3 files changed, 29 insertions, 31 deletions

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index ae70e93b29b5..ba566c261adc 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -166,7 +166,7 @@ int set_irq_data(unsigned int irq, void *data)
 EXPORT_SYMBOL(set_irq_data);
 
 /**
- *	set_irq_msi - set irq type data for an irq
+ *	set_irq_msi - set MSI descriptor data for an irq
  *	@irq:	Interrupt number
  *	@entry:	Pointer to MSI descriptor data
  *
@@ -590,7 +590,7 @@ out_unlock:
 }
 
 /**
- *	handle_percpu_IRQ - Per CPU local irq handler
+ *	handle_percpu_irq - Per CPU local irq handler
  *	@irq:	the interrupt number
  *	@desc:	the interrupt description structure for this irq
  *
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index 692363dd591f..0832145fea97 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -136,7 +136,7 @@ out:
 
 static int default_affinity_open(struct inode *inode, struct file *file)
 {
-	return single_open(file, default_affinity_show, NULL);
+	return single_open(file, default_affinity_show, PDE(inode)->data);
 }
 
 static const struct file_operations default_affinity_proc_fops = {
@@ -148,18 +148,28 @@ static const struct file_operations default_affinity_proc_fops = {
 };
 #endif
 
-static int irq_spurious_read(char *page, char **start, off_t off,
-				  int count, int *eof, void *data)
+static int irq_spurious_proc_show(struct seq_file *m, void *v)
 {
-	struct irq_desc *desc = irq_to_desc((long) data);
-	return sprintf(page, "count %u\n"
-			     "unhandled %u\n"
-			     "last_unhandled %u ms\n",
-			desc->irq_count,
-			desc->irqs_unhandled,
-			jiffies_to_msecs(desc->last_unhandled));
+	struct irq_desc *desc = irq_to_desc((long) m->private);
+
+	seq_printf(m, "count %u\n" "unhandled %u\n" "last_unhandled %u ms\n",
+		   desc->irq_count, desc->irqs_unhandled,
+		   jiffies_to_msecs(desc->last_unhandled));
+	return 0;
+}
+
+static int irq_spurious_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, irq_spurious_proc_show, NULL);
 }
 
+static const struct file_operations irq_spurious_proc_fops = {
+	.open		= irq_spurious_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 #define MAX_NAMELEN 128
 
 static int name_unique(unsigned int irq, struct irqaction *new_action)
@@ -204,7 +214,6 @@ void register_handler_proc(unsigned int irq, struct irqaction *action)
 void register_irq_proc(unsigned int irq, struct irq_desc *desc)
 {
 	char name [MAX_NAMELEN];
-	struct proc_dir_entry *entry;
 
 	if (!root_irq_dir || (desc->chip == &no_irq_chip) || desc->dir)
 		return;
@@ -214,6 +223,8 @@ void register_irq_proc(unsigned int irq, struct irq_desc *desc)
 
 	/* create /proc/irq/1234 */
 	desc->dir = proc_mkdir(name, root_irq_dir);
+	if (!desc->dir)
+		return;
 
 #ifdef CONFIG_SMP
 	/* create /proc/irq/<irq>/smp_affinity */
@@ -221,11 +232,8 @@ void register_irq_proc(unsigned int irq, struct irq_desc *desc)
 			 &irq_affinity_proc_fops, (void *)(long)irq);
 #endif
 
-	entry = create_proc_entry("spurious", 0444, desc->dir);
-	if (entry) {
-		entry->data = (void *)(long)irq;
-		entry->read_proc = irq_spurious_read;
-	}
+	proc_create_data("spurious", 0444, desc->dir,
+			 &irq_spurious_proc_fops, (void *)(long)irq);
 }
 
 #undef MAX_NAMELEN
diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c
index abd4fb77f8ce..e49ea1c5232d 100644
--- a/kernel/irq/spurious.c
+++ b/kernel/irq/spurious.c
@@ -104,7 +104,7 @@ static int misrouted_irq(int irq)
 	return ok;
 }
 
-static void poll_all_shared_irqs(void)
+static void poll_spurious_irqs(unsigned long dummy)
 {
 	struct irq_desc *desc;
 	int i;
@@ -121,25 +121,15 @@ static void poll_all_shared_irqs(void)
 		if (!(status & IRQ_SPURIOUS_DISABLED))
 			continue;
 
+		local_irq_disable();
 		try_one_irq(i, desc);
+		local_irq_enable();
 	}
-}
-
-static void poll_spurious_irqs(unsigned long dummy)
-{
-	poll_all_shared_irqs();
 
 	mod_timer(&poll_spurious_irq_timer,
 		  jiffies + POLL_SPURIOUS_IRQ_INTERVAL);
 }
 
-#ifdef CONFIG_DEBUG_SHIRQ
-void debug_poll_all_shared_irqs(void)
-{
-	poll_all_shared_irqs();
-}
-#endif
-
 /*
  * If 99,900 of the previous 100,000 interrupts have not been handled
  * then assume that the IRQ is stuck in some manner. Drop a diagnostic