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From db0ea1693dee833faabe5a09d1c14a6eaa7e3205 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 1 Dec 2011 00:07:16 +0100
Subject: [PATCH 053/274] pci: Use __wake_up_all_locked
pci_unblock_user_cfg_access()
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
---
drivers/pci/access.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index 2a58164..8e6a88e 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -463,7 +463,7 @@ void pci_cfg_access_unlock(struct pci_dev *dev)
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);
--
1.7.10.4
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