centos man page for usb_find_alt_setting

USB_FIND_ALT_SETTING(9) 					   USB Core APIs					   USB_FIND_ALT_SETTING(9)

NAME
       usb_find_alt_setting - Given a configuration, find the alternate setting for the given interface.

SYNOPSIS
       struct usb_host_interface * usb_find_alt_setting(struct usb_host_config * config, unsigned int iface_num, unsigned int alt_num);

ARGUMENTS
       config
	   the configuration to search (not necessarily the current config).

       iface_num
	   interface number to search in

       alt_num
	   alternate interface setting number to search for.

DESCRIPTION
       Search the configuration's interface cache for the given alt setting.

RETURN
       The alternate setting, if found.  NULL otherwise.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   USB_FIND_ALT_SETTING(9)