linux-kernel - Re: [PATCH V1] PCI: dwc: Use dev_info for PCIe link down event logging

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 26 Oct 2022 14:33:31 +0200
From:   Lorenzo Pieralisi <lpieralisi@...nel.org>
To:     Jon Hunter <jonathanh@...dia.com>
Cc:     Bjorn Helgaas <helgaas@...nel.org>,
        Vidya Sagar <vidyas@...dia.com>, jingoohan1@...il.com,
        gustavo.pimentel@...opsys.com, robh@...nel.org, kw@...ux.com,
        bhelgaas@...gle.com, treding@...dia.com, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org, kthota@...dia.com,
        mmaddireddy@...dia.com, sagar.tv@...il.com,
        "linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH V1] PCI: dwc: Use dev_info for PCIe link down event
 logging

On Wed, Oct 26, 2022 at 12:39:13PM +0100, Jon Hunter wrote:
> Hi Lorenzo,
> 
> On 18/10/2022 17:43, Bjorn Helgaas wrote:
> > On Tue, Oct 18, 2022 at 07:21:54AM +0100, Jon Hunter wrote:
> > > Hi Bjorn,
> > > 
> > > On 13/09/2022 11:12, Vidya Sagar wrote:
> > > > Some of the platforms (like Tegra194 and Tegra234) have open slots and
> > > > not having an endpoint connected to the slot is not an error.
> > > > So, changing the macro from dev_err to dev_info to log the event.
> > > > 
> > > > Signed-off-by: Vidya Sagar <vidyas@...dia.com>
> > > > ---
> > > >    drivers/pci/controller/dwc/pcie-designware.c | 2 +-
> > > >    1 file changed, 1 insertion(+), 1 deletion(-)
> > > > 
> > > > diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
> > > > index 650a7f22f9d0..25154555aa7a 100644
> > > > --- a/drivers/pci/controller/dwc/pcie-designware.c
> > > > +++ b/drivers/pci/controller/dwc/pcie-designware.c
> > > > @@ -456,7 +456,7 @@ int dw_pcie_wait_for_link(struct dw_pcie *pci)
> > > >    	}
> > > >    	if (retries >= LINK_WAIT_MAX_RETRIES) {
> > > > -		dev_err(pci->dev, "Phy link never came up\n");
> > > > +		dev_info(pci->dev, "Phy link never came up\n");
> > > >    		return -ETIMEDOUT;
> > > >    	}
> > > 
> > > 
> > > Are you OK to take this change?
> > 
> > When this came up, Lorenzo was in the middle of a big move and I was
> > covering for him while he was unavailable.  But he's back, and I'm
> > sure he will resolve this soon.
> > 
> > Personally I'm OK either way.
> > 
> > Bjorn
> 
> 
> Can we come to a conclusion on this?
> 
> We have tests that fail when errors/warning messages are reported. We can
> choose to ignore these errors, but given that this is not an error in this
> case, we were thinking it is better to make it informational.

I understood.

We are at v6.1-rc2, this patch is not a fix, we will handle it for the
v6.2 merge window.

Thanks,
Lorenzo