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IB/srp: Semaphore to mutex conversion 

Convert srp_host->target_mutex from a semaphore to a mutex.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Ingo Molnar 2006-01-30 15:21:21 -08:00 committed by Roland Dreier
parent cbd2981a97
commit 8e9e5f4f5e
2 changed files with 9 additions and 10 deletions
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14
drivers/infiniband/ulp/srp/ib_srp.c
View File

@ -357,9 +357,9 @@ static void srp_remove_work(void *target_ptr)
target->state = SRP_TARGET_REMOVED;
spin_unlock_irq(target->scsi_host->host_lock);
down(&target->srp_host->target_mutex);
mutex_lock(&target->srp_host->target_mutex);
list_del(&target->list);
up(&target->srp_host->target_mutex);
mutex_unlock(&target->srp_host->target_mutex);
scsi_remove_host(target->scsi_host);
ib_destroy_cm_id(target->cm_id);
@ -1254,9 +1254,9 @@ static int srp_add_target(struct srp_host *host, struct srp_target_port *target)
if (scsi_add_host(target->scsi_host, host->dev->dma_device))
return -ENODEV;
down(&host->target_mutex);
mutex_lock(&host->target_mutex);
list_add_tail(&target->list, &host->target_list);
up(&host->target_mutex);
mutex_unlock(&host->target_mutex);
target->state = SRP_TARGET_LIVE;
@ -1525,7 +1525,7 @@ static struct srp_host *srp_add_port(struct ib_device *device, u8 port)
return NULL;
INIT_LIST_HEAD(&host->target_list);
init_MUTEX(&host->target_mutex);
mutex_init(&host->target_mutex);
init_completion(&host->released);
host->dev = device;
host->port = port;
@ -1626,7 +1626,7 @@ static void srp_remove_one(struct ib_device *device)
* Mark all target ports as removed, so we stop queueing
* commands and don't try to reconnect.
*/
down(&host->target_mutex);
mutex_lock(&host->target_mutex);
list_for_each_entry_safe(target, tmp_target,
&host->target_list, list) {
spin_lock_irqsave(target->scsi_host->host_lock, flags);
@ -1634,7 +1634,7 @@ static void srp_remove_one(struct ib_device *device)
target->state = SRP_TARGET_REMOVED;
spin_unlock_irqrestore(target->scsi_host->host_lock, flags);
}
up(&host->target_mutex);
mutex_unlock(&host->target_mutex);
/*
* Wait for any reconnection tasks that may have

5
drivers/infiniband/ulp/srp/ib_srp.h
View File

@ -37,8 +37,7 @@
#include <linux/types.h>
#include <linux/list.h>
#include <asm/semaphore.h>
#include <linux/mutex.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_cmnd.h>
@ -85,7 +84,7 @@ struct srp_host {
struct ib_mr *mr;
struct class_device class_dev;
struct list_head target_list;
struct semaphore target_mutex;
struct mutex target_mutex;
struct completion released;
struct list_head list;
};