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Thorsten Leemhuis 720639ef01 nvme-pci: avoid the deepest sleep state on Kingston A2000 SSDs ... commit 538e4a8c57 upstream. Some Kingston A2000 NVMe SSDs sooner or later get confused and stop working when they use the deepest APST sleep while running Linux. The system then crashes and one has to cold boot it to get the SSD working again. Kingston seems to known about this since at least mid-September 2020: https://bbs.archlinux.org/viewtopic.php?pid=1926994#p1926994 Someone working for a German company representing Kingston to the German press confirmed to me Kingston engineering is aware of the issue and investigating; the person stated that to their current knowledge only the deepest APST sleep state causes trouble. Therefore, make Linux avoid it for now by applying the NVME_QUIRK_NO_DEEPEST_PS to this SSD. I have two such SSDs, but it seems the problem doesn't occur with them. I hence couldn't verify if this patch really fixes the problem, but all the data in front of me suggests it should. This patch can easily be reverted or improved upon if a better solution surfaces. FWIW, there are many reports about the issue scattered around the web; most of the users disabled APST completely to make things work, some just made Linux avoid the deepest sleep state: https://bugzilla.kernel.org/show_bug.cgi?id=195039#c65 https://bugzilla.kernel.org/show_bug.cgi?id=195039#c73 https://bugzilla.kernel.org/show_bug.cgi?id=195039#c74 https://bugzilla.kernel.org/show_bug.cgi?id=195039#c78 https://bugzilla.kernel.org/show_bug.cgi?id=195039#c79 https://bugzilla.kernel.org/show_bug.cgi?id=195039#c80 https://askubuntu.com/questions/1222049/nvmekingston-a2000-sometimes-stops-giving-response-in-ubuntu-18-04dell-inspir https://community.acer.com/en/discussion/604326/m-2-nvme-ssd-aspire-517-51g-issue-compatibility-kingston-a2000-linux-ubuntu For the record, some data from 'nvme id-ctrl /dev/nvme0' NVME Identify Controller: vid : 0x2646 ssvid : 0x2646 mn : KINGSTON SA2000M81000G fr : S5Z42105 [...] ps 0 : mp:9.00W operational enlat:0 exlat:0 rrt:0 rrl:0 rwt:0 rwl:0 idle_power:- active_power:- ps 1 : mp:4.60W operational enlat:0 exlat:0 rrt:1 rrl:1 rwt:1 rwl:1 idle_power:- active_power:- ps 2 : mp:3.80W operational enlat:0 exlat:0 rrt:2 rrl:2 rwt:2 rwl:2 idle_power:- active_power:- ps 3 : mp:0.0450W non-operational enlat:2000 exlat:2000 rrt:3 rrl:3 rwt:3 rwl:3 idle_power:- active_power:- ps 4 : mp:0.0040W non-operational enlat:15000 exlat:15000 rrt:4 rrl:4 rwt:4 rwl:4 idle_power:- active_power:- Cc: stable@vger.kernel.org # 4.14+ Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2021-02-10 09:29:19 +01:00
..
core.c	nvme: check the PRINFO bit before deciding the host buffer length	2021-02-07 15:37:15 +01:00
fabrics.c	nvme-fabrics: allow to queue requests for live queues	2020-09-09 08:00:50 +02:00
fabrics.h	nvme: fix deadlock in disconnect during scan_work and/or ana_work	2020-07-29 07:45:19 +02:00
fault_inject.c	nvme: enable to inject errors into admin commands	2019-06-21 11:15:50 +02:00
fc.c	nvme-fc: avoid calling _nvme_fc_abort_outstanding_ios from interrupt context	2021-01-19 18:27:28 +01:00
fc.h	nvme-fc: Update header and host for common definitions for LS handling	2020-05-09 16:18:33 -06:00
hwmon.c	nvme: return errors for hwmon init	2020-09-22 17:49:55 +02:00
Kconfig	nvme-tcp: fix kconfig dependency warning when !CRYPTO	2020-09-15 07:58:49 +02:00
lightnvm.c	nvme: support for multiple Command Sets Supported and Effects log pages	2020-07-08 16:16:20 +02:00
Makefile	nvme: support for zoned namespaces	2020-07-08 16:16:20 +02:00
multipath.c	nvme-multipath: Early exit if no path is available	2021-02-03 23:28:50 +01:00
nvme.h	nvme: directly cache command effects log	2020-11-14 09:57:55 +01:00
pci.c	nvme-pci: avoid the deepest sleep state on Kingston A2000 SSDs	2021-02-10 09:29:19 +01:00
rdma.c	nvme-rdma: avoid request double completion for concurrent nvme_rdma_timeout	2021-02-07 15:37:15 +01:00
tcp.c	nvme-tcp: avoid request double completion for concurrent nvme_tcp_timeout	2021-02-07 15:37:16 +01:00
trace.c	nvme: trace: parse Get LBA Status command in detail	2019-08-29 12:55:01 -07:00
trace.h	nvme-trace: print result and status in hex format	2019-06-21 11:12:37 +02:00
zns.c	nvme: remove the disk argument to nvme_update_zone_info	2020-10-07 07:56:17 +02:00