table of contents
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 result is > 0. The differences are that it does not acquire the device´s pm_mutex (callers must handle all synchronization issues themselves), and it does not autoresume the device directly (it only queues a request). After a successful call, the device will generally not yet be resumed.
This routine can run in atomic context.
COPYRIGHT¶
May 2024 | Kernel Hackers Manual 2.6. |