net/rxrpc/rxgk.c:580: warning: No description found for return value of 'rxgk_kernel_query_challenge'
net/rxrpc/rxgk.c:880: warning: No description found for return value of 'rxgk_kernel_respond_to_challenge'
net/rxrpc/rxgk.c:726: warning: No description found for return value of 'rxgk_kernel_query_challenge'
net/rxrpc/rxgk.c:1026: warning: No description found for return value of 'rxgk_kernel_respond_to_challenge'