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[SCSI] megaraid_mbox: use mutex instead of semaphore

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The Megaraid Mailbox driver uses a semaphore as mutex.  Use the mutex API
instead of the (binary) semaphore.

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Acked-by: "Patro, Sumant" <Sumant.Patro@lsi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Matthias Kaehlcke 2007-07-09 12:00:11 -07:00 committed by James Bottomley
parent 5fa0f5e47a
commit 0c2cc43379
3 changed files with 6 additions and 5 deletions
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1
drivers/scsi/megaraid/mega_common.h
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@ -21,6 +21,7 @@
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/mutex.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/blkdev.h>

6
drivers/scsi/megaraid/megaraid_mbox.c
View File

@ -3880,7 +3880,7 @@ megaraid_sysfs_alloc_resources(adapter_t *adapter)
megaraid_sysfs_free_resources(adapter);
}
sema_init(&raid_dev->sysfs_sem, 1);
mutex_init(&raid_dev->sysfs_mtx);
init_waitqueue_head(&raid_dev->sysfs_wait_q);
@ -3981,7 +3981,7 @@ megaraid_sysfs_get_ldmap(adapter_t *adapter)
/*
* Allow only one read at a time to go through the sysfs attributes
*/
down(&raid_dev->sysfs_sem);
mutex_lock(&raid_dev->sysfs_mtx);
uioc = raid_dev->sysfs_uioc;
mbox64 = raid_dev->sysfs_mbox64;
@ -4057,7 +4057,7 @@ megaraid_sysfs_get_ldmap(adapter_t *adapter)
del_timer_sync(timerp);
up(&raid_dev->sysfs_sem);
mutex_unlock(&raid_dev->sysfs_mtx);
return rval;
}

4
drivers/scsi/megaraid/megaraid_mbox.h
View File

@ -168,7 +168,7 @@ typedef struct {
* @hw_error : set if FW not responding
* @fast_load : If set, skip physical device scanning
* @channel_class : channel class, RAID or SCSI
* @sysfs_sem : semaphore to serialize access to sysfs res.
* @sysfs_mtx : mutex to serialize access to sysfs res.
* @sysfs_uioc : management packet to issue FW calls from sysfs
* @sysfs_mbox64 : mailbox packet to issue FW calls from sysfs
* @sysfs_buffer : data buffer for FW commands issued from sysfs
@ -208,7 +208,7 @@ typedef struct {
int hw_error;
int fast_load;
uint8_t channel_class;
struct semaphore sysfs_sem;
struct mutex sysfs_mtx;
uioc_t *sysfs_uioc;
mbox64_t *sysfs_mbox64;
caddr_t sysfs_buffer;