From: Bjorn Helgaas <bhelgaas@google.com>
Date: Wed, 26 Feb 2014 18:26:00 +0000 (-0700)
Subject: PCI: Don't enable decoding if BAR hasn't been assigned an address
X-Git-Tag: v3.15-rc1~143^2^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3cedcc3621289d41bd21c5dbe0b886d57c83a1ea;p=pandora-kernel.git

PCI: Don't enable decoding if BAR hasn't been assigned an address

Don't enable memory or I/O decoding if we haven't assigned or claimed the
BAR's resource.

If we enable decoding for a BAR that hasn't been assigned an address, we'll
likely cause bus conflicts.  This declines to enable decoding for resources
with IORESOURCE_UNSET.

Note that drivers can use pci_enable_device_io() or pci_enable_device_mem()
if they only care about specific types of BARs.  In that case, we don't
bother checking whether the corresponding resources are assigned or
claimed.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---

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