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synapticsmst: filter invalid chip IDs

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This device was showing up from a LG 38UC99-W USB-C monitor
```
VMM0000:
      Device ID:           d762543f8c20f636e6fff031a000078d3e10c600
      Summary:             Multi-Stream Transport Device
      Current version:     0.00.000
      Vendor:              Synaptics
      GUIDs:               42addef4-40f9-5e89-b925-d564e35ed368 ← MST-(null)-vmm0000-0
                           cf8c03c5-18bf-53c4-971f-4a08f88932b5 ← MST-(null)-0
                           e9427b6a-7389-5461-a592-1da5f8ec99fd ← MST-(null)
      Device Flags:        • Updatable
```
This commit is contained in:
Mario Limonciello 2019-11-08 09:24:13 -06:00 committed by Mario Limonciello
parent 2414f24b8a
commit 5151aa5222
1 changed files with 7 additions and 0 deletions
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7
plugins/synapticsmst/fu-synapticsmst-device.c
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@ -1047,6 +1047,13 @@ fu_synapticsmst_device_rescan (FuDevice *device, GError **error)
return FALSE;
}
self->chip_id = (buf_ver[0] << 8) | (buf_ver[1]);
if (self->chip_id == 0) {
g_set_error_literal (error,
G_IO_ERROR,
G_IO_ERROR_INVALID_DATA,
"invalid chip ID");
return FALSE;
}
self->family = fu_synapticsmst_family_from_chip_id (self->chip_id);
/* check the active bank for debugging */