From patchwork Tue Jun 13 17:42:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Wilck X-Patchwork-Id: 13279119 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 73E9FEB64D8 for ; Tue, 13 Jun 2023 17:42:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239672AbjFMRmq (ORCPT ); Tue, 13 Jun 2023 13:42:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38238 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239815AbjFMRmi (ORCPT ); Tue, 13 Jun 2023 13:42:38 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C753C12C; Tue, 13 Jun 2023 10:42:37 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 790331FDB3; Tue, 13 Jun 2023 17:42:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1686678156; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=WzUnbj2Z8R2eaoIp796RXqZoXFmua2lq+BATt4dO7+M=; b=fybD/6nJ5nm9pwxvwVFuQG0PwhN5jYfSiBzz8sB3Ln4enykuiGxKtYMEEvgCvbhkGX9RLF YRBctEUtEnk8V8F1NaHPYS04ujUFUnx1maPd4gDakRFQIqvl3kpo0OYvFMlMoUu6bCeh9z IFGaMWLQ5spHbRIVtmvpc9hYG3eC40k= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 1E28A13483; Tue, 13 Jun 2023 17:42:36 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id UM5yBYyqiGSWXwAAMHmgww (envelope-from ); Tue, 13 Jun 2023 17:42:36 +0000 From: mwilck@suse.com To: "Martin K. Petersen" , Christoph Hellwig , Ming Lei , Bart Van Assche Cc: James Bottomley , linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, Hannes Reinecke , Martin Wilck Subject: [PATCH v6 7/7] scsi: improve warning message in scsi_device_block() Date: Tue, 13 Jun 2023 19:42:27 +0200 Message-Id: <20230613174227.11235-8-mwilck@suse.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230613174227.11235-1-mwilck@suse.com> References: <20230613174227.11235-1-mwilck@suse.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org From: Martin Wilck If __scsi_internal_device_block() returns an error, it is always -EINVAL because of an invalid state transition. For debugging purposes, it makes more sense to print the device state. Signed-off-by: Martin Wilck Reviewed-by: Christoph Hellwig Reviewed-by: Hannes Reinecke --- drivers/scsi/scsi_lib.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 4607e4ea169e..9fe0fe1feba7 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -2790,9 +2790,11 @@ EXPORT_SYMBOL_GPL(scsi_internal_device_block_nowait); static void scsi_device_block(struct scsi_device *sdev, void *data) { int err; + enum scsi_device_state state; mutex_lock(&sdev->state_mutex); err = __scsi_internal_device_block_nowait(sdev); + state = sdev->sdev_state; if (err == 0) /* * scsi_stop_queue() must be called with the state_mutex @@ -2803,8 +2805,8 @@ static void scsi_device_block(struct scsi_device *sdev, void *data) mutex_unlock(&sdev->state_mutex); - WARN_ONCE(err, "__scsi_internal_device_block_nowait(%s) failed: err = %d\n", - dev_name(&sdev->sdev_gendev), err); + WARN_ONCE(err, "%s: failed to block %s in state %d\n", + __func__, dev_name(&sdev->sdev_gendev), state); } /**