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From: Yi Zhang <yi.zhang@redhat.com>
To: Keith Busch <kbusch@kernel.org>
Cc: linux-nvme@lists.infradead.org
Subject: Re: [bug report] nvme removing after probe failed with pci rescan after nvme sysfs removal
Date: Sun, 26 Sep 2021 19:14:01 +0800	[thread overview]
Message-ID: <CAHj4cs9B4rNRhM2DEjtRWMSJXie2xUFToB7HQq4wd1TiXc-WWA@mail.gmail.com> (raw)
In-Reply-To: <20210924031315.GA14438@C02WT3WMHTD6>

On Fri, Sep 24, 2021 at 11:13 AM Keith Busch <kbusch@kernel.org> wrote:
>
> On Wed, Sep 22, 2021 at 09:56:47AM +0800, Yi Zhang wrote:
> > # echo 1 >/sys/bus/pci/devices/0000\:87\:00.0/remove
> > # echo 1 >/sys/bus/pci/rescan
> > # dmesg
> > [  251.864254] pci 0000:87:00.0: [144d:a808] type 00 class 0x010802
> > [  251.864286] pci 0000:87:00.0: reg 0x10: [mem 0xc8600000-0xc8603fff 64bit]
> > [  251.864337] pci 0000:87:00.0: reg 0x30: [mem 0xffff0000-0xffffffff pref]
> > [  251.889196] pci 0000:87:00.0: BAR 6: assigned [mem 0xc8600000-0xc860ffff pref]
> > [  251.889206] pci 0000:87:00.0: BAR 0: assigned [mem 0xc8610000-0xc8613fff 64bit]
> > [  251.889777] nvme nvme0: pci function 0000:87:00.0
> > [  251.889888] nvme nvme0: readl(dev->bar + NVME_REG_CSTS) == -1,
> > return - ENODEV
>
> An all 1's return almost certainly means the memory read request failed. The
> test your described usually means the target did not properly configure the
> memory range it was assigned. Is this directly attached to a root port?
>
Hi Keith
It was connected to the PCIe slot through a PCIe extender card, I
added the full dmesg here, not sure if it helps.

https://pastebin.com/QUP0Y4sT


--
Best Regards,
  Yi Zhang


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      reply	other threads:[~2021-09-26 11:14 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20210922020425uscas1p22ca979458bbbb94c243af890bdca04b6@uscas1p2.samsung.com>
2021-09-22  1:56 ` [bug report] nvme removing after probe failed with pci rescan after nvme sysfs removal Yi Zhang
2021-09-22  2:32   ` Chaitanya Kulkarni
2021-09-22 11:21     ` Yi Zhang
2021-09-23  6:52       ` Chaitanya Kulkarni
2021-09-22  2:33   ` Chaitanya Kulkarni
2021-09-23 16:54   ` Adam Manzanares
2021-09-24  2:33     ` Yi Zhang
2021-09-24 19:16       ` Adam Manzanares
2021-09-24  3:13   ` Keith Busch
2021-09-26 11:14     ` Yi Zhang [this message]

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