w1: added w1 reset command

Command which allows to reset the bus.

Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Paul Alfille <paul.alfille@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/w1/w1_netlink.c

@@ -197,6 +197,9 @@ static int w1_process_command_master(struct w1_master *dev, struct cn_msg *req_m
 	case W1_CMD_TOUCH:
 		err = w1_process_command_io(dev, msg, hdr, cmd);
 		break;
+	case W1_CMD_RESET:
+		err = w1_reset_bus(dev);
+		break;
 	default:
 		cmd->res = EINVAL;
 		cn_netlink_send(msg, 0, GFP_KERNEL);

drivers/w1/w1_netlink.h

@@ -58,6 +58,7 @@ enum w1_commands {
 	W1_CMD_SEARCH,
 	W1_CMD_ALARM_SEARCH,
 	W1_CMD_TOUCH,
+	W1_CMD_RESET,
 	W1_CMD_MAX,
 };