linux-kernel - RE: [PATCH] MegaRAID SAS: Convert aen

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Date:	Wed, 14 Nov 2007 12:47:40 -0700
From:	"Yang, Bo" <Bo.Yang@....com>
To:	"Matthias Kaehlcke" <matthias.kaehlcke@...il.com>,
	"DL-MegaRAID Linux" <megaraidlinux@....com>,
	<linux-scsi@...r.kernel.org>
Cc:	<linux-kernel@...r.kernel.org>,
	"Andrew Morton" <akpm@...ux-foundation.org>
Subject: RE: [PATCH] MegaRAID SAS: Convert aen_mutex to the mutex API

ACK

Thanks.

Bo Yang 

-----Original Message-----
From: Matthias Kaehlcke [mailto:matthias.kaehlcke@...il.com] 
Sent: Saturday, October 27, 2007 3:49 AM
To: DL-MegaRAID Linux; linux-scsi@...r.kernel.org
Cc: linux-kernel@...r.kernel.org; Andrew Morton
Subject: [PATCH] MegaRAID SAS: Convert aen_mutex to the mutex API

MegaRAID SAS: Convert aen_mutex to the mutex API

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@...il.com>

--

index e3c5c52..3ad379f 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 4dffc91..08c74c9 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;

--
Matthias Kaehlcke
Linux Application Developer
Barcelona

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