mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-08-28 20:02:17 +00:00
Code Issues Releases Wiki Activity

8250-men-mcb: fix signed/unsigned confusion

Browse source 
get_num_ports returns -ENODEV, and the result is stored in int, so it
should not be unsigned. Zero ports does not seem to make sense, so
make that check consistent.

Signed-off-by: Pavel Machek (CIP) <pavel@denx.de>

Link: https://lore.kernel.org/r/20200606151146.GA10940@amd
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pavel Machek 2020-06-06 17:11:46 +02:00 committed by Greg Kroah-Hartman
parent 167cbce274
commit 894b867ac9
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/tty/serial/8250/8250_men_mcb.c
View file

@ -51,7 +51,7 @@ static u32 men_lookup_uartclk(struct mcb_device *mdev)
return clkval;
}
static unsigned int get_num_ports(struct mcb_device *mdev,
static int get_num_ports(struct mcb_device *mdev,
void __iomem *membase)
{
switch (mdev->id) {
@ -140,7 +140,7 @@ static void serial_8250_men_mcb_remove(struct mcb_device *mdev)
return;
num_ports = get_num_ports(mdev, data[0].uart.port.membase);
if (num_ports < 0 || num_ports > 4) {
if (num_ports <= 0 || num_ports > 4) {
dev_err(&mdev->dev, "error retrieving number of ports!\n");
return;
}