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    Subject[PATCH 07/11] pci: Use __wake_up_all_locked pci_unblock_user_cfg_access()
    From: Thomas Gleixner <tglx@linutronix.de>

    The waitqueue is protected by the pci_lock, so we can just avoid to
    lock the waitqueue lock itself. That prevents the
    might_sleep()/scheduling while atomic problem on RT

    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Cc: stable-rt@vger.kernel.org
    Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
    ---
    drivers/pci/access.c | 2 +-
    1 files changed, 1 insertions(+), 1 deletions(-)

    diff --git a/drivers/pci/access.c b/drivers/pci/access.c
    index fdaa42a..1a6cc67 100644
    --- a/drivers/pci/access.c
    +++ b/drivers/pci/access.c
    @@ -441,7 +441,7 @@ void pci_unblock_user_cfg_access(struct pci_dev *dev)
    WARN_ON(!dev->block_ucfg_access);

    dev->block_ucfg_access = 0;
    - wake_up_all(&pci_ucfg_wait);
    + wake_up_all_locked(&pci_ucfg_wait);
    raw_spin_unlock_irqrestore(&pci_lock, flags);
    }
    EXPORT_SYMBOL_GPL(pci_unblock_user_cfg_access);
    --
    1.7.7.1

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