linux-kernel - Re: [PATCH V2] nvme-pci: set cq_vector to -1 if io queue setup fails

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Message-ID: <20180226155829.GA10832@localhost.localdomain>
Date:   Mon, 26 Feb 2018 08:58:30 -0700
From:   Keith Busch <keith.busch@...el.com>
To:     Jianchao Wang <jianchao.w.wang@...cle.com>
Cc:     axboe@...com, hch@....de, sagi@...mberg.me,
        linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2] nvme-pci: set cq_vector to -1 if io queue setup fails

On Thu, Feb 15, 2018 at 07:13:41PM +0800, Jianchao Wang wrote:
> nvme cq irq is freed based on queue_count. When the sq/cq creation
> fails, irq will not be setup. free_irq will warn 'Try to free
> already-free irq'.
> 
> To fix it, set the nvmeq->cq_vector to -1, then nvme_suspend_queue
> will ignore it.

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