Input: synaptics - 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/20240905041732.2034348-6-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 380aa16..2735f86 100644 (file)
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -650,9 +650,8 @@ static int synaptics_pt_start(struct serio *serio)
        struct psmouse *parent = psmouse_from_serio(serio->parent);
        struct synaptics_data *priv = parent->private;
 
-       serio_pause_rx(parent->ps2dev.serio);
+       guard(serio_pause_rx)(parent->ps2dev.serio);
        priv->pt_port = serio;
-       serio_continue_rx(parent->ps2dev.serio);
 
        return 0;
 }
@@ -662,9 +661,8 @@ static void synaptics_pt_stop(struct serio *serio)
        struct psmouse *parent = psmouse_from_serio(serio->parent);
        struct synaptics_data *priv = parent->private;
 
-       serio_pause_rx(parent->ps2dev.serio);
+       guard(serio_pause_rx)(parent->ps2dev.serio);
        priv->pt_port = NULL;
-       serio_continue_rx(parent->ps2dev.serio);
 }
 
 static int synaptics_is_pt_packet(u8 *buf)