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path: root/drivers/message/fusion/mptctl.c
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Diffstat (limited to 'drivers/message/fusion/mptctl.c')
-rw-r--r--drivers/message/fusion/mptctl.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/message/fusion/mptctl.c b/drivers/message/fusion/mptctl.c
index d8ddfdf8be14..a3856ed90aef 100644
--- a/drivers/message/fusion/mptctl.c
+++ b/drivers/message/fusion/mptctl.c
@@ -54,7 +54,7 @@
#include <linux/pci.h>
#include <linux/delay.h> /* for mdelay */
#include <linux/miscdevice.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
#include <linux/compat.h>
#include <asm/io.h>
@@ -83,6 +83,7 @@ MODULE_VERSION(my_VERSION);
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
+static DEFINE_MUTEX(mpctl_mutex);
static u8 mptctl_id = MPT_MAX_PROTOCOL_DRIVERS;
static u8 mptctl_taskmgmt_id = MPT_MAX_PROTOCOL_DRIVERS;
@@ -601,12 +602,12 @@ mptctl_fasync(int fd, struct file *filep, int mode)
MPT_ADAPTER *ioc;
int ret;
- lock_kernel();
+ mutex_lock(&mpctl_mutex);
list_for_each_entry(ioc, &ioc_list, list)
ioc->aen_event_read_flag=0;
ret = fasync_helper(fd, filep, mode, &async_queue);
- unlock_kernel();
+ mutex_unlock(&mpctl_mutex);
return ret;
}
@@ -698,9 +699,9 @@ static long
mptctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
long ret;
- lock_kernel();
+ mutex_lock(&mpctl_mutex);
ret = __mptctl_ioctl(file, cmd, arg);
- unlock_kernel();
+ mutex_unlock(&mpctl_mutex);
return ret;
}
@@ -2926,7 +2927,7 @@ compat_mpt_command(struct file *filp, unsigned int cmd,
static long compat_mpctl_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
{
long ret;
- lock_kernel();
+ mutex_lock(&mpctl_mutex);
switch (cmd) {
case MPTIOCINFO:
case MPTIOCINFO1:
@@ -2951,7 +2952,7 @@ static long compat_mpctl_ioctl(struct file *f, unsigned int cmd, unsigned long a
ret = -ENOIOCTLCMD;
break;
}
- unlock_kernel();
+ mutex_unlock(&mpctl_mutex);
return ret;
}