Input: elo - use guard notation when pausing serio port

Using guard notation makes the code more compact and error handling
more robust by ensuring that serio ports are resumed in all code paths
when control leaves critical section.

Link: https://lore.kernel.org/r/20240905041732.2034348-10-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/touchscreen/elo.c b/drivers/input/touchscreen/elo.c
index eb883db..ad209e6 100644 (file)
--- a/drivers/input/touchscreen/elo.c
+++ b/drivers/input/touchscreen/elo.c
@@ -225,10 +225,10 @@ static int elo_command_10(struct elo *elo, unsigned char *packet)
 
        mutex_lock(&elo->cmd_mutex);
 
-       serio_pause_rx(elo->serio);
-       elo->expected_packet = toupper(packet[0]);
-       init_completion(&elo->cmd_done);
-       serio_continue_rx(elo->serio);
+       scoped_guard(serio_pause_rx, elo->serio) {
+               elo->expected_packet = toupper(packet[0]);
+               init_completion(&elo->cmd_done);
+       }
 
        if (serio_write(elo->serio, ELO10_LEAD_BYTE))
                goto out;