linux-kernel - Re: [PATCH 1/1] net/mlx5: Convert PCI error values to generic errnos

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Message-ID: <20230816221538.GA301788@bhelgaas>
Date:   Wed, 16 Aug 2023 17:15:38 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Saeed Mahameed <saeedm@...dia.com>
Cc:     Saeed Mahameed <saeed@...nel.org>,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        linux-pci@...r.kernel.org, Leon Romanovsky <leon@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Moshe Shemesh <moshe@...lanox.com>, netdev@...r.kernel.org,
        linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] net/mlx5: Convert PCI error values to generic errnos

On Wed, Aug 16, 2023 at 03:12:02PM -0700, Saeed Mahameed wrote:
> On 16 Aug 17:04, Bjorn Helgaas wrote:
> > On Wed, Aug 16, 2023 at 02:45:15PM -0700, Saeed Mahameed wrote:
> > > On 14 Aug 17:32, Bjorn Helgaas wrote:
> > > > On Mon, Aug 14, 2023 at 04:27:20PM +0300, Ilpo Järvinen wrote:
> > > > > mlx5_pci_link_toggle() returns mix PCI specific error codes and generic
> > > > > errnos.
> > > > >
> > > > > Convert the PCI specific error values to generic errno using
> > > > > pcibios_err_to_errno() before returning them.
> > > > >
> > > > > Fixes: eabe8e5e88f5 ("net/mlx5: Handle sync reset now event")
> > > > > Fixes: 212b4d7251c1 ("net/mlx5: Wait for firmware to enable CRS before pci_restore_state")
> > > > > Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
> > > > >
> > > > > ---
> > > > >
> > > > > Maintainers beware, this will conflict with read+write -> set/clear_word
> > > > > fixes in pci.git/pcie-rmw. As such, it might be the easiest for Bjorn to
> > > > > take it instead of net people.
> > > >
> > > > I provisionally rebased and applied it on pci/pcie-rmw.  Take a look
> > > > and make sure I didn't botch it -- I also found a case in
> > > > mlx5_check_dev_ids() that looks like it needs the same conversion.
> > > >
> > > > The commit as applied is below.
> > > >
> > > > If networking folks would prefer to take this, let me know and I can
> > > > drop it.
> > > 
> > > I Just took this patch into my mlx5 submission queue and sent it to netdev
> > > tree, please drop it from your tree.
> > 
> > OK, will do.  Note that this will generate a conflict between netdev
> > and the PCI tree during the merge window.
> > 
> 
> In such case let me drop it and you submit it, I was worried it will
> conflict with another ongoing feature in mlx5, but I am almost sure it
> won't be ready this cycle, so no reason to panic, you can take the patch to
> the pci tree and I will revise my PR, it's not too late.

OK, I'll keep it, I think that will be easier all around.

Bjorn