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

[Marek Behún]

On Sat, 27 Mar 2021 14:29:59 +0100
Pali Rohár <pali at kernel.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