libata: use __ratelimit

Use __ratelimit() instead of its own private rate limit implementation.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 3 insertions, 16 deletions

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 134b5df80ace..86f405b4831c 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -65,6 +65,7 @@
 #include <linux/libata.h>
 #include <asm/byteorder.h>
 #include <linux/cdrom.h>
+#include <linux/ratelimit.h>
 
 #include "libata.h"
 
@@ -6706,25 +6707,11 @@ static void __exit ata_exit(void)
 subsys_initcall(ata_init);
 module_exit(ata_exit);
 
-static unsigned long ratelimit_time;
-static DEFINE_SPINLOCK(ata_ratelimit_lock);
+static DEFINE_RATELIMIT_STATE(ratelimit, HZ / 5, 1);
 
 int ata_ratelimit(void)
 {
-        int rc;
-        unsigned long flags;
-
-        spin_lock_irqsave(&ata_ratelimit_lock, flags);
-
-        if (time_after(jiffies, ratelimit_time)) {
-                rc = 1;
-                ratelimit_time = jiffies + (HZ/5);
-        } else
-                rc = 0;
-
-        spin_unlock_irqrestore(&ata_ratelimit_lock, flags);
-
-        return rc;
+        return __ratelimit(&ratelimit);
 }
 
 /**