proc: enclose desc variable of show_stat() in CONFIG_SPARSE_IRQ

Impact: restructure code to fix compiler warning

commit 240d367b4e6c6e3c5075e034db14dba60a6f5fa7 moved desc usage point
into #ifdef CONFIG_SPARSE_IRQ.

Eliminate the desc variable, otherwise following warning happens:

 fs/proc/stat.c: In function 'show_stat':
 fs/proc/stat.c:31: warning: unused variable 'desc'

[ akpm: cleaned up the patch to remove #ifdef ]

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 5 deletions

diff --git a/fs/proc/stat.c b/fs/proc/stat.c
index 3cb9492801c0..3bb1cf1e7425 100644
--- a/fs/proc/stat.c
+++ b/fs/proc/stat.c
@@ -27,7 +27,6 @@ static int show_stat(struct seq_file *p, void *v)
         u64 sum = 0;
         struct timespec boottime;
         unsigned int per_irq_sum;
-        struct irq_desc *desc;
 
         user = nice = system = idle = iowait =
                 irq = softirq = steal = cputime64_zero;
@@ -47,8 +46,7 @@ static int show_stat(struct seq_file *p, void *v)
                 guest = cputime64_add(guest, kstat_cpu(i).cpustat.guest);
                 for_each_irq_nr(j) {
 #ifdef CONFIG_SPARSE_IRQ
-                        desc = irq_to_desc(j);
-                        if (!desc)
+                        if (!irq_to_desc(j))
                                 continue;
 #endif
                         sum += kstat_irqs_cpu(j, i);
@@ -98,8 +96,7 @@ static int show_stat(struct seq_file *p, void *v)
         for_each_irq_nr(j) {
                 per_irq_sum = 0;
 #ifdef CONFIG_SPARSE_IRQ
-                desc = irq_to_desc(j);
-                if (!desc) {
+                if (!irq_to_desc(j)) {
                         seq_printf(p, " %u", per_irq_sum);
                         continue;
                 }