This is a note to let you know that I've just added the patch titled
powerpc/pci: Reorder pci bus/bridge unregistration during PHB removal
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-pci-reorder-pci-bus-bridge-unregistration-during-phb-removal.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 7340056567e32b2c9d3554eb146e1977c93da116 Mon Sep 17 00:00:00 2001
From: Tyrel Datwyler <[email protected]>
Date: Tue, 29 Jul 2014 13:48:13 -0400
Subject: powerpc/pci: Reorder pci bus/bridge unregistration during PHB removal
From: Tyrel Datwyler <[email protected]>
commit 7340056567e32b2c9d3554eb146e1977c93da116 upstream.
Commit bcdde7e made __sysfs_remove_dir() recursive and introduced a BUG_ON
during PHB removal while attempting to delete the power managment attribute
group of the bus. This is a result of tearing the bridge and bus devices down
out of order in remove_phb_dynamic. Since, the the bus resides below the bridge
in the sysfs device tree it should be torn down first.
This patch simply moves the device_unregister call for the PHB bridge device
after the device_unregister call for the PHB bus.
Fixes: bcdde7e221a8 ("sysfs: make __sysfs_remove_dir() recursive")
Signed-off-by: Tyrel Datwyler <[email protected]>
Signed-off-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
arch/powerpc/platforms/pseries/pci_dlpar.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/powerpc/platforms/pseries/pci_dlpar.c
+++ b/arch/powerpc/platforms/pseries/pci_dlpar.c
@@ -118,10 +118,10 @@ int remove_phb_dynamic(struct pci_contro
}
}
- /* Unregister the bridge device from sysfs and remove the PCI bus */
- device_unregister(b->bridge);
+ /* Remove the PCI bus and unregister the bridge device from sysfs */
phb->bus = NULL;
pci_remove_bus(b);
+ device_unregister(b->bridge);
/* Now release the IO resource */
if (res->flags & IORESOURCE_IO)
Patches currently in stable-queue which might be from [email protected]
are
queue-3.14/powerpc-pci-reorder-pci-bus-bridge-unregistration-during-phb-removal.patch
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