Here is the patch set I proposed in https://www.spinics.net/lists/linux-usb/msg167533.html. Vendor specific control requests are a significant category of USB communications. With the current framework, it is difficult for a composite gadget to handle these requests since any function could be active. This patchset/feature allows all unhandled control requests to be passed to a singular functionfs instance regardless of active configuration. Patch 1 fixes an f_fs bug, patch 2 implements this feature, and patch 3 adds user facing documentation and examples. Tested on 4.9. Jerry Zhang (3): usb: gadget: f_fs: Only return delayed status when len is 0 usb: gadget: configfs: Create control_config group Documentation: usb: Add docs for configfs control requests Documentation/usb/gadget_configfs.txt | 32 ++++++++++ drivers/usb/gadget/configfs.c | 86 +++++++++++++++++++++------ drivers/usb/gadget/function/f_fs.c | 2 +- 3 files changed, 101 insertions(+), 19 deletions(-) -- 2.17.0.484.g0c8726318c-goog -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
