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    SubjectRe: [PATCH 5.16 0873/1039] PCI: pciehp: Use down_read/write_nested(reset_lock) to fix lockdep errors
    On Tue, Jan 25, 2022 at 01:42:38PM +0100, Greg Kroah-Hartman wrote:
    > On Tue, Jan 25, 2022 at 06:23:23AM -0600, Bjorn Helgaas wrote:
    > > On Mon, Jan 24, 2022 at 07:44:22PM +0100, Greg Kroah-Hartman wrote:
    > > > From: Hans de Goede <hdegoede@redhat.com>
    > > >
    > > > commit 085a9f43433f30cbe8a1ade62d9d7827c3217f4d upstream.
    > >
    > > I would hold off on backporting the pciehp changes until we resolve
    > > this regression in v5.17-rc1:
    > >
    > > https://bugzilla.kernel.org/show_bug.cgi?id=215525
    >
    > Thanks, I will drop it from all queues now. If it gets resolved, please
    > email stable@vger and we will be glad to add it back, along with the
    > fix.

    This turned out not to be an actual regression. According to Bjorn,
    "it was arguably a bug that it *did* work before", see:

    https://lore.kernel.org/linux-pci/20220202164308.GA17822@bhelgaas/

    Also, the culprit was not pciehp, but rather a change to _OSC handling
    for VMD devices in commit 04b12ef163d1.

    Thus, please consider re-adding these upstream commits to the stable queues:

    085a9f43433f30cbe8a1ade62d9d7827c3217f4d (5.16, 5.15, 5.10)
    23584c1ed3e15a6f4bfab8dc5a88d94ab929ee12 (5.16, 5.15, 5.10, 5.4)

    The release numbers in parentheses are the ones you originally queued the
    commits up for.

    Thanks!

    Lukas

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