30 lines
1.0 KiB
Diff
30 lines
1.0 KiB
Diff
From 11de9bd7c22e7d7fb712dc7d32831a9f65a18670 Mon Sep 17 00:00:00 2001
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From: Thomas Gleixner <tglx@linutronix.de>
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Date: Thu, 1 Dec 2011 00:07:16 +0100
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Subject: [PATCH 070/286] pci: Use __wake_up_all_locked
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pci_unblock_user_cfg_access()
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The waitqueue is protected by the pci_lock, so we can just avoid to
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lock the waitqueue lock itself. That prevents the
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might_sleep()/scheduling while atomic problem on RT
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Cc: stable-rt@vger.kernel.org
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---
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drivers/pci/access.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/drivers/pci/access.c b/drivers/pci/access.c
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index fdaa42a..1a6cc67 100644
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--- a/drivers/pci/access.c
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+++ b/drivers/pci/access.c
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@@ -441,7 +441,7 @@ void pci_unblock_user_cfg_access(struct pci_dev *dev)
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WARN_ON(!dev->block_ucfg_access);
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dev->block_ucfg_access = 0;
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- wake_up_all(&pci_ucfg_wait);
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+ wake_up_all_locked(&pci_ucfg_wait);
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raw_spin_unlock_irqrestore(&pci_lock, flags);
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}
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EXPORT_SYMBOL_GPL(pci_unblock_user_cfg_access);
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