serial: sh-sci: Switch to use hrtimer_setup()

hrtimer_setup() takes the callback function pointer as argument and
initializes the timer completely.

Replace hrtimer_init() and the open coded initialization of
hrtimer::function with the new setup mechanism.

Patch was created by using Coccinelle.

Acked-by: Zack Rusin <[email protected]>
Signed-off-by: Nam Cao <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Link: https://lore.kernel.org/r/c21664d013015584aebbb6bb8cedd748182cb551.1738746904.git.namcao@linutronix.de
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: covanam

drivers/tty/serial/sh-sci.c

@@ -1714,8 +1714,7 @@ static void sci_request_dma(struct uart_port *port)
 			dma += s->buf_len_rx;
 		}
 
-		hrtimer_init(&s->rx_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
-		s->rx_timer.function = sci_dma_rx_timer_fn;
+		hrtimer_setup(&s->rx_timer, sci_dma_rx_timer_fn, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
 
 		s->chan_rx_saved = s->chan_rx = chan;