Linux-USB Archive on lore.kernel.org
 help / color / Atom feed
From: "Andrew P. Lentvorski" <bsder@allcaps.org>
To: linux-usb@vger.kernel.org
Subject: Unable to set "iInterface" in usb gadget via configfs
Date: Tue, 14 Jan 2020 15:58:07 -0800
Message-ID: <994f33ae-fa5f-460c-67c8-92fc5352ebae@allcaps.org> (raw)

I've been trying to report what I think is a bug, but I can't seem to
get through to the mailing list.  If these are coming through
duplicated, please let me know so I can quit sending them.

Thanks,
-a


> I've been trying to set "iInterface" in my usb gadget to a specific string, but I simply can't find a way to make configfs accept this.
> 
> When I set my gadget up on my Beaglebone Black (uname -a: Linux beaglebone 4.14.108-ti-r113 #1 SMP PREEMPT Wed Jul 31 00:01:10 UTC 2019 armv7l GNU/Linux).
> 
> I get (output from lsusb):
> 
> iInterface 5 HID Interface
> 
> 
> But I want it to be something like:
> 
> iInterface 4 LPC-LINK2 CMSIS-DAP V5.224
> 
> 
> This seems to be wired up as a fixed value in f_hid.c and doesn't seem to have a corresponding way to actually change it via configfs.
> 
> 
> #define CT_FUNC_HID_IDX 0
> 
> static struct usb_string ct_func_string_defs[] = {
>         [CT_FUNC_HID_IDX].s     = "HID Interface",
>         {},                     /* end of list */
> };
>  
> 
> Thanks,
> 
> -a
> 


             reply index

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-14 23:58 Andrew P. Lentvorski [this message]
2020-01-15 15:14 ` Alan Stern
2020-01-16  2:23   ` Andrew P. Lentvorski
2020-01-16 13:02     ` Felipe Balbi
2020-01-17  0:39       ` Andrew P. Lentvorski
2020-01-17  9:25         ` Felipe Balbi
2020-01-18  0:58           ` Andrew P. Lentvorski
2020-01-19 16:45             ` Felipe Balbi

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=994f33ae-fa5f-460c-67c8-92fc5352ebae@allcaps.org \
    --to=bsder@allcaps.org \
    --cc=linux-usb@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-USB Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-usb/0 linux-usb/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-usb linux-usb/ https://lore.kernel.org/linux-usb \
		linux-usb@vger.kernel.org
	public-inbox-index linux-usb

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-usb


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git