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path: root/drivers/usb/misc/rio500.c
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Diffstat (limited to 'drivers/usb/misc/rio500.c')
-rw-r--r--drivers/usb/misc/rio500.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/usb/misc/rio500.c b/drivers/usb/misc/rio500.c
index a85771b1563d..cc13ae61712a 100644
--- 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;
}
@@ -491,7 +492,7 @@ 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 +502,7 @@ 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 +513,7 @@ 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[] = {