From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 E1F66231829; Tue, 21 Jul 2026 17:45:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784655923; cv=none; b=bumjLLAtIaebQOYG7SsnhytizSTjaMS3FDnWCl1T4g/kkjqgfEo6SO7evW/ErmqH6WXlcRBUtSYiGHWVDpxk7D01PYIEMX1W569Xp1tgOFW4oPOTSuLWHGcWJThkQ7+/GikIFflLcX88drNQpLnetRT52ZKzlLwVsXjwzxn03K0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784655923; c=relaxed/simple; bh=qiyF0E01vARkU0gFV7/O2iyFtZBKKUdHX8dzb0AP1S0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nRz9ZzIfvy0bSMiB5Xx6OXDpXHKPaZR5gFzIu8AG+aClfGTaXinBr72mgSa4dhmThPTlNQYR+MiHMiuueoJXxtfN89T20bho4UFJbb904iIEteBc9Wj9w8Xz7Dmr2WKlhast16Z9FCRlf3JAzh4zxupZrRw/6vcwq67Ev1g70Tw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=lqkb62fq; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="lqkb62fq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 53FE31F00A3A; Tue, 21 Jul 2026 17:45:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784655921; bh=S5hlHwUoLW8ZoohJ9cWGB2krZiF51cq3coZiTdBxqc0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=lqkb62fq328xqJ4CP1uCyTYOTSL2YMxgQsqQZCmeDWLV21VFrtZfhaqNP1xJJc0EM gzlXxSsQT7eRXKng7z+iFlV1wQ5S13aOp7J3RkS8MBPka6DGhiatNTdGMuIphzhBXw z4xV5AyPDSo9m/F74OHnghJMgFaoUC/up0X2QtTw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yihang Li , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 6.18 0148/1611] scsi: hisi_sas: Add slave_destroy interface for v3 hw Date: Tue, 21 Jul 2026 17:04:24 +0200 Message-ID: <20260721152518.207372233@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152514.750365251@linuxfoundation.org> References: <20260721152514.750365251@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Yihang Li [ Upstream commit 67b85a88265df19f049241d8c00571a5408f4eeb ] WARNING is triggered when executing link reset of remote PHY and rmmod SAS driver simultaneously. Following is the WARNING log: WARNING: CPU: 61 PID: 21818 at drivers/base/core.c:1347 __device_links_no_driver+0xb4/0xc0 Call trace: __device_links_no_driver+0xb4/0xc0 device_links_driver_cleanup+0xb0/0xfc __device_release_driver+0x198/0x23c device_release_driver+0x38/0x50 bus_remove_device+0x130/0x140 device_del+0x184/0x434 __scsi_remove_device+0x118/0x150 scsi_remove_target+0x1bc/0x240 sas_rphy_remove+0x90/0x94 sas_rphy_delete+0x24/0x3c sas_destruct_devices+0x64/0xa0 [libsas] sas_revalidate_domain+0xe4/0x150 [libsas] process_one_work+0x1e0/0x46c worker_thread+0x15c/0x464 kthread+0x160/0x170 ret_from_fork+0x10/0x20 ---[ end trace 71e059eb58f85d4a ]--- During SAS phy up, link->status is set to DL_STATE_AVAILABLE in device_links_driver_bound, then this setting influences __device_links_no_driver() before driver rmmod and caused WARNING. Add the slave_destroy interface to make sure link is removed after flush workque. Fixes: 16fd4a7c5917 ("scsi: hisi_sas: Add device link between SCSI devices and hisi_hba") Signed-off-by: Yihang Li Link: https://patch.msgid.link/20260425082056.2749910-1-liyihang9@huawei.com Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index f69efc6494b8e2..f30d4a58d7ab54 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -2977,7 +2977,7 @@ static int sdev_configure_v3_hw(struct scsi_device *sdev, return 0; if (!device_link_add(&sdev->sdev_gendev, dev, - DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE)) { + DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE)) { if (pm_runtime_enabled(dev)) { dev_info(dev, "add device link failed, disable runtime PM for the host\n"); pm_runtime_disable(dev); @@ -2987,6 +2987,15 @@ static int sdev_configure_v3_hw(struct scsi_device *sdev, return 0; } +static void hisi_sas_sdev_destroy(struct scsi_device *sdev) +{ + struct Scsi_Host *shost = dev_to_shost(&sdev->sdev_gendev); + struct hisi_hba *hisi_hba = shost_priv(shost); + struct device *dev = hisi_hba->dev; + + device_link_remove(&sdev->sdev_gendev, dev); +} + static struct attribute *host_v3_hw_attrs[] = { &dev_attr_phy_event_threshold.attr, &dev_attr_intr_conv_v3_hw.attr, @@ -3401,6 +3410,7 @@ static const struct scsi_host_template sht_v3_hw = { .sg_tablesize = HISI_SAS_SGE_PAGE_CNT, .sg_prot_tablesize = HISI_SAS_SGE_PAGE_CNT, .sdev_init = hisi_sas_sdev_init, + .sdev_destroy = hisi_sas_sdev_destroy, .shost_groups = host_v3_hw_groups, .sdev_groups = sdev_groups_v3_hw, .tag_alloc_policy_rr = true, -- 2.53.0