[SCSI] megaraid_sas: Convert aen_mutex to the mutex API

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Acked-by: Bo Yang <Bo.Yang@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

2 files changed, 5 insertions, 4 deletions

diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index e3c5c5282203..3ad379fcd18f 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -31,6 +31,7 @@
 #include <linux/moduleparam.h>
 #include <linux/module.h>
 #include <linux/spinlock.h>
+#include <linux/mutex.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
 #include <linux/uio.h>
@@ -2358,7 +2359,7 @@ megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 
         spin_lock_init(&instance->cmd_pool_lock);
 
-        sema_init(&instance->aen_mutex, 1);
+        mutex_init(&instance->aen_mutex);
         sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS);
 
         /*
@@ -2874,10 +2875,10 @@ static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
         if (!instance)
                 return -ENODEV;
 
-        down(&instance->aen_mutex);
+        mutex_lock(&instance->aen_mutex);
         error = megasas_register_aen(instance, aen.seq_num,
                                      aen.class_locale_word);
-        up(&instance->aen_mutex);
+        mutex_unlock(&instance->aen_mutex);
         return error;
 }
 
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 4dffc918a414..08c74c991781 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -1089,7 +1089,7 @@ struct megasas_instance {
         struct megasas_evt_detail *evt_detail;
         dma_addr_t evt_detail_h;
         struct megasas_cmd *aen_cmd;
-        struct semaphore aen_mutex;
+        struct mutex aen_mutex;
         struct semaphore ioctl_sem;
 
         struct Scsi_Host *host;