#include <linux/usb.h>
#include <linux/hid.h>
#include <linux/hiddev.h>
+#include <linux/compat.h>
#include "usbhid.h"
#ifdef CONFIG_USB_DYNAMIC_MINORS
wait_queue_head_t wait;
struct hid_device *hid;
struct list_head list;
+ spinlock_t list_lock;
};
struct hiddev_list {
{
struct hiddev *hiddev = hid->hiddev;
struct hiddev_list *list;
+ unsigned long flags;
+ spin_lock_irqsave(&hiddev->list_lock, flags);
list_for_each_entry(list, &hiddev->list, node) {
if (uref->field_index != HID_FIELD_INDEX_NONE ||
(list->flags & HIDDEV_FLAG_REPORT) != 0) {
kill_fasync(&list->fasync, SIGIO, POLL_IN);
}
}
+ spin_unlock_irqrestore(&hiddev->list_lock, flags);
wake_up_interruptible(&hiddev->wait);
}
static int hiddev_release(struct inode * inode, struct file * file)
{
struct hiddev_list *list = file->private_data;
+ unsigned long flags;
hiddev_fasync(-1, file, 0);
+
+ spin_lock_irqsave(&list->hiddev->list_lock, flags);
list_del(&list->node);
+ spin_unlock_irqrestore(&list->hiddev->list_lock, flags);
if (!--list->hiddev->open) {
if (list->hiddev->exist)
static int hiddev_open(struct inode *inode, struct file *file)
{
struct hiddev_list *list;
+ unsigned long flags;
int i = iminor(inode) - HIDDEV_MINOR_BASE;
return -ENOMEM;
list->hiddev = hiddev_table[i];
+
+ spin_lock_irqsave(&list->hiddev->list_lock, flags);
list_add_tail(&list->node, &hiddev_table[i]->list);
+ spin_unlock_irqrestore(&list->hiddev->list_lock, flags);
+
file->private_data = list;
if (!list->hiddev->open++)
return -EINVAL;
}
+#ifdef CONFIG_COMPAT
+static long hiddev_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct inode *inode = file->f_path.dentry->d_inode;
+ return hiddev_ioctl(inode, file, cmd, (unsigned long)compat_ptr(arg));
+}
+#endif
+
static const struct file_operations hiddev_fops = {
.owner = THIS_MODULE,
.read = hiddev_read,
.release = hiddev_release,
.ioctl = hiddev_ioctl,
.fasync = hiddev_fasync,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = hiddev_compat_ioctl,
+#endif
};
static struct usb_class_driver hiddev_class = {
retval = usb_register_dev(usbhid->intf, &hiddev_class);
if (retval) {
- err("Not able to get a minor for this device.");
+ err_hid("Not able to get a minor for this device.");
kfree(hiddev);
return -1;
}
init_waitqueue_head(&hiddev->wait);
INIT_LIST_HEAD(&hiddev->list);
+ spin_lock_init(&hiddev->list_lock);
hiddev->hid = hid;
hiddev->exist = 1;