diff options
| author | Mans Rullgard <mans@mansr.com> | 2019-02-19 14:52:26 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-20 11:29:01 +0100 |
| commit | 01fdf179f4b064d4c9d30b39aba178caf32649f4 (patch) | |
| tree | 5650c0f700cdc45b7d1a9754dcbcc4d5fa276565 /drivers/usb | |
| parent | eb76b37aaf7e6bdd6638bf5b2ef29688645e03b8 (diff) | |
usb: core: skip interfaces disabled in devicetree
If an interface has an associated devicetree node with status disabled,
do not register the device. This is useful for boards with a built-in
multifunction USB device where some functions are broken or otherwise
undesired.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/core/message.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 4f33eb632a88..82239f27c4cc 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -2006,6 +2006,13 @@ free_interfaces: for (i = 0; i < nintf; ++i) { struct usb_interface *intf = cp->interface[i]; + if (intf->dev.of_node && + !of_device_is_available(intf->dev.of_node)) { + dev_info(&dev->dev, "skipping disabled interface %d\n", + intf->cur_altsetting->desc.bInterfaceNumber); + continue; + } + dev_dbg(&dev->dev, "adding %s (config #%d, interface %d)\n", dev_name(&intf->dev), configuration, |