OS String descriptor can be provided by using FunctionFS with configfs. In order for FunctionFS to support Feature Descriptors, corresponding Extended Compatibility and Extended Properties descriptors must be passed to ep0. This series adds parsing the said descriptors and setting up appropriate internal data structures. Rebased onto Felipe's testing/next. This is meant for 3.17. v1..v2: - changed confused naming of two existing functions - OS descriptors proper implementation with fixes suggested by Michal; thanks, Michal! v2..v3: - introduced helper functions for accessing particular locations within a buffer holding extended properties - fixes after Michal's second review; thanks Michal! Andrzej Pietrasiewicz (3): usb: gadget: f_fs: rename descriptor parsing functions usb: gadget: u_os_desc: helper functions for accessing ext prop buffer usb: gadget: f_fs: OS descriptors support drivers/usb/gadget/function/f_fs.c | 347 ++++++++++++++++++++++++++++++++++-- drivers/usb/gadget/function/u_fs.h | 7 + drivers/usb/gadget/u_os_desc.h | 59 ++++-- include/uapi/linux/usb/functionfs.h | 81 ++++++++- 4 files changed, 468 insertions(+), 26 deletions(-) -- 1.8.3.2 -- 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
