> Am 10.05.2019 um 11:35 schrieb Bastien Nocera <hadess@xxxxxxxxxx>: > > On Fri, 2019-05-10 at 11:33 +0200, H. Nikolaus Schaller wrote: >>> > <snip> >> It does through "Input device name:" starting with "iio-bridge:" as >> you can see in the commit message of [RFC v3]: > > This makes it ABI, right? The "Input device name:" is already ABI of the input system (although I guess the string is built into the evtest tool). I think there are also /sys nodes which carry the same information. But yes, if someone changes the "iio-bridge:" prefix in kernel code it breaks a user space lib making use of it: + poll_dev->input->name = kasprintf(GFP_KERNEL, "iio-bridge: %s", + indio_dev->name); + poll_dev->input->phys = kasprintf(GFP_KERNEL, "iio:device%d", + indio_dev->id); This type of exporting names seems to be quite common. E.g. "mmcblk0p1" which may end up in some /etc/fstab. > > Big fat warnings around the code that declares it would be appreciated. Ok.
