Subject: [PATCH] powerpc/82xx: Convert pci_pic_lock to raw_spinlock

From: Anton Vorontsov <[email-masked]>
Date: Thu, 18 Feb 2010 16:57:38 +0300

Interrupt controllers' hooks are executed in the atomic context, so
they are not permitted to sleep (with RT kernels non-raw spinlocks are
sleepable). So, pci_pic_lock has to be a real (non-sleepable) spinlock.

Signed-off-by: Anton Vorontsov <[email-masked]>
---
 arch/powerpc/platforms/82xx/pq2ads-pci-pic.c |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/powerpc/platforms/82xx/pq2ads-pci-pic.c b/arch/powerpc/platforms/82xx/pq2ads-pci-pic.c
index 9d962d7..d4a09f8 100644
--- a/arch/powerpc/platforms/82xx/pq2ads-pci-pic.c
+++ b/arch/powerpc/platforms/82xx/pq2ads-pci-pic.c
@@ -24,7 +24,7 @@
 
 #include "pq2.h"
 
-static DEFINE_SPINLOCK(pci_pic_lock);
+static DEFINE_RAW_SPINLOCK(pci_pic_lock);
 
 struct pq2ads_pci_pic {
 	struct device_node *node;
@@ -45,12 +45,12 @@ static void pq2ads_pci_mask_irq(unsigned int virq)
 
 	if (irq != -1) {
 		unsigned long flags;
-		spin_lock_irqsave(&pci_pic_lock, flags);
+		raw_spin_lock_irqsave(&pci_pic_lock, flags);
 
 		setbits32(&priv->regs->mask, 1 << irq);
 		mb();
 
-		spin_unlock_irqrestore(&pci_pic_lock, flags);
+		raw_spin_unlock_irqrestore(&pci_pic_lock, flags);
 	}
 }
 
@@ -62,9 +62,9 @@ static void pq2ads_pci_unmask_irq(unsigned int virq)
 	if (irq != -1) {
 		unsigned long flags;
 
-		spin_lock_irqsave(&pci_pic_lock, flags);
+		raw_spin_lock_irqsave(&pci_pic_lock, flags);
 		clrbits32(&priv->regs->mask, 1 << irq);
-		spin_unlock_irqrestore(&pci_pic_lock, flags);
+		raw_spin_unlock_irqrestore(&pci_pic_lock, flags);
 	}
 }
 
-- 
1.6.5.7