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-rw-r--r--fs/proc/proc_misc.c28
1 files changed, 24 insertions, 4 deletions
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index c3cbabe8b38..72dd739a7f8 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -645,15 +645,36 @@ static const struct file_operations proc_stat_operations = {
*/
static void *int_seq_start(struct seq_file *f, loff_t *pos)
{
+#ifdef CONFIG_HAVE_SPARSE_IRQ
+ struct irq_desc *desc;
+ int irq;
+ int count = *pos;
+
+ for_each_irq_desc(irq, desc) {
+ if (count-- == 0)
+ return desc;
+ }
+
+ return NULL;
+#else
return (*pos <= nr_irqs) ? pos : NULL;
+#endif
}
+
static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
{
+#ifdef CONFIG_HAVE_SPARSE_IRQ
+ struct irq_desc *desc;
+
+ desc = ((struct irq_desc *)v)->next;
(*pos)++;
- if (*pos > nr_irqs)
- return NULL;
- return pos;
+
+ return desc;
+#else
+ (*pos)++;
+ return (*pos <= nr_irqs) ? pos : NULL;
+#endif
}
static void int_seq_stop(struct seq_file *f, void *v)
@@ -661,7 +682,6 @@ static void int_seq_stop(struct seq_file *f, void *v)
/* Nothing to do */
}
-
static const struct seq_operations int_seq_ops = {
.start = int_seq_start,
.next = int_seq_next,