usb: gadget: udc-core: allow udc class register gadget device

Currently all UDC drivers are calling
device_register() before calling
usb_add_gadget_udc(). In order to avoid
code duplication, we can allow udc-core.c
register that device.

However that would become a really large patch,
so to cope with the meanwhile and allow us
to write bite-sized patches, we're adding
a flag which will be set by UDC driver once
it removes the code for registering the
gadget device.

Once all are converted, the new flag will
be removed.

Reviewed-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index 2e297e80d59a..fcd9ef8d3f70 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -494,6 +494,9 @@ struct usb_gadget_ops {
  *      only supports HNP on a different root port.
  * @b_hnp_enable: OTG device feature flag, indicating that the A-Host
  *      enabled HNP support.
+ * @register_my_device: Flag telling udc-core that UDC driver didn't
+ *      register the gadget device to the driver model. Temporary until
+ *      all UDC drivers are fixed up properly.
  * @name: Identifies the controller hardware type.  Used in diagnostics
  *      and sometimes configuration.
  * @dev: Driver model state for this abstract device.
@@ -531,6 +534,7 @@ struct usb_gadget {
         unsigned                        b_hnp_enable:1;
         unsigned                        a_hnp_support:1;
         unsigned                        a_alt_hnp_support:1;
+        unsigned                        register_my_device:1;
         const char                      *name;
         struct device                   dev;
         unsigned                        out_epnum;