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 3635f9e37559..d9a95847ec1f 100644 --- a/drivers/usb/usb-skeleton.c +++ b/drivers/usb/usb-skeleton.c | |||
@@ -62,7 +62,6 @@ struct usb_skel { | |||
62 | __u8 bulk_in_endpointAddr; /* the address of the bulk in endpoint */ | 62 | __u8 bulk_in_endpointAddr; /* the address of the bulk in endpoint */ |
63 | __u8 bulk_out_endpointAddr; /* the address of the bulk out endpoint */ | 63 | __u8 bulk_out_endpointAddr; /* the address of the bulk out endpoint */ |
64 | int errors; /* the last request tanked */ | 64 | int errors; /* the last request tanked */ |
65 | int open_count; /* count the number of openers */ | ||
66 | bool ongoing_read; /* a read is going on */ | 65 | bool ongoing_read; /* a read is going on */ |
67 | bool processed_urb; /* indicates we haven't processed the urb */ | 66 | bool processed_urb; /* indicates we haven't processed the urb */ |
68 | spinlock_t err_lock; /* lock for errors */ | 67 | spinlock_t err_lock; /* lock for errors */ |
@@ -122,22 +121,9 @@ static int skel_open(struct inode *inode, struct file *file) | |||
122 | goto out_err; | 121 | goto out_err; |
123 | } | 122 | } |
124 | 123 | ||
125 | if (!dev->open_count++) { | 124 | retval = usb_autopm_get_interface(interface); |
126 | retval = usb_autopm_get_interface(interface); | 125 | if (retval) |
127 | if (retval) { | 126 | goto out_err; |
128 | dev->open_count--; | ||
129 | mutex_unlock(&dev->io_mutex); | ||
130 | kref_put(&dev->kref, skel_delete); | ||
131 | goto exit; | ||
132 | } | ||
133 | } /* else { //uncomment this block if you want exclusive open | ||
134 | retval = -EBUSY; | ||
135 | dev->open_count--; | ||
136 | mutex_unlock(&dev->io_mutex); | ||
137 | kref_put(&dev->kref, skel_delete); | ||
138 | goto exit; | ||
139 | } */ | ||
140 | /* prevent the device from being autosuspended */ | ||
141 | 127 | ||
142 | /* save our object in the file's private structure */ | 128 | /* save our object in the file's private structure */ |
143 | file->private_data = dev; | 129 | file->private_data = dev; |
@@ -161,7 +147,7 @@ static int skel_release(struct inode *inode, struct file *file) | |||
161 | 147 | ||
162 | /* allow the device to be autosuspended */ | 148 | /* allow the device to be autosuspended */ |
163 | mutex_lock(&dev->io_mutex); | 149 | mutex_lock(&dev->io_mutex); |
164 | if (!--dev->open_count && dev->interface) | 150 | if (dev->interface) |
165 | usb_autopm_put_interface(dev->interface); | 151 | usb_autopm_put_interface(dev->interface); |
166 | mutex_unlock(&dev->io_mutex); | 152 | mutex_unlock(&dev->io_mutex); |
167 | 153 | ||