Linux-NVME Archive on lore.kernel.org
 help / color / Atom feed
From: Greg KH <gregkh@linuxfoundation.org>
To: Prike Liang <Prike.Liang@amd.com>
Cc: linux-nvme@lists.infradead.org, Chaitanya.Kulkarni@wdc.com,
	hch@infradead.org, stable@vger.kernel.org,
	Alexander.Deucher@amd.com,
	Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Subject: Re: [PATCH v4 2/2] nvme-pci: add AMD PCIe quirk for suspend/resume
Date: Thu, 15 Apr 2021 08:29:45 +0200
Message-ID: <YHfdWYY3QSjIM2lT@kroah.com> (raw)
In-Reply-To: <1618458725-17164-2-git-send-email-Prike.Liang@amd.com>

On Thu, Apr 15, 2021 at 11:52:05AM +0800, Prike Liang wrote:
> The NVME device pluged in some AMD PCIE root port will resume timeout
> from s2idle which caused by NVME power CFG lost in the SMU FW restore.
> This issue can be workaround by using PCIe power set with simple
> suspend/resume process path instead of APST. In the onwards ASIC will
> try do the NVME shutdown save and restore in the BIOS and still need
> PCIe power setting to resume from RTD3 for s2idle.
> 
> Update the nvme_acpi_storage_d3() _with previously added quirk.
> 
> Cc: <stable@vger.kernel.org> # 5.11+
> Signed-off-by: Prike Liang <Prike.Liang@amd.com>
> Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
> [ck: split patches for nvme and pcie]
> Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
> 
> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>

You don't sign off and review a patch.  And you do not put a blank line
between them, this should all be one chunk of text.



> ---
> Changes in v2:
> Fix the patch format and check chip root complex DID instead of PCIe RP
> to avoid the storage device plugged in internal PCIe RP by USB adaptor.
> 
> Changes in v3:
> According to Christoph Hellwig do NVME PCIe related identify opt better
> in PCIe quirk driver rather than in NVME module.
> 
> Changes in v4:
> Split the fix to PCIe and NVMe part and then call the pci_dev_put() put
> the device reference count and finally refine the commit info.
> ---
>  drivers/nvme/host/pci.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
> index 6bad4d4..ce9f42b 100644
> --- a/drivers/nvme/host/pci.c
> +++ b/drivers/nvme/host/pci.c
> @@ -2832,6 +2832,7 @@ static bool nvme_acpi_storage_d3(struct pci_dev *dev)
>  {
>  	struct acpi_device *adev;
>  	struct pci_dev *root;
> +	struct pci_dev *rdev;
>  	acpi_handle handle;
>  	acpi_status status;
>  	u8 val;
> @@ -2845,6 +2846,12 @@ static bool nvme_acpi_storage_d3(struct pci_dev *dev)
>  	if (!root)
>  		return false;
>  
> +	rdev = pci_get_domain_bus_and_slot(0, 0, PCI_DEVFN(0, 0));

Please look at the root bus for the specific device, do not assume that
you are only on this specific bus.

greg k-h

_______________________________________________
Linux-nvme mailing list
Linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme

  reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-15  3:52 [PATCH v4 1/2] PCI: add AMD PCIe quirk for nvme shutdown opt Prike Liang
2021-04-15  3:52 ` [PATCH v4 2/2] nvme-pci: add AMD PCIe quirk for suspend/resume Prike Liang
2021-04-15  6:29   ` Greg KH [this message]
2021-04-15  7:39     ` Liang, Prike
2021-04-15  8:20 ` [PATCH v4 1/2] PCI: add AMD PCIe quirk for nvme shutdown opt Christoph Hellwig
2021-04-15  9:41   ` Liang, Prike
2021-04-15 22:25     ` Keith Busch
2021-04-16  6:51       ` Liang, Prike
2021-04-30 17:50 ` Bjorn Helgaas
2021-05-03  7:14   ` Christoph Hellwig
2021-05-03 14:57     ` Keith Busch
2021-05-03 15:50       ` Bjorn Helgaas
2021-05-06  3:22         ` Liang, Prike

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=YHfdWYY3QSjIM2lT@kroah.com \
    --to=gregkh@linuxfoundation.org \
    --cc=Alexander.Deucher@amd.com \
    --cc=Chaitanya.Kulkarni@wdc.com \
    --cc=Prike.Liang@amd.com \
    --cc=Shyam-sundar.S-k@amd.com \
    --cc=hch@infradead.org \
    --cc=linux-nvme@lists.infradead.org \
    --cc=stable@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-NVME Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-nvme/0 linux-nvme/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-nvme linux-nvme/ https://lore.kernel.org/linux-nvme \
		linux-nvme@lists.infradead.org
	public-inbox-index linux-nvme

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.infradead.lists.linux-nvme


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git