linux-kernel - Re: [PATCH] PCI: Disallow retraining link for Atheros QCA98xx chips on non-Gen1 PCIe bridges

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Date:   Sat, 27 Mar 2021 18:33:27 +0100
From:   Pali Rohár <pali@...nel.org>
To:     Marek Behún <marek.behun@....cz>
Cc:     Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        Toke Høiland-Jørgensen <toke@...hat.com>,
        Marek Behún <kabel@...nel.org>,
        vtolkm@...il.com, Rob Herring <robh@...nel.org>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        linux-pci@...r.kernel.org, ath10k@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PCI: Disallow retraining link for Atheros QCA98xx chips
 on non-Gen1 PCIe bridges

On Saturday 27 March 2021 15:42:13 Marek Behún wrote:
> On Sat, 27 Mar 2021 14:29:59 +0100
> Pali Rohár <pali@...nel.org> wrote:
> 
> > I can change this to 'if (!ret)' if needed, no problem.
> > 
> > I use 'if (!val)' mostly for boolean and pointer variables. If
> > variable can contain more integer values then I lot of times I use
> > '=='.
> 
> Comparing integer varibales with explicit literals is sensible, but
> if a function returning integer returns 0 on success and negative value
> on error, Linux kernel has a tradition of using just
>   if (!ret)
> or 
>   if (ret)
> 
> Marek

Ok, I will change it.