diff options
| author | Matthias Kaehlcke <matthias.kaehlcke@gmail.com> | 2007-07-09 12:00:11 -0700 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.localdomain> | 2007-07-14 19:10:19 -0500 |
| commit | 0c2cc4337968f7aab91a91b8d5889982e3a3bd0d (patch) | |
| tree | 96843d958292098ee5b821658e20583a1d35504b /drivers | |
| parent | 5fa0f5e47a87ceb8a3269b28fa14764b37364f63 (diff) | |
| download | linux-0c2cc4337968f7aab91a91b8d5889982e3a3bd0d.tar.bz2 | |
[SCSI] megaraid_mbox: use mutex instead of semaphore
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/megaraid/mega_common.h | 1 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_mbox.c | 6 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_mbox.h | 4 |
3 files changed, 6 insertions, 5 deletions
diff --git a/drivers/scsi/megaraid/mega_common.h b/drivers/scsi/megaraid/mega_common.h index 26e1e6c55654..fef9ac958754 100644 --- a/drivers/scsi/megaraid/mega_common.h +++ b/drivers/scsi/megaraid/mega_common.h @@ -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> diff --git a/drivers/scsi/megaraid/megaraid_mbox.c b/drivers/scsi/megaraid/megaraid_mbox.c index 7d5a4d651b03..c46685a03a9f 100644 --- a/drivers/scsi/megaraid/megaraid_mbox.c +++ b/drivers/scsi/megaraid/megaraid_mbox.c @@ -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; } diff --git a/drivers/scsi/megaraid/megaraid_mbox.h b/drivers/scsi/megaraid/megaraid_mbox.h index 9de803cebd4b..626459d1e902 100644 --- a/drivers/scsi/megaraid/megaraid_mbox.h +++ b/drivers/scsi/megaraid/megaraid_mbox.h @@ -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; |