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TTY/Serial driver fix for 5.4-rc5

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Here is a single tty/serial driver fix for 5.4-rc5 that resolves a
 reported issue.
 
 It has been in linux-next for a while with no problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver fix from Greg KH:
 "Here is a single tty/serial driver fix for 5.4-rc5 that resolves a
  reported issue.

  It has been in linux-next for a while with no problems"

* tag 'tty-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  8250-men-mcb: fix error checking when get_num_ports returns -ENODEV
This commit is contained in:
Linus Torvalds 2019-10-26 16:40:04 -04:00
parent 228bd62434 f50b6805db
commit 2976895459
1 changed files with 4 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
drivers/tty/serial/8250/8250_men_mcb.c
View file

@ -72,8 +72,8 @@ static int serial_8250_men_mcb_probe(struct mcb_device *mdev,
{
struct serial_8250_men_mcb_data *data;
struct resource *mem;
unsigned int num_ports;
unsigned int i;
int num_ports;
int i;
void __iomem *membase;
mem = mcb_get_resource(mdev, IORESOURCE_MEM);
@ -88,7 +88,7 @@ static int serial_8250_men_mcb_probe(struct mcb_device *mdev,
dev_dbg(&mdev->dev, "found a 16z%03u with %u ports\n",
mdev->id, num_ports);
if (num_ports == 0 || num_ports > 4) {
if (num_ports <= 0 || num_ports > 4) {
dev_err(&mdev->dev, "unexpected number of ports: %u\n",
num_ports);
return -ENODEV;
@ -133,7 +133,7 @@ static int serial_8250_men_mcb_probe(struct mcb_device *mdev,
static void serial_8250_men_mcb_remove(struct mcb_device *mdev)
{
unsigned int num_ports, i;
int num_ports, i;
struct serial_8250_men_mcb_data *data = mcb_get_drvdata(mdev);
if (!data)