From: Christoph Hellwig <hch@lst.de>
To: sagi@grimberg.me, kbusch@kernel.org
Cc: linux-nvme@lists.infradead.org, Peng Liu <liupeng17@lenovo.com>
Subject: Re: [PATCH] nvme: do not try to reconfigure APST when the controller is not live
Date: Mon, 19 Apr 2021 09:09:31 +0200 [thread overview]
Message-ID: <20210419070931.GA19563@lst.de> (raw)
In-Reply-To: <20210409094905.1920747-1-hch@lst.de>
ping?
On Fri, Apr 09, 2021 at 11:49:05AM +0200, Christoph Hellwig wrote:
> Do not call nvme_configure_apst when the controller is not live, given
> that nvme_configure_apst will fail due the lack of an admin queue when
> the controller is being torn down and nvme_set_latency_tolerance is
> called from dev_pm_qos_hide_latency_tolerance.
>
> Fixes: 510a405d945b("nvme: fix memory leak for power latency tolerance")
> Reported-by: Peng Liu <liupeng17@lenovo.com>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
> drivers/nvme/host/core.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
> index 63a1e6cc27acab..f3c7b1cb2c7c8c 100644
> --- a/drivers/nvme/host/core.c
> +++ b/drivers/nvme/host/core.c
> @@ -2740,7 +2740,8 @@ static void nvme_set_latency_tolerance(struct device *dev, s32 val)
>
> if (ctrl->ps_max_latency_us != latency) {
> ctrl->ps_max_latency_us = latency;
> - nvme_configure_apst(ctrl);
> + if (ctrl->state == NVME_CTRL_LIVE)
> + nvme_configure_apst(ctrl);
> }
> }
>
> --
> 2.30.1
>
>
> _______________________________________________
> Linux-nvme mailing list
> Linux-nvme@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-nvme
---end quoted text---
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next prev parent reply other threads:[~2021-04-19 7:09 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-09 9:49 [PATCH] nvme: do not try to reconfigure APST when the controller is not live Christoph Hellwig
2021-04-19 7:09 ` Christoph Hellwig [this message]
2021-04-19 15:16 ` Keith Busch
2021-05-01 11:36 ` Hannes Reinecke
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