usb_autopm_get_interface_async (9) - Linux Manuals

usb_autopm_get_interface_async: increment a USB interface's PM-usage counter

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.

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