1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c
index b860d650a563..5a3f93101017 100644
--- a/drivers/scsi/gdth.c
+++ b/drivers/scsi/gdth.c
@@ -120,7 +120,7 @@
 #include <linux/timer.h>
 #include <linux/dma-mapping.h>
 #include <linux/list.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/slab.h>
 #ifdef GDTH_RTC
@@ -140,6 +140,7 @@
 #include <scsi/scsi_host.h>
 #include "gdth.h"
+static DEFINE_MUTEX(gdth_mutex);
 static void gdth_delay(int milliseconds);
 static void gdth_eval_mapping(u32 size, u32 *cyls, int *heads, int *secs);
 static irqreturn_t gdth_interrupt(int irq, void *dev_id);
@@ -372,6 +373,7 @@ static const struct file_operations gdth_fops = {
    .unlocked_ioctl   = gdth_unlocked_ioctl,
    .open    = gdth_open,
    .release = gdth_close,
+    .llseek = noop_llseek,
 };
 #include "gdth_proc.h"
@@ -4042,12 +4044,12 @@ static int gdth_open(struct inode *inode, struct file *filep)
 {
    gdth_ha_str *ha;
-    lock_kernel();
+    mutex_lock(&gdth_mutex);
    list_for_each_entry(ha, &gdth_instances, list) {
        if (!ha->sdev)
            ha->sdev = scsi_get_host_dev(ha->shost);
    }
-    unlock_kernel();
+    mutex_unlock(&gdth_mutex);
    TRACE(("gdth_open()\n"));
    return 0;
@@ -4615,9 +4617,9 @@ static long gdth_unlocked_ioctl(struct file *file, unsigned int cmd,
 {
        int ret;
-        lock_kernel();
+        mutex_lock(&gdth_mutex);
        ret = gdth_ioctl(file, cmd, arg);
-        unlock_kernel();
+        mutex_unlock(&gdth_mutex);
        return ret;
 }