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Tue, 10 Dec 2024 05:41:50 +0000 Received: from smtpav04.fra02v.mail.ibm.com (smtpav04.fra02v.mail.ibm.com [10.20.54.103]) by smtprelay06.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 4BA5fmfE18088346 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 10 Dec 2024 05:41:48 GMT Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9CEDE20043; Tue, 10 Dec 2024 05:41:48 +0000 (GMT) Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2B3F620040; Tue, 10 Dec 2024 05:41:48 +0000 (GMT) Received: from ozlabs.au.ibm.com (unknown [9.63.197.14]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 10 Dec 2024 05:41:48 +0000 (GMT) Received: from jarvis.ozlabs.ibm.com.com (unknown [9.36.5.92]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.au.ibm.com (Postfix) with ESMTPSA id 5CC7760687; Tue, 10 Dec 2024 16:41:41 +1100 (AEDT) From: Andrew Donnellan To: linuxppc-dev@lists.ozlabs.org, linux-scsi@vger.kernel.org Cc: linux-kernel@vger.kernel.org, fbarrat@linux.ibm.com, ukrishn@linux.ibm.com, manoj@linux.ibm.com, clombard@linux.ibm.com, vaibhav@linux.ibm.com Subject: [PATCH 0/2] Deprecate cxl and cxlflash drivers Date: Tue, 10 Dec 2024 16:40:53 +1100 Message-ID: <20241210054055.144813-1-ajd@linux.ibm.com> X-Mailer: git-send-email 2.47.1 Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: rKu_YlGomn6n8q2dRNRVIjGEXP3dN9uA X-Proofpoint-ORIG-GUID: rKu_YlGomn6n8q2dRNRVIjGEXP3dN9uA X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-15_01,2024-10-11_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 spamscore=0 clxscore=1015 impostorscore=0 mlxscore=0 mlxlogscore=440 priorityscore=1501 malwarescore=0 adultscore=0 bulkscore=0 phishscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2412100039 This series marks the cxl and cxlflash drivers as obsolete/deprecated, disables them by default, and prints a warning to users on probe. CAPI devices have been out of production for some time, and we're not aware of any remaining users who are likely to want a modern kernel. There's almost certainly some remaining driver bugs and we don't have much hardware available to properly test the drivers any more. This was previously discussed at [0] - I've decided not to try to do anything funny with the Kconfig settings as explored in that thread, as it seems unlikely to have any significant benefit. This series will be followed up with patches to remove the drivers and associated arch code, which I hope will be merged in the following cycle. [0] https://patchwork.ozlabs.org/project/linuxppc-dev/patch/20240409031027.41587-2-ajd@linux.ibm.com/ Andrew Donnellan (2): cxl: Deprecate driver scsi/cxlflash: Deprecate driver Documentation/ABI/{testing => obsolete}/sysfs-class-cxl | 3 +++ MAINTAINERS | 4 ++-- drivers/misc/cxl/Kconfig | 6 ++++-- drivers/misc/cxl/of.c | 2 ++ drivers/misc/cxl/pci.c | 2 ++ drivers/scsi/cxlflash/Kconfig | 6 ++++-- drivers/scsi/cxlflash/main.c | 2 ++ 7 files changed, 19 insertions(+), 6 deletions(-) rename Documentation/ABI/{testing => obsolete}/sysfs-class-cxl (99%)