Input: cypress_ps2 - report timeouts when reading command status

Report -ETIMEDOUT error code from cypress_ps2_read_cmd_status() when
device does not send enough data within the allotted time in response
to a command.

Link: https://lore.kernel.org/r/20240628224728.2180126-3-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Author: dtor

drivers/input/mouse/cypress_ps2.c

@@ -115,9 +115,12 @@ static int cypress_ps2_read_cmd_status(struct psmouse *psmouse,
 	if (rc < 0)
 		goto out;
 
-	wait_event_timeout(ps2dev->wait,
-			(psmouse->pktcnt >= pktsize),
-			msecs_to_jiffies(CYTP_CMD_TIMEOUT));
+	if (!wait_event_timeout(ps2dev->wait,
+				psmouse->pktcnt >= pktsize,
+				msecs_to_jiffies(CYTP_CMD_TIMEOUT))) {
+		rc = -ETIMEDOUT;
+		goto out;
+	}
 
 	memcpy(param, psmouse->packet, pktsize);