HID: minimal autosuspend support for USB HID devices
Autosuspend for USB HID devices remains problematic as far as mice and keyboards are concerned. While I am working on a grand solution, here's a minimalist patch that works for those devices not continously in use. Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
parent
1fe8736da6
commit
933e3187d0
|
@ -512,7 +512,16 @@ static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
|
|||
|
||||
int usbhid_open(struct hid_device *hid)
|
||||
{
|
||||
++hid->open;
|
||||
struct usbhid_device *usbhid = hid->driver_data;
|
||||
int res;
|
||||
|
||||
if (!hid->open++) {
|
||||
res = usb_autopm_get_interface(usbhid->intf);
|
||||
if (res < 0) {
|
||||
hid->open--;
|
||||
return -EIO;
|
||||
}
|
||||
}
|
||||
if (hid_start_in(hid))
|
||||
hid_io_error(hid);
|
||||
return 0;
|
||||
|
@ -522,8 +531,10 @@ void usbhid_close(struct hid_device *hid)
|
|||
{
|
||||
struct usbhid_device *usbhid = hid->driver_data;
|
||||
|
||||
if (!--hid->open)
|
||||
if (!--hid->open) {
|
||||
usb_kill_urb(usbhid->urbin);
|
||||
usb_autopm_put_interface(usbhid->intf);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
|
@ -1048,6 +1059,7 @@ static struct usb_driver hid_driver = {
|
|||
.pre_reset = hid_pre_reset,
|
||||
.post_reset = hid_post_reset,
|
||||
.id_table = hid_usb_ids,
|
||||
.supports_autosuspend = 1,
|
||||
};
|
||||
|
||||
static int __init hid_init(void)
|
||||
|
|
Loading…
Reference in a new issue