From 0a1a9b49427f13b6e12366eb8f06b8094ab61447 Mon Sep 17 00:00:00 2001
From: Wei Yang <weiyang@linux.vnet.ibm.com>
Date: Tue, 30 Jun 2015 09:16:44 +0800
Subject: [PATCH] PCI: Simplify pci_find_(ext_)capability() return value checks

The return value of the pci_find_(ext_)capability() is either zero or the
position of a capability.  It is never negative.

This patch consolidates the form of check from (pos <= 0) to (!pos).

Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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