Suunto D5 USB interface

[Linus Torvalds]

On Mon, Jan 6, 2020 at 6:02 AM Jef Driesen <jef at libdivecomputer.org> wrote:
>
> I'm afraid this didn't give much more info. It looks like the underlying
> ioctl syscall:
>
>     ioctl(fd, IOCTL_USBFS_CLAIMINTF, &iface);

Ugh, they have their own names for it. The kernel calls it
USBDEVFS_CLAIMINTERFACE.

> failed with EBUSY, and that's about it. There is no clue why it failed.

That just means that somebody else already claimed it. Either some
kernel driver, or (in this case much more likely) another usbfs user.

I wonder what would happen if libdivecomputer would just try to use
the thing regardless.

Because maybe the reason it's busy is that it already got claimed by
the Android "associate app with usb device" logic?

             Linus