156 	rwlock_t	upl;		/* protects `ppp' */  member
1305 		read_lock_bh(&pch->upl);  in ppp_channel_push()
1309 		read_unlock_bh(&pch->upl);  in ppp_channel_push()
1345 	read_lock_bh(&pch->upl);  in ppp_input()
1357 	read_unlock_bh(&pch->upl);  in ppp_input()
1370 	read_lock_bh(&pch->upl);  in ppp_input_error()
1379 	read_unlock_bh(&pch->upl);  in ppp_input_error()
1842 	pch->upl = RW_LOCK_UNLOCKED;  in ppp_register_channel()
1873 		read_lock_bh(&pch->upl);  in ppp_unit_number()
1876 		read_unlock_bh(&pch->upl);  in ppp_unit_number()
2440 	write_lock_bh(&pch->upl);  in ppp_connect_channel()
2459 	write_unlock_bh(&pch->upl);  in ppp_connect_channel()
2474 	write_lock_bh(&pch->upl);  in ppp_disconnect_channel()
2477 	write_unlock_bh(&pch->upl);  in ppp_disconnect_channel()