linux-kernel - Re: [PATCH 1/5] PCI/switchtec: Error out MRPC execution when no GAS access

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Date:   Sat, 2 Oct 2021 00:05:31 +0000
From:   <Kelvin.Cao@...rochip.com>
To:     <helgaas@...nel.org>, <logang@...tatee.com>
CC:     <kurt.schwemmer@...rosemi.com>, <bhelgaas@...gle.com>,
        <kelvincao@...look.com>, <linux-kernel@...r.kernel.org>,
        <linux-pci@...r.kernel.org>
Subject: Re: [PATCH 1/5] PCI/switchtec: Error out MRPC execution when no GAS
 access

On Fri, 2021-10-01 at 17:52 -0600, Logan Gunthorpe wrote:
> On 2021-10-01 4:58 p.m., Kelvin.Cao@...rochip.com wrote:
> > On Fri, 2021-10-01 at 15:18 -0500, Bjorn Helgaas wrote:
> > > Didn't notice this before, but the "check_access()" name is not
> > > very
> > > helpful because it doesn't give a clue about what the return
> > > value
> > > means.  Does 0 mean no error?  Does 1 mean no error?  From
> > > reading
> > > the
> > > implementation, I can see that 0 is actually the error case, but
> > > I
> > > can't tell from the name.
> > 
> > Yes, will improve the naming, like change it to "has_gas_access()"
> > in
> > v2 if a v2 patchset is preferred.
> 
> I'd keep the GAS name out of the kernel. How about something along
> the
> lines of is_firmware_running()? Maybe a comment for the function
> would
> be good as well.
> 
Yes, that'll be an improvement.
> Logan