From: Jiang Liu <liuj97@gmail.com>
Date: Fri, 12 Apr 2013 05:44:18 +0000 (+0000)
Subject: PCI: acpiphp: Remove all functions even if function 0 doesn't exist
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~143^2~3^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3a0e40beefc20852191ed65d53e1b82d95ac11b8;p=pandora-kernel.git

PCI: acpiphp: Remove all functions even if function 0 doesn't exist

Currently function disable_device() detects slot state by checking
existence of PCI function 0.  It's unreliable because the PCI device
for function 0 may be removed through the sysfs interface.  If that
happens, it will cause powering off a hotplug slot without destroying
all PCI devices.

On the other hand, it won't hurt us except wasting some computation
power if the check is removed, because all code of disable_device()
is self-protected.  So remove the check.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Yinghai Lu <yinghai@kernel.org>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Toshi Kani <toshi.kani@hp.com>
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