viafb: Autoload on OLPC XO 1.5 only

It appears that viafb won't work automatically on all the boards for
which it has a PCI device ID match.  Currently, it is blacklisted by
udev along with most other framebuffer drivers, so this doesn't matter
much.

However, this driver is required for console support on the XO 1.5.
We need to allow it to be autoloaded on this model only, and then
un-blacklist it in udev.

Gbp-Pq: Topic bugfix/x86
Gbp-Pq: Name viafb-autoload-on-olpc-xo1.5-only.patch

diff --git a/drivers/video/fbdev/via/via-core.c b/drivers/video/fbdev/via/via-core.c
index b041eb27a9bff7aac488968306c83102b6c4edfd..fb59ae50759f8ec0669072316198f154ef00e0fa 100644 (file)
--- a/drivers/video/fbdev/via/via-core.c
+++ b/drivers/video/fbdev/via/via-core.c
@@ -752,7 +752,14 @@ static const struct pci_device_id via_pci_table[] = {
          .driver_data = UNICHROME_VX900 },
        { }
 };
-MODULE_DEVICE_TABLE(pci, via_pci_table);
+
+static const struct pci_device_id via_pci_autoload_table[] __initconst = {
+       /* OLPC XO 1.5 */
+       { PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_VX855_DID),
+         .subvendor = 0x152d, .subdevice = 0x0833 },
+       { }
+};
+MODULE_DEVICE_TABLE(pci, via_pci_autoload_table);
 
 static struct pci_driver via_driver = {
        .name           = "viafb",