From: Ralf Baechle <ralf@linux-mips.org>
Date: Sat, 27 Feb 2010 11:53:38 +0000 (+0100)
Subject: MIPS: i8259: Convert IRQ controller lock to raw spinlock.
X-Git-Tag: v2.6.34-rc1~269^2~19
X-Git-Url: http://bbs.cooldavid.org/git/?a=commitdiff_plain;h=896508705561bea24656680cdaf3b4095c4d7473;p=net-next-2.6.git

MIPS: i8259: Convert IRQ controller lock to raw spinlock.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

diff --git a/arch/mips/include/asm/i8259.h b/arch/mips/include/asm/i8259.h
index 8572a2d9048..c7e278447c0 100644
--- a/arch/mips/include/asm/i8259.h
+++ b/arch/mips/include/asm/i8259.h
@@ -35,7 +35,7 @@
 #define SLAVE_ICW4_DEFAULT	0x01
 #define PIC_ICW4_AEOI		2
 
-extern spinlock_t i8259A_lock;
+extern raw_spinlock_t i8259A_lock;
 
 extern int i8259A_irq_pending(unsigned int irq);
 extern void make_8259A_irq(unsigned int irq);
@@ -51,7 +51,7 @@ static inline int i8259_irq(void)
 {
 	int irq;
 
-	spin_lock(&i8259A_lock);
+	raw_spin_lock(&i8259A_lock);
 
 	/* Perform an interrupt acknowledge cycle on controller 1. */
 	outb(0x0C, PIC_MASTER_CMD);		/* prepare for poll */
@@ -78,7 +78,7 @@ static inline int i8259_irq(void)
 			irq = -1;
 	}
 
-	spin_unlock(&i8259A_lock);
+	raw_spin_unlock(&i8259A_lock);
 
 	return likely(irq >= 0) ? irq + I8259A_IRQ_BASE : irq;
 }
diff --git a/arch/mips/kernel/i8259.c b/arch/mips/kernel/i8259.c
index 01c0885a806..27799113332 100644
--- a/arch/mips/kernel/i8259.c
+++ b/arch/mips/kernel/i8259.c
@@ -29,7 +29,7 @@
  */
 
 static int i8259A_auto_eoi = -1;
-DEFINE_SPINLOCK(i8259A_lock);
+DEFINE_RAW_SPINLOCK(i8259A_lock);
 static void disable_8259A_irq(unsigned int irq);
 static void enable_8259A_irq(unsigned int irq);
 static void mask_and_ack_8259A(unsigned int irq);
@@ -65,13 +65,13 @@ static void disable_8259A_irq(unsigned int irq)
 
 	irq -= I8259A_IRQ_BASE;
 	mask = 1 << irq;
-	spin_lock_irqsave(&i8259A_lock, flags);
+	raw_spin_lock_irqsave(&i8259A_lock, flags);
 	cached_irq_mask |= mask;
 	if (irq & 8)
 		outb(cached_slave_mask, PIC_SLAVE_IMR);
 	else
 		outb(cached_master_mask, PIC_MASTER_IMR);
-	spin_unlock_irqrestore(&i8259A_lock, flags);
+	raw_spin_unlock_irqrestore(&i8259A_lock, flags);
 }
 
 static void enable_8259A_irq(unsigned int irq)
@@ -81,13 +81,13 @@ static void enable_8259A_irq(unsigned int irq)
 
 	irq -= I8259A_IRQ_BASE;
 	mask = ~(1 << irq);
-	spin_lock_irqsave(&i8259A_lock, flags);
+	raw_spin_lock_irqsave(&i8259A_lock, flags);
 	cached_irq_mask &= mask;
 	if (irq & 8)
 		outb(cached_slave_mask, PIC_SLAVE_IMR);
 	else
 		outb(cached_master_mask, PIC_MASTER_IMR);
-	spin_unlock_irqrestore(&i8259A_lock, flags);
+	raw_spin_unlock_irqrestore(&i8259A_lock, flags);
 }
 
 int i8259A_irq_pending(unsigned int irq)
@@ -98,12 +98,12 @@ int i8259A_irq_pending(unsigned int irq)
 
 	irq -= I8259A_IRQ_BASE;
 	mask = 1 << irq;
-	spin_lock_irqsave(&i8259A_lock, flags);
+	raw_spin_lock_irqsave(&i8259A_lock, flags);
 	if (irq < 8)
 		ret = inb(PIC_MASTER_CMD) & mask;
 	else
 		ret = inb(PIC_SLAVE_CMD) & (mask >> 8);
-	spin_unlock_irqrestore(&i8259A_lock, flags);
+	raw_spin_unlock_irqrestore(&i8259A_lock, flags);
 
 	return ret;
 }
@@ -151,7 +151,7 @@ static void mask_and_ack_8259A(unsigned int irq)
 
 	irq -= I8259A_IRQ_BASE;
 	irqmask = 1 << irq;
-	spin_lock_irqsave(&i8259A_lock, flags);
+	raw_spin_lock_irqsave(&i8259A_lock, flags);
 	/*
 	 * Lightweight spurious IRQ detection. We do not want
 	 * to overdo spurious IRQ handling - it's usually a sign
@@ -183,7 +183,7 @@ handle_real_irq:
 		outb(0x60+irq, PIC_MASTER_CMD);	/* 'Specific EOI to master */
 	}
 	smtc_im_ack_irq(irq);
-	spin_unlock_irqrestore(&i8259A_lock, flags);
+	raw_spin_unlock_irqrestore(&i8259A_lock, flags);
 	return;
 
 spurious_8259A_irq:
@@ -264,7 +264,7 @@ static void init_8259A(int auto_eoi)
 
 	i8259A_auto_eoi = auto_eoi;
 
-	spin_lock_irqsave(&i8259A_lock, flags);
+	raw_spin_lock_irqsave(&i8259A_lock, flags);
 
 	outb(0xff, PIC_MASTER_IMR);	/* mask all of 8259A-1 */
 	outb(0xff, PIC_SLAVE_IMR);	/* mask all of 8259A-2 */
@@ -298,7 +298,7 @@ static void init_8259A(int auto_eoi)
 	outb(cached_master_mask, PIC_MASTER_IMR); /* restore master IRQ mask */
 	outb(cached_slave_mask, PIC_SLAVE_IMR);	  /* restore slave IRQ mask */
 
-	spin_unlock_irqrestore(&i8259A_lock, flags);
+	raw_spin_unlock_irqrestore(&i8259A_lock, flags);
 }
 
 /*
diff --git a/arch/mips/loongson/lemote-2f/irq.c b/arch/mips/loongson/lemote-2f/irq.c
index 77d32f9cf31..882dfcd42c0 100644
--- a/arch/mips/loongson/lemote-2f/irq.c
+++ b/arch/mips/loongson/lemote-2f/irq.c
@@ -38,7 +38,7 @@ int mach_i8259_irq(void)
 	irq = -1;
 
 	if ((LOONGSON_INTISR & LOONGSON_INTEN) & LOONGSON_INT_BIT_INT0) {
-		spin_lock(&i8259A_lock);
+		raw_spin_lock(&i8259A_lock);
 		isr = inb(PIC_MASTER_CMD) &
 			~inb(PIC_MASTER_IMR) & ~(1 << PIC_CASCADE_IR);
 		if (!isr)
@@ -56,7 +56,7 @@ int mach_i8259_irq(void)
 			if (~inb(PIC_MASTER_ISR) & 0x80)
 				irq = -1;
 		}
-		spin_unlock(&i8259A_lock);
+		raw_spin_unlock(&i8259A_lock);
 	}
 
 	return irq;