8250_pci: add support for netmos 9835 IBM devices

Most of netmos 9835 hardware is handled by parport-serial.  IBM introduces
a device which doesn't have any parallel ports and have screwed subdevice
PCI id (not corresponding to port numbers).

Handle this device (9710:9835 1014:0299) properly.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c
index c088146b7513..2a3671233b15 100644
--- a/drivers/serial/8250_pci.c
+++ b/drivers/serial/8250_pci.c
@@ -602,6 +602,10 @@ static int pci_netmos_init(struct pci_dev *dev)
         /* subdevice 0x00PS means <P> parallel, <S> serial */
         unsigned int num_serial = dev->subsystem_device & 0xf;
 
+        if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM &&
+                        dev->subsystem_device == 0x0299)
+                return 0;
+
         if (num_serial == 0)
                 return -ENODEV;
         return num_serial;
@@ -3096,6 +3100,10 @@ static struct pci_device_id serial_pci_tbl[] = {
                 0,
                 pbn_b0_8_115200 },
 
+        {       PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9835,
+                PCI_VENDOR_ID_IBM, 0x0299,
+                0, 0, pbn_b0_bt_2_115200 },
+
         /*
          * These entries match devices with class COMMUNICATION_SERIAL,
          * COMMUNICATION_MODEM or COMMUNICATION_MULTISERIAL