct inode *inode, struct file *file) 4 * PAGE_SIZE); } +/** + * scsi_template_proc_dir() - returns the procfs dir for a SCSI host template + * @sht: SCSI host template pointer. + */ +struct proc_dir_entry * +scsi_template_proc_dir(const struct scsi_host_template *sht) +{ + return sht->proc_dir; +} +EXPORT_SYMBOL_GPL(scsi_template_proc_dir); + static const struct proc_ops proc_scsi_ops = { .proc_open = proc_scsi_host_open, .proc_release = single_release, diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index aa7b7496c93a..c2b8427e0305 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -752,6 +752,12 @@ extern struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *, int); extern int __must_check scsi_add_host_with_dma(struct Scsi_Host *, struct device *, struct device *); +#if defined(CONFIG_SCSI_PROC_FS) +struct proc_dir_entry * +scsi_template_proc_dir(const struct scsi_host_template *sht); +#else +#define scsi_template_proc_dir(sht) NULL +#endif extern void scsi_scan_host(struct Scsi_Host *); extern void scsi_rescan_device(struct device *); extern void scsi_remove_host(struct Scsi_Host *);