diff options
Diffstat (limited to 'drivers/hid/usbhid/hiddev.c')
| -rw-r--r-- | drivers/hid/usbhid/hiddev.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c index aa214170baf4..e9b436d2d944 100644 --- a/drivers/hid/usbhid/hiddev.c +++ b/drivers/hid/usbhid/hiddev.c @@ -246,10 +246,12 @@ static int hiddev_release(struct inode * inode, struct file * file) spin_unlock_irqrestore(&list->hiddev->list_lock, flags); if (!--list->hiddev->open) { - if (list->hiddev->exist) + if (list->hiddev->exist) { usbhid_close(list->hiddev->hid); - else + usbhid_put_power(list->hiddev->hid); + } else { kfree(list->hiddev); + } } kfree(list); @@ -300,6 +302,17 @@ static int hiddev_open(struct inode *inode, struct file *file) list_add_tail(&list->node, &hiddev_table[i]->list); spin_unlock_irq(&list->hiddev->list_lock); + if (!list->hiddev->open++) + if (list->hiddev->exist) { + struct hid_device *hid = hiddev_table[i]->hid; + res = usbhid_get_power(hid); + if (res < 0) { + res = -EIO; + goto bail; + } + usbhid_open(hid); + } + return 0; bail: file->private_data = NULL; @@ -875,16 +888,21 @@ int hiddev_connect(struct hid_device *hid, unsigned int force) hiddev->hid = hid; hiddev->exist = 1; + /* when lock_kernel() usage is fixed in usb_open(), + * we could also fix it here */ + lock_kernel(); retval = usb_register_dev(usbhid->intf, &hiddev_class); if (retval) { err_hid("Not able to get a minor for this device."); hid->hiddev = NULL; + unlock_kernel(); kfree(hiddev); return -1; } else { hid->minor = usbhid->intf->minor; hiddev_table[usbhid->intf->minor - HIDDEV_MINOR_BASE] = hiddev; } + unlock_kernel(); return 0; } |