From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 11100214A9B; Tue, 8 Jul 2025 16:45:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751993139; cv=none; b=XqpiV2rpe4iJ7mth0WKI4h6gP21zPCqa1QTM8AOB+KkPrJblleAs5BrqlgrKJiZx6O0Ub/MzIqWjfi98P/9yaWJc1Jm/joi5NPpf882mkcsUPJhNNFANfmfK2tCOOD+R+IgtgVn/G9phexGQV2bH626nWAl0ePLgqqM01buSjT4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751993139; c=relaxed/simple; bh=qQp/1NJVTJCzmAu4dCAGQ5r8JTzLnNgy+9p8uuQO6fA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IOWWpJi+D3MavjPrvrvHLtCDheX5nrs+AQ2SEGnTT8wdJldIajdO6fDM01/H54XrpZ7dBINSDJQHpkAJR5SKyPjZEKqrhPWtSTGP2oiQWhGbwxoJHQq67ba/jt+LK20soUbga16H3+/3CZZVINCuutZRMcjmx3w584MgzzwLN7k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=JmIK8TO/; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="JmIK8TO/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 12879C4CEED; Tue, 8 Jul 2025 16:45:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1751993137; bh=qQp/1NJVTJCzmAu4dCAGQ5r8JTzLnNgy+9p8uuQO6fA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JmIK8TO/w7LwshM3D55P+cyzWaxj30JTlW+R1fS9IS5bLU6gp18KsoFBiAaJ1Ly5x BFC7MKwkjGtzGR97rWWZ4K5ANrzTfVispu67j80SRvCDiTpZErnMz4lFFpXMhTrnYo iRLS2uBsWSNNdgfh07kO66vH/nm36e5BS/wu7UaE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Marco Patalano , "Ewan D. Milne" , Justin Tee , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 6.12 170/232] scsi: lpfc: Restore clearing of NLP_UNREG_INP in ndlp->nlp_flag Date: Tue, 8 Jul 2025 18:22:46 +0200 Message-ID: <20250708162245.888135371@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250708162241.426806072@linuxfoundation.org> References: <20250708162241.426806072@linuxfoundation.org> User-Agent: quilt/0.68 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 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ewan D. Milne [ Upstream commit 040492ac2578b66d3ff4dcefb4f56811634de53d ] Commit 32566a6f1ae5 ("scsi: lpfc: Remove NLP_RELEASE_RPI flag from nodelist structure") introduced a regression with SLI-3 adapters (e.g. LPe12000 8Gb) where a Link Down / Link Up such as caused by disabling an host FC switch port would result in the devices remaining in the transport-offline state and multipath reporting them as failed. This problem was not seen with newer SLI-4 adapters. The problem was caused by portions of the patch which removed the functions __lpfc_sli_rpi_release() and lpfc_sli_rpi_release() and all their callers. This was presumably because with the removal of the NLP_RELEASE_RPI flag there was no need to free the rpi. However, __lpfc_sli_rpi_release() and lpfc_sli_rpi_release() which calls it reset the NLP_UNREG_INP flag. And, lpfc_sli_def_mbox_cmpl() has a path where __lpfc_sli_rpi_release() was called in a particular case where NLP_UNREG_INP was not otherwise cleared because of other conditions. Restoring the else clause of this conditional and simply clearing the NLP_UNREG_INP flag appears to resolve the problem with SLI-3 adapters. It should be noted that the code path in question is not specific to SLI-3, but there are other SLI-4 code paths which may have masked the issue. Fixes: 32566a6f1ae5 ("scsi: lpfc: Remove NLP_RELEASE_RPI flag from nodelist structure") Cc: stable@vger.kernel.org Tested-by: Marco Patalano Signed-off-by: Ewan D. Milne Link: https://lore.kernel.org/r/20250317163731.356873-1-emilne@redhat.com Reviewed-by: Justin Tee Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/lpfc/lpfc_sli.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 80c3c84c23914..c4acf594286e5 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -2921,6 +2921,8 @@ lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag); ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); + } else { + clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag); } /* The unreg_login mailbox is complete and had a -- 2.39.5