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path: root/drivers/block/aoe/aoechr.c
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Diffstat (limited to 'drivers/block/aoe/aoechr.c')
-rw-r--r--drivers/block/aoe/aoechr.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/block/aoe/aoechr.c b/drivers/block/aoe/aoechr.c
index c04440cd6a3..181ebb85f0b 100644
--- a/drivers/block/aoe/aoechr.c
+++ b/drivers/block/aoe/aoechr.c
@@ -6,6 +6,7 @@
#include <linux/hdreg.h>
#include <linux/blkdev.h>
+#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/smp_lock.h>
#include "aoe.h"
@@ -36,7 +37,7 @@ struct ErrMsg {
static struct ErrMsg emsgs[NMSG];
static int emsgs_head_idx, emsgs_tail_idx;
-static struct semaphore emsgs_sema;
+static struct completion emsgs_comp;
static spinlock_t emsgs_lock;
static int nblocked_emsgs_readers;
static struct class *aoe_class;
@@ -141,7 +142,7 @@ bail: spin_unlock_irqrestore(&emsgs_lock, flags);
spin_unlock_irqrestore(&emsgs_lock, flags);
if (nblocked_emsgs_readers)
- up(&emsgs_sema);
+ complete(&emsgs_comp);
}
static ssize_t
@@ -221,7 +222,7 @@ aoechr_read(struct file *filp, char __user *buf, size_t cnt, loff_t *off)
spin_unlock_irqrestore(&emsgs_lock, flags);
- n = down_interruptible(&emsgs_sema);
+ n = wait_for_completion_interruptible(&emsgs_comp);
spin_lock_irqsave(&emsgs_lock, flags);
@@ -269,7 +270,7 @@ aoechr_init(void)
printk(KERN_ERR "aoe: can't register char device\n");
return n;
}
- sema_init(&emsgs_sema, 0);
+ init_completion(&emsgs_comp);
spin_lock_init(&emsgs_lock);
aoe_class = class_create(THIS_MODULE, "aoe");
if (IS_ERR(aoe_class)) {