diff options
Diffstat (limited to 'drivers/usb/usb-skeleton.c')
| -rw-r--r-- | drivers/usb/usb-skeleton.c | 22 |
1 files changed, 4 insertions, 18 deletions
diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c index 5c6c1bdbd45..b4a71679c93 100644 --- a/drivers/usb/usb-skeleton.c +++ b/drivers/usb/usb-skeleton.c @@ -60,7 +60,6 @@ struct usb_skel { __u8 bulk_in_endpointAddr; /* the address of the bulk in endpoint */ __u8 bulk_out_endpointAddr; /* the address of the bulk out endpoint */ int errors; /* the last request tanked */ - int open_count; /* count the number of openers */ bool ongoing_read; /* a read is going on */ bool processed_urb; /* indicates we haven't processed the urb */ spinlock_t err_lock; /* lock for errors */ @@ -113,22 +112,9 @@ static int skel_open(struct inode *inode, struct file *file) * in resumption */ mutex_lock(&dev->io_mutex); - if (!dev->open_count++) { - retval = usb_autopm_get_interface(interface); - if (retval) { - dev->open_count--; - mutex_unlock(&dev->io_mutex); - kref_put(&dev->kref, skel_delete); - goto exit; - } - } /* else { //uncomment this block if you want exclusive open - retval = -EBUSY; - dev->open_count--; - mutex_unlock(&dev->io_mutex); - kref_put(&dev->kref, skel_delete); - goto exit; - } */ - /* prevent the device from being autosuspended */ + retval = usb_autopm_get_interface(interface); + if (retval) + goto out_err; /* save our object in the file's private structure */ file->private_data = dev; @@ -148,7 +134,7 @@ static int skel_release(struct inode *inode, struct file *file) /* allow the device to be autosuspended */ mutex_lock(&dev->io_mutex); - if (!--dev->open_count && dev->interface) + if (dev->interface) usb_autopm_put_interface(dev->interface); mutex_unlock(&dev->io_mutex); |