It's possible that during ->exit() the private_data is NULL,
for instance when there was no GPIO device instantiated.
Due to this we may not dereference it. Add a respective check.
Note, for now ->exit() only makes sense when GPIO device
was instantiated, that's why we may use the check for entire
function.
Fixes: 81171e7d31a6 ("serial: 8250_exar: Constify the software nodes")
Reported-by: Maxim Levitsky <mlevitsk@xxxxxxxxxx>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
drivers/tty/serial/8250/8250_exar.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
index 2f49c580139b..bd4e9f6ac29c 100644
--- a/drivers/tty/serial/8250/8250_exar.c
+++ b/drivers/tty/serial/8250/8250_exar.c
@@ -553,7 +553,11 @@ static void pci_xr17v35x_exit(struct pci_dev *pcidev)
{
struct exar8250 *priv = pci_get_drvdata(pcidev);
struct uart_8250_port *port = serial8250_get_port(priv->line[0]);
- struct platform_device *pdev = port->port.private_data;
+ struct platform_device *pdev;
+
+ pdev = port->port.private_data;
+ if (!pdev)
+ return;
device_remove_software_node(&pdev->dev);
platform_device_unregister(pdev);
--
2.30.2
