linux-kernel - Re: [RFC PATCH 09/35] nvme-pci: Change PCIBIOS

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Message-ID: <0762f646-90a1-217c-4e4b-6168d85bb08a@intel.com>
Date:   Mon, 13 Jul 2020 10:42:51 -0600
From:   "Rajashekar, Revanth" <revanth.rajashekar@...el.com>
To:     "Saheed O. Bolarinwa" <refactormyself@...il.com>,
        helgaas@...nel.org, Keith Busch <kbusch@...nel.org>,
        Jens Axboe <axboe@...com>, Christoph Hellwig <hch@....de>,
        Sagi Grimberg <sagi@...mberg.me>
Cc:     skhan@...uxfoundation.org, linux-kernel@...r.kernel.org,
        linux-nvme@...ts.infradead.org, linux-pci@...r.kernel.org,
        bjorn@...gaas.com, linux-kernel-mentees@...ts.linuxfoundation.org
Subject: Re: [RFC PATCH 09/35] nvme-pci: Change PCIBIOS_SUCCESSFUL to 0

Hi,

On 7/13/2020 6:22 AM, Saheed O. Bolarinwa wrote:
> In reference to the PCI spec (Chapter 2), PCIBIOS* is an x86 concept.
> Their scope should be limited within arch/x86.
>
> Change all PCIBIOS_SUCCESSFUL to 0
>
> Signed-off-by: "Saheed O. Bolarinwa" <refactormyself@...il.com>
> ---
>  drivers/nvme/host/pci.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
> index b1d18f0633c7..d426efb53f44 100644
> --- a/drivers/nvme/host/pci.c
> +++ b/drivers/nvme/host/pci.c
> @@ -1185,7 +1185,7 @@ static void nvme_warn_reset(struct nvme_dev *dev, u32 csts)
>  
>  	result = pci_read_config_word(to_pci_dev(dev->dev), PCI_STATUS,
>  				      &pci_status);
> -	if (result == PCIBIOS_SUCCESSFUL)
> +	if (result == 0)
How about simplifying the check to if (!result)?
>  		dev_warn(dev->ctrl.device,
>  			 "controller is down; will reset: CSTS=0x%x, PCI_STATUS=0x%hx\n",
>  			 csts, pci_status);
Thanks!
Revanth