| USB_AUTOPM_GET_INTER(9) | USB Core APIs | USB_AUTOPM_GET_INTER(9) |
NAME¶
usb_autopm_get_interface_async - increment a USB interface's PM-usage counter
SYNOPSIS¶
int usb_autopm_get_interface_async(struct usb_interface * intf);
ARGUMENTS¶
intf
the usb_interface whose counter should be
incremented
DESCRIPTION¶
This routine does much the same thing as usb_autopm_get_interface: It increments intf's usage counter and queues an autoresume request if the device is suspended. The differences are that it does not perform any synchronization (callers should hold a private lock and handle all synchronization issues themselves), and it does not autoresume the device directly (it only queues a request). After a successful call, the device may not yet be resumed.
This routine can run in atomic context.
RETURN¶
0 on success. A negative error code otherwise.
COPYRIGHT¶
| June 2024 | Kernel Hackers Manual 3.10 |