serial: 8250_pci: add .probe member to struct pci_serial_quirk
Frédéric Brière [Sun, 29 May 2011 19:08:03 +0000 (15:08 -0400)]
This function, if present, is called early on by the 8250_pci probe; it
can be used to reject devices meant for parport_serial.  (The .init
function cannot be used for this purpose, as it is also called by
parport_serial.)

Signed-off-by: Frédéric Brière <fbriere@fbriere.net>
Acked-by: Alan Cox <alan@linux.intel.com>
Cc: linux-serial@vger.kernel.org
Cc: linux-parport@lists.infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/tty/serial/8250_pci.c

index 0b255ce..9b119fe 100644 (file)
@@ -39,6 +39,7 @@ struct pci_serial_quirk {
        u32     device;
        u32     subvendor;
        u32     subdevice;
+       int     (*probe)(struct pci_dev *dev);
        int     (*init)(struct pci_dev *dev);
        int     (*setup)(struct serial_private *,
                         const struct pciserial_board *,
@@ -2662,11 +2663,19 @@ EXPORT_SYMBOL_GPL(pciserial_resume_ports);
 static int __devinit
 pciserial_init_one(struct pci_dev *dev, const struct pci_device_id *ent)
 {
+       struct pci_serial_quirk *quirk;
        struct serial_private *priv;
        const struct pciserial_board *board;
        struct pciserial_board tmp;
        int rc;
 
+       quirk = find_quirk(dev);
+       if (quirk->probe) {
+               rc = quirk->probe(dev);
+               if (rc)
+                       return rc;
+       }
+
        if (ent->driver_data >= ARRAY_SIZE(pci_boards)) {
                printk(KERN_ERR "pci_init_one: invalid driver_data: %ld\n",
                        ent->driver_data);