From: Bjorn Helgaas <bhelgaas@google.com>
Date: Wed, 26 Feb 2014 18:25:59 +0000 (-0700)
Subject: PCI: Check IORESOURCE_UNSET before updating BAR
X-Git-Tag: v3.15-rc1~143^2^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cd8a4d3657c3f2cf9ce3780707be1debb8fea6e2;p=pandora-kernel.git

PCI: Check IORESOURCE_UNSET before updating BAR

Check to make sure we don't update a BAR with an address we haven't
assigned.

If we haven't assigned an address to a resource, we shouldn't write it to a
BAR.  This isn't a problem for the usual path via pci_assign_resource(),
which clears IORESOURCE_UNSET before calling pci_update_resource(), but
paths like pci_restore_bars() can call this for resources we haven't
assigned.

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

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