block: autoconvert trivial BKL users to private mutex

[net-next-2.6.git] / drivers / block / DAC960.c

diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index c5f22bb0a48efb78422f770bb298fdcc94203d96..da0f6ddd7621d4d1e0ae63f80a05ced1d06174a9 100644 (file)
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -36,7 +36,7 @@
 #include <linux/ioport.h>
 #include <linux/mm.h>
 #include <linux/slab.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/reboot.h>
@@ -54,6 +54,7 @@
 #define DAC960_GAM_MINOR       252
 
 
+static DEFINE_MUTEX(DAC960_mutex);
 static DAC960_Controller_T *DAC960_Controllers[DAC960_MaxControllers];
 static int DAC960_ControllerCount;
 static struct proc_dir_entry *DAC960_ProcDirectoryEntry;
@@ -79,23 +80,28 @@ static int DAC960_open(struct block_device *bdev, fmode_t mode)
        struct gendisk *disk = bdev->bd_disk;
        DAC960_Controller_T *p = disk->queue->queuedata;
        int drive_nr = (long)disk->private_data;
+       int ret = -ENXIO;
 
+       mutex_lock(&DAC960_mutex);
        if (p->FirmwareType == DAC960_V1_Controller) {
                if (p->V1.LogicalDriveInformation[drive_nr].
                    LogicalDriveState == DAC960_V1_LogicalDrive_Offline)
-                       return -ENXIO;
+                       goto out;
        } else {
                DAC960_V2_LogicalDeviceInfo_T *i =
                        p->V2.LogicalDeviceInformation[drive_nr];
                if (!i || i->LogicalDeviceState == DAC960_V2_LogicalDevice_Offline)
-                       return -ENXIO;
+                       goto out;
        }
 
        check_disk_change(bdev);
 
        if (!get_capacity(p->disks[drive_nr]))
-               return -ENXIO;
-       return 0;
+               goto out;
+       ret = 0;
+out:
+       mutex_unlock(&DAC960_mutex);
+       return ret;
 }
 
 static int DAC960_getgeo(struct block_device *bdev, struct hd_geometry *geo)
@@ -6620,7 +6626,7 @@ static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
   long ErrorCode = 0;
   if (!capable(CAP_SYS_ADMIN)) return -EACCES;
 
-  lock_kernel();
+  mutex_lock(&DAC960_mutex);
   switch (Request)
     {
     case DAC960_IOCTL_GET_CONTROLLER_COUNT:
@@ -7051,7 +7057,7 @@ static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
       default:
        ErrorCode = -ENOTTY;
     }
-  unlock_kernel();
+  mutex_unlock(&DAC960_mutex);
   return ErrorCode;
 }