llseek: automatically add .llseek fop

[sfrench/cifs-2.6.git] / drivers / usb / misc / rio500.c

diff --git a/drivers/usb/misc/rio500.c b/drivers/usb/misc/rio500.c
index a85771b1563d2c6151340b16da2319064da57cb4..4e23d3841b43df3a2ddd914181f6ccb581715c78 100644 (file)
--- a/drivers/usb/misc/rio500.c
+++ b/drivers/usb/misc/rio500.c
@@ -32,7 +32,7 @@
 #include <linux/kernel.h>
 #include <linux/signal.h>
 #include <linux/sched.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/errno.h>
 #include <linux/random.h>
 #include <linux/poll.h>
@@ -72,6 +72,7 @@ struct rio_usb_data {
        struct mutex lock;          /* general race avoidance */
 };
 
+static DEFINE_MUTEX(rio500_mutex);
 static struct rio_usb_data rio_instance;
 
 static int open_rio(struct inode *inode, struct file *file)
@@ -79,12 +80,12 @@ static int open_rio(struct inode *inode, struct file *file)
        struct rio_usb_data *rio = &rio_instance;
 
        /* against disconnect() */
-       lock_kernel();
+       mutex_lock(&rio500_mutex);
        mutex_lock(&(rio->lock));
 
        if (rio->isopen || !rio->present) {
                mutex_unlock(&(rio->lock));
-               unlock_kernel();
+               mutex_unlock(&rio500_mutex);
                return -EBUSY;
        }
        rio->isopen = 1;
@@ -94,7 +95,7 @@ static int open_rio(struct inode *inode, struct file *file)
        mutex_unlock(&(rio->lock));
 
        dev_info(&rio->rio_dev->dev, "Rio opened.\n");
-       unlock_kernel();
+       mutex_unlock(&rio500_mutex);
 
        return 0;
 }
@@ -438,6 +439,7 @@ static const struct file_operations usb_rio_fops = {
        .unlocked_ioctl = ioctl_rio,
        .open =         open_rio,
        .release =      close_rio,
+       .llseek =       noop_llseek,
 };
 
 static struct usb_class_driver usb_rio_class = {
@@ -491,7 +493,7 @@ static void disconnect_rio(struct usb_interface *intf)
        struct rio_usb_data *rio = usb_get_intfdata (intf);
 
        usb_set_intfdata (intf, NULL);
-       lock_kernel();
+       mutex_lock(&rio500_mutex);
        if (rio) {
                usb_deregister_dev(intf, &usb_rio_class);
 
@@ -501,7 +503,7 @@ static void disconnect_rio(struct usb_interface *intf)
                        /* better let it finish - the release will do whats needed */
                        rio->rio_dev = NULL;
                        mutex_unlock(&(rio->lock));
-                       unlock_kernel();
+                       mutex_unlock(&rio500_mutex);
                        return;
                }
                kfree(rio->ibuf);
@@ -512,7 +514,7 @@ static void disconnect_rio(struct usb_interface *intf)
                rio->present = 0;
                mutex_unlock(&(rio->lock));
        }
-       unlock_kernel();
+       mutex_unlock(&rio500_mutex);
 }
 
 static const struct usb_device_id rio_table[] = {