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-rw-r--r--kernel/irq/chip.c4
-rw-r--r--kernel/irq/proc.c40
-rw-r--r--kernel/irq/spurious.c16
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