ipmi: use ARRAY_SIZE for poweroff_functions array sizing calculation

Use the ARRAY_SIZE macro on a array poweroff_functions to determine
size of the array. Improvement suggested by Coccinelle.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/char/ipmi/ipmi_poweroff.c b/drivers/char/ipmi/ipmi_poweroff.c
index 07fa366bc8f0..fccb1e9fd3b7 100644
--- a/drivers/char/ipmi/ipmi_poweroff.c
+++ b/drivers/char/ipmi/ipmi_poweroff.c
@@ -519,8 +519,7 @@ static struct poweroff_function poweroff_functions[] = {
           .detect               = ipmi_chassis_detect,
           .poweroff_func        = ipmi_poweroff_chassis },
 };
-#define NUM_PO_FUNCS (sizeof(poweroff_functions) \
-                      / sizeof(struct poweroff_function))
+#define NUM_PO_FUNCS ARRAY_SIZE(poweroff_functions)
 
 
 /* Called on a powerdown request. */