From: Hector Martin <marcan@marcan.st> To: Keith Busch <kbusch@kernel.org>, Jens Axboe <axboe@fb.com>, Christoph Hellwig <hch@lst.de>, Sagi Grimberg <sagi@grimberg.me> Cc: Eric Curtin <ecurtin@redhat.com>, Janne Grunau <j@jannau.net>, Sven Peter <sven@svenpeter.dev>, Alyssa Rosenzweig <alyssa@rosenzweig.io>, asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, Hector Martin <marcan@marcan.st> Subject: [PATCH 0/2] nvme-apple: Fix suspend-resume regression Date: Wed, 11 Jan 2023 13:36:12 +0900 [thread overview] Message-ID: <20230111043614.27087-1-marcan@marcan.st> (raw) Commit c76b8308e4c9 introduced a behavior change in the way nvme-apple disables controllers, avoiding a disable in the shutdown path. Unfortunately, the NVMe core does not know how to actually start up controllers in the shutdown state, and this broke suspend/resume since we use the shutdown command for device suspend in nvme-apple. Additionally, nvme-apple was also checking only for the disable state in the reset path to decide whether to disable the controller again, and just having the controller shut down was triggering an unnecessary code path that broke things further. This short series fixes those issues and makes suspend/resume work on nvme-apple again. nvme-pci is, to my knowledge, not affected since it only issues a shutdown when the whole system is actually shutting down, never to come back. Hector Martin (2): nvme-apple: Do not try to shut down the controller twice nvme: Handle shut down controllers during initialization drivers/nvme/host/apple.c | 3 ++- drivers/nvme/host/core.c | 13 +++++++++++++ 2 files changed, 15 insertions(+), 1 deletion(-) -- 2.35.1
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From: Hector Martin <marcan@marcan.st> To: Keith Busch <kbusch@kernel.org>, Jens Axboe <axboe@fb.com>, Christoph Hellwig <hch@lst.de>, Sagi Grimberg <sagi@grimberg.me> Cc: Eric Curtin <ecurtin@redhat.com>, Janne Grunau <j@jannau.net>, Sven Peter <sven@svenpeter.dev>, Alyssa Rosenzweig <alyssa@rosenzweig.io>, asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, Hector Martin <marcan@marcan.st> Subject: [PATCH 0/2] nvme-apple: Fix suspend-resume regression Date: Wed, 11 Jan 2023 13:36:12 +0900 [thread overview] Message-ID: <20230111043614.27087-1-marcan@marcan.st> (raw) Commit c76b8308e4c9 introduced a behavior change in the way nvme-apple disables controllers, avoiding a disable in the shutdown path. Unfortunately, the NVMe core does not know how to actually start up controllers in the shutdown state, and this broke suspend/resume since we use the shutdown command for device suspend in nvme-apple. Additionally, nvme-apple was also checking only for the disable state in the reset path to decide whether to disable the controller again, and just having the controller shut down was triggering an unnecessary code path that broke things further. This short series fixes those issues and makes suspend/resume work on nvme-apple again. nvme-pci is, to my knowledge, not affected since it only issues a shutdown when the whole system is actually shutting down, never to come back. Hector Martin (2): nvme-apple: Do not try to shut down the controller twice nvme: Handle shut down controllers during initialization drivers/nvme/host/apple.c | 3 ++- drivers/nvme/host/core.c | 13 +++++++++++++ 2 files changed, 15 insertions(+), 1 deletion(-) -- 2.35.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2023-01-11 4:38 UTC|newest] Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-01-11 4:36 Hector Martin [this message] 2023-01-11 4:36 ` [PATCH 0/2] nvme-apple: Fix suspend-resume regression Hector Martin 2023-01-11 4:36 ` [PATCH 1/2] nvme-apple: Do not try to shut down the controller twice Hector Martin 2023-01-11 4:36 ` Hector Martin 2023-01-11 4:54 ` Christoph Hellwig 2023-01-11 4:54 ` Christoph Hellwig 2023-01-11 5:10 ` Hector Martin 2023-01-11 5:10 ` Hector Martin 2023-01-11 5:18 ` Christoph Hellwig 2023-01-11 5:18 ` Christoph Hellwig 2023-01-11 5:44 ` Hector Martin 2023-01-11 5:44 ` Hector Martin 2023-01-11 6:41 ` Christoph Hellwig 2023-01-11 6:41 ` Christoph Hellwig 2023-01-11 4:36 ` [PATCH 2/2] nvme: Handle shut down controllers during initialization Hector Martin 2023-01-11 4:36 ` Hector Martin 2023-01-11 4:50 ` Christoph Hellwig 2023-01-11 4:50 ` Christoph Hellwig
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