| From c774d52592c0d4c6bd64df8f32e8b0dc70467ff0 Mon Sep 17 00:00:00 2001 |
| From: Thomas Gleixner <tglx@linutronix.de> |
| Date: Thu, 1 Dec 2011 00:07:16 +0100 |
| Subject: [PATCH 053/270] 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 |
| |
