From: Thomas Gleixner <tglx@xxxxxxxxxxxxx> 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@xxxxxxxxxxxxx> Cc: stable-rt@xxxxxxxxxxxxxxx Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx> --- 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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