When writing the descriptors to the ep0 file of functionfs, the HID descriptors where not recognized which caused the initialization from user space to fail. Signed-off-by: Koen Beel <koen.beel@xxxxxxxxx> --- drivers/usb/gadget/f_fs.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index dcd1c7f..8adc79d 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -21,6 +21,7 @@ #include <linux/blkdev.h> #include <linux/pagemap.h> #include <linux/export.h> +#include <linux/hid.h> #include <asm/unaligned.h> #include <linux/usb/composite.h> @@ -1671,6 +1672,12 @@ static int __must_check ffs_do_desc(char *data, unsigned len, } break; + case HID_DT_HID: + pr_vdebug("hid descriptor\n"); + if (length != sizeof(struct hid_descriptor)) + goto inv_length; + break; + case USB_DT_OTG: if (length != sizeof(struct usb_otg_descriptor)) goto inv_length; -- 1.7.9.5 -- 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