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| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-06-25 09:52:59 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-06-25 09:52:59 +0100 |
| commit | d1e16c1a61d68692dba346f4a841315343b085f4 (patch) | |
| tree | 249ec07d1489769fe83b4ec507708455cc0c5138 /drivers/gpu/drm/udl/udl_drv.c | |
| parent | 1573ee81cb9ef24fa5acee6b7442e215e63ede2f (diff) | |
| parent | 6b16351acbd415e66ba16bf7d473ece1574cf0bc (diff) | |
Merge tag 'v3.5-rc4' into for-3.6
Linux 3.5-rc4 contains some bug fixes which overlap with new features.
Diffstat (limited to 'drivers/gpu/drm/udl/udl_drv.c')
| -rw-r--r-- | drivers/gpu/drm/udl/udl_drv.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c index 4d02c46a9420..6e52069894b3 100644 --- a/drivers/gpu/drm/udl/udl_drv.c +++ b/drivers/gpu/drm/udl/udl_drv.c @@ -13,8 +13,21 @@ static struct drm_driver driver; +/* + * There are many DisplayLink-based graphics products, all with unique PIDs. + * So we match on DisplayLink's VID + Vendor-Defined Interface Class (0xff) + * We also require a match on SubClass (0x00) and Protocol (0x00), + * which is compatible with all known USB 2.0 era graphics chips and firmware, + * but allows DisplayLink to increment those for any future incompatible chips + */ static struct usb_device_id id_table[] = { - {.idVendor = 0x17e9, .match_flags = USB_DEVICE_ID_MATCH_VENDOR,}, + {.idVendor = 0x17e9, .bInterfaceClass = 0xff, + .bInterfaceSubClass = 0x00, + .bInterfaceProtocol = 0x00, + .match_flags = USB_DEVICE_ID_MATCH_VENDOR | + USB_DEVICE_ID_MATCH_INT_CLASS | + USB_DEVICE_ID_MATCH_INT_SUBCLASS | + USB_DEVICE_ID_MATCH_INT_PROTOCOL,}, {}, }; MODULE_DEVICE_TABLE(usb, id_table); |