Subject: pci: Use __wake_up_all_locked pci_unblock_user_cfg_access() From: Thomas Gleixner Date: Thu, 01 Dec 2011 00:07:16 +0100 Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.0-rt2.tar.xz 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 Cc: stable-rt@vger.kernel.org --- drivers/pci/access.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/pci/access.c +++ b/drivers/pci/access.c @@ -465,7 +465,7 @@ void pci_cfg_access_unlock(struct pci_de WARN_ON(!dev->block_cfg_access); dev->block_cfg_access = 0; - wake_up_all(&pci_cfg_wait); + wake_up_all_locked(&pci_cfg_wait); raw_spin_unlock_irqrestore(&pci_lock, flags); } EXPORT_SYMBOL_GPL(pci_cfg_access_unlock);