gpio-exar/8250-exar: Do not even instantiate a GPIO device for Commtech cards

Commtech adapters need the MPIOs for internal purposes, and the
gpio-exar driver already refused to pick them up. But there is actually
no point in even creating the underlying platform device.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2 files changed, 3 insertions, 4 deletions

diff --git a/drivers/gpio/gpio-exar.c b/drivers/gpio/gpio-exar.c
index 4b46273ca545..139d54008ad0 100644
--- a/drivers/gpio/gpio-exar.c
+++ b/drivers/gpio/gpio-exar.c
@@ -124,9 +124,6 @@ static int gpio_exar_probe(struct platform_device *pdev)
         void __iomem *p;
         int index, ret;
 
-        if (pcidev->vendor != PCI_VENDOR_ID_EXAR)
-                return -ENODEV;
-
         /*
          * Map the pci device to get the register addresses.
          * We will need to read and write those registers to control
diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
index 2adc0f1a2196..36877c8ad652 100644
--- a/drivers/tty/serial/8250/8250_exar.c
+++ b/drivers/tty/serial/8250/8250_exar.c
@@ -239,7 +239,9 @@ pci_xr17v35x_setup(struct exar8250 *priv, struct pci_dev *pcidev,
                 /* Setup Multipurpose Input/Output pins. */
                 setup_gpio(p);
 
-                port->port.private_data = xr17v35x_register_gpio(pcidev);
+                if (pcidev->vendor == PCI_VENDOR_ID_EXAR)
+                        port->port.private_data =
+                                xr17v35x_register_gpio(pcidev);
         }
 
         return 0;