From nobody Fri Jun 19 09:07:45 2026 Received: from canpmsgout08.his.huawei.com (canpmsgout08.his.huawei.com [113.46.200.223]) (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 2C86842048; Sat, 25 Apr 2026 06:52:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=113.46.200.223 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777099951; cv=none; b=VlIQnMzhW/UiCKH3t8jJ5ho9Ou8m7RcWLY6AT8QgOxSu1CeSmI1/x29RPq+DxKqGMnQx7aIwLmkon4PB0qxXzztR3JsCzz9en3C/knIHJOCM+Yf9O3i+ZOqzQcQTRpBV9EUG5oWGt/oEw8evHdSNpLmAjtyTaUIjD/uTxAb+/Ko= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777099951; c=relaxed/simple; bh=Z0/R4si3m0KsGY8iqzq4WrXBhTH00RKirdAaWaJD1JY=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=ODmw4P8ztkWSwEcOITnh/y5K5HBKsn98+NgsQiY7sZBBVeqYNwMujjjVwA2Dm+z7dEueULuL1rzxly1Wh/IVmyF9ocFZHDIsrkobGMjtlJVh/hndgYzr+yIyFYSlV/zziAdA+q/Zp1Llu9YxeapUVvXCk7zRlU9/7R2szDz+6zI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=h-partners.com; dkim=pass (1024-bit key) header.d=h-partners.com header.i=@h-partners.com header.b=o+mTjfZj; arc=none smtp.client-ip=113.46.200.223 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=h-partners.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=h-partners.com header.i=@h-partners.com header.b="o+mTjfZj" dkim-signature: v=1; a=rsa-sha256; d=h-partners.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=yl5b3+0xlS1xJi+qRBkprVJDn5eb/BZx2zd32w4xeSE=; b=o+mTjfZjuDKfggS0lTKQa5ptHKPIxOKr99Rue/XV+w5A+/ujB2m/nczufKEbA9MRuA9ZR+GYn wcCrRIoi7/NczkvU9BMDH9sJKlGgHAAwn/1WuTlZmayHwoG7St9YiYbpJ5Xh403cx6msN+p9F/y afnqezhiSLON6y4zdCfR9OU= Received: from mail.maildlp.com (unknown [172.19.163.163]) by canpmsgout08.his.huawei.com (SkyGuard) with ESMTPS id 4g2gMP2QgqzmV6X; Sat, 25 Apr 2026 14:45:53 +0800 (CST) Received: from kwepemh200005.china.huawei.com (unknown [7.202.181.112]) by mail.maildlp.com (Postfix) with ESMTPS id 339234056E; Sat, 25 Apr 2026 14:52:19 +0800 (CST) Received: from localhost.localdomain (10.50.163.32) by kwepemh200005.china.huawei.com (7.202.181.112) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Sat, 25 Apr 2026 14:52:18 +0800 From: Yihang Li To: , CC: , , , , , Subject: [PATCH] scsi: hisi_sas: Add slave_destroy interface for v3 hw Date: Sat, 25 Apr 2026 14:52:18 +0800 Message-ID: <20260425065218.2655578-1-liyihang9@huawei.com> X-Mailer: git-send-email 2.33.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: kwepems500002.china.huawei.com (7.221.188.17) To kwepemh200005.china.huawei.com (7.202.181.112) Content-Type: text/plain; charset="utf-8" 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_d= river+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. So we add the slave_destroy interface, to make sure link is removed after flush workque. Fixes: 16fd4a7c59170 ("scsi: hisi_sas: Add device link between SCSI devices= and hisi_hba") Signed-off-by: Yihang Li --- 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 fda07b193137..f04edcdec66c 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 *s= dev, return 0; =20 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; } =20 +static void slave_destroy_v3_hw(struct scsi_device *sdev) +{ + struct Scsi_Host *shost =3D dev_to_shost(&sdev->sdev_gendev); + struct hisi_hba *hisi_hba =3D shost_priv(shost); + struct device *dev =3D hisi_hba->dev; + + device_link_remove(&sdev->sdev_gendev, dev); +} + static struct attribute *host_v3_hw_attrs[] =3D { &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 =3D { .sg_tablesize =3D HISI_SAS_SGE_PAGE_CNT, .sg_prot_tablesize =3D HISI_SAS_SGE_PAGE_CNT, .sdev_init =3D hisi_sas_sdev_init, + .slave_destroy =3D slave_destroy_v3_hw, .shost_groups =3D host_v3_hw_groups, .sdev_groups =3D sdev_groups_v3_hw, .tag_alloc_policy_rr =3D true, --=20 2.33.0