https://bugzilla.kernel.org/show_bug.cgi?id=59501
Summary: Sony VAIO VPCZ23A4R: PCI bus is not rescanned on
docking/undocking (worked in 3.9)
Product: ACPI
Version: 2.5
Kernel Version: 3.10-rc4
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Config-Hotplug
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Regression: Yes
The following commit (identified by git bisect) introduced a regression on my
Sony VAIO VPCZ23A4R laptop:
commit 3b63aaa70e1ccc4b66d60acc78da09700706a703
Author: Jiang Liu <[email protected]>
Date: Fri Apr 12 05:44:26 2013 +0000
PCI: acpiphp: Do not use ACPI PCI subdriver mechanism
The regression manifests itself as follows: boot the laptop without the dock
station, then connect it, and the laptop does not see the PCI devices in the
dock station. Before that commit, it did, but only the CD-ROM connected to the
Marvell pata controller actually worked (see bug 56531).
A simple echo 1 > /sys/bus/pci/rescan is sufficient for the laptop to see the
devices on the bus. Interestingly, after this commit with manual PCI bus rescan
the CD-ROM started working (before that pata_marvell would only complain about
"no native port available").
I will attach dmesgs both from the working and non-working kernels. Acpidump
output is available from bug 55611.
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