1 files changed, 16 insertions, 16 deletions

diff --git a/drivers/usb/gadget/printer.c b/drivers/usb/gadget/printer.c
index 43abf55d8c60..4c3ac5c42237 100644
--- a/drivers/usb/gadget/printer.c
+++ b/drivers/usb/gadget/printer.c
@@ -82,7 +82,7 @@ static struct class *usb_gadget_class;
 struct printer_dev {
         spinlock_t              lock;           /* lock this structure */
         /* lock buffer lists during read/write calls */
-        spinlock_t              lock_printer_io;
+        struct mutex            lock_printer_io;
         struct usb_gadget       *gadget;
         struct usb_request      *req;           /* for control responses */
         u8                      config;
@@ -567,7 +567,7 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr)
 
         DBG(dev, "printer_read trying to read %d bytes\n", (int)len);
 
-        spin_lock(&dev->lock_printer_io);
+        mutex_lock(&dev->lock_printer_io);
         spin_lock_irqsave(&dev->lock, flags);
 
         /* We will use this flag later to check if a printer reset happened
@@ -601,7 +601,7 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr)
                  * call or not.
                  */
                 if (fd->f_flags & (O_NONBLOCK|O_NDELAY)) {
-                        spin_unlock(&dev->lock_printer_io);
+                        mutex_unlock(&dev->lock_printer_io);
                         return -EAGAIN;
                 }
 
@@ -648,7 +648,7 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr)
                 if (dev->reset_printer) {
                         list_add(&current_rx_req->list, &dev->rx_reqs);
                         spin_unlock_irqrestore(&dev->lock, flags);
-                        spin_unlock(&dev->lock_printer_io);
+                        mutex_unlock(&dev->lock_printer_io);
                         return -EAGAIN;
                 }
 
@@ -673,7 +673,7 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr)
         dev->current_rx_buf = current_rx_buf;
 
         spin_unlock_irqrestore(&dev->lock, flags);
-        spin_unlock(&dev->lock_printer_io);
+        mutex_unlock(&dev->lock_printer_io);
 
         DBG(dev, "printer_read returned %d bytes\n", (int)bytes_copied);
 
@@ -697,7 +697,7 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
         if (len == 0)
                 return -EINVAL;
 
-        spin_lock(&dev->lock_printer_io);
+        mutex_lock(&dev->lock_printer_io);
         spin_lock_irqsave(&dev->lock, flags);
 
         /* Check if a printer reset happens while we have interrupts on */
@@ -713,7 +713,7 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
                  * a NON-Blocking call or not.
                  */
                 if (fd->f_flags & (O_NONBLOCK|O_NDELAY)) {
-                        spin_unlock(&dev->lock_printer_io);
+                        mutex_unlock(&dev->lock_printer_io);
                         return -EAGAIN;
                 }
 
@@ -752,7 +752,7 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
 
                 if (copy_from_user(req->buf, buf, size)) {
                         list_add(&req->list, &dev->tx_reqs);
-                        spin_unlock(&dev->lock_printer_io);
+                        mutex_unlock(&dev->lock_printer_io);
                         return bytes_copied;
                 }
 
@@ -766,14 +766,14 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
                 if (dev->reset_printer) {
                         list_add(&req->list, &dev->tx_reqs);
                         spin_unlock_irqrestore(&dev->lock, flags);
-                        spin_unlock(&dev->lock_printer_io);
+                        mutex_unlock(&dev->lock_printer_io);
                         return -EAGAIN;
                 }
 
                 if (usb_ep_queue(dev->in_ep, req, GFP_ATOMIC)) {
                         list_add(&req->list, &dev->tx_reqs);
                         spin_unlock_irqrestore(&dev->lock, flags);
-                        spin_unlock(&dev->lock_printer_io);
+                        mutex_unlock(&dev->lock_printer_io);
                         return -EAGAIN;
                 }
 
@@ -782,7 +782,7 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
         }
 
         spin_unlock_irqrestore(&dev->lock, flags);
-        spin_unlock(&dev->lock_printer_io);
+        mutex_unlock(&dev->lock_printer_io);
 
         DBG(dev, "printer_write sent %d bytes\n", (int)bytes_copied);
 
@@ -820,11 +820,11 @@ printer_poll(struct file *fd, poll_table *wait)
         unsigned long           flags;
         int                     status = 0;
 
-        spin_lock(&dev->lock_printer_io);
+        mutex_lock(&dev->lock_printer_io);
         spin_lock_irqsave(&dev->lock, flags);
         setup_rx_reqs(dev);
         spin_unlock_irqrestore(&dev->lock, flags);
-        spin_unlock(&dev->lock_printer_io);
+        mutex_unlock(&dev->lock_printer_io);
 
         poll_wait(fd, &dev->rx_wait, wait);
         poll_wait(fd, &dev->tx_wait, wait);
@@ -1461,7 +1461,7 @@ autoconf_fail:
         }
 
         spin_lock_init(&dev->lock);
-        spin_lock_init(&dev->lock_printer_io);
+        mutex_init(&dev->lock_printer_io);
         INIT_LIST_HEAD(&dev->tx_reqs);
         INIT_LIST_HEAD(&dev->tx_reqs_active);
         INIT_LIST_HEAD(&dev->rx_reqs);
@@ -1594,7 +1594,7 @@ cleanup(void)
 {
         int status;
 
-        spin_lock(&usb_printer_gadget.lock_printer_io);
+        mutex_lock(&usb_printer_gadget.lock_printer_io);
         class_destroy(usb_gadget_class);
         unregister_chrdev_region(g_printer_devno, 2);
 
@@ -1602,6 +1602,6 @@ cleanup(void)
         if (status)
                 ERROR(dev, "usb_gadget_unregister_driver %x\n", status);
 
-        spin_unlock(&usb_printer_gadget.lock_printer_io);
+        mutex_unlock(&usb_printer_gadget.lock_printer_io);
 }
 module_exit(cleanup);