From fcb451ff66b4e07de78faefb07549b139b54b943 Mon Sep 17 00:00:00 2001 From: Jiapeng Chong Date: Thu, 3 Aug 2023 16:47:53 +0800 Subject: 8250_men_mcb: Fix unsigned comparison with less than zero The data->line[i] is defined as unsigned int type, if(data->line[i] < 0) is invalid, so replace data->line[i] with res. ./drivers/tty/serial/8250/8250_men_mcb.c:223:6-19: WARNING: Unsigned expression compared with zero: data->line[i] < 0. Reported-by: Abaci Robot Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=6088 Signed-off-by: Jiapeng Chong Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20230803084753.51253-1-jiapeng.chong@linux.alibaba.com Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_men_mcb.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/tty/serial/8250/8250_men_mcb.c b/drivers/tty/serial/8250/8250_men_mcb.c index 5f301195575d..c27c52d18dfa 100644 --- a/drivers/tty/serial/8250/8250_men_mcb.c +++ b/drivers/tty/serial/8250/8250_men_mcb.c @@ -222,11 +222,13 @@ static int serial_8250_men_mcb_probe(struct mcb_device *mdev, + data->offset[i]; /* ok, register the port */ - data->line[i] = serial8250_register_8250_port(&uart); - if (data->line[i] < 0) { + res = serial8250_register_8250_port(&uart); + if (res < 0) { dev_err(&mdev->dev, "unable to register UART port\n"); - return data->line[i]; + return res; } + + data->line[i] = res; dev_info(&mdev->dev, "found MCB UART: ttyS%d\n", data->line[i]); } -- cgit v1.2.3-70-g09d2