linux-kernel - Re: [PATCH] powerpc/pseries: extract host bridge from pci

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Message-ID: <e36a28a8-12ff-5816-bf90-87fab97933ad@linux.ibm.com>
Date:   Tue, 13 Apr 2021 12:04:04 -0700
From:   Tyrel Datwyler <tyreld@...ux.ibm.com>
To:     mpe@...erman.id.au
Cc:     benh@...nel.crashing.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc/pseries: extract host bridge from pci_bus prior
 to bus removal

On 2/11/21 10:24 AM, Tyrel Datwyler wrote:
> The pci_bus->bridge reference may no longer be valid after
> pci_bus_remove() resulting in passing a bad value to device_unregister()
> for the associated bridge device.
> 
> Store the host_bridge reference in a separate variable prior to
> pci_bus_remove().
> 
> Fixes: 7340056567e3 ("powerpc/pci: Reorder pci bus/bridge unregistration during PHB removal")
> Signed-off-by: Tyrel Datwyler <tyreld@...ux.ibm.com>

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