[LTP] [PATCH net v1] ptp: Make max_phase_adjustment sysfs device attribute invisible when not supported

[Richard Cochran]

On Tue, Jun 27, 2023 at 04:21:39PM -0700, Rahul Rameshbabu wrote:
> The .adjphase operation is an operation that is implemented only by certain
> PHCs. The sysfs device attribute node for querying the maximum phase
> adjustment supported should not be exposed on devices that do not support
> .adjphase.
> 
> Fixes: c3b60ab7a4df ("ptp: Add .getmaxphase callback to ptp_clock_info")
> Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
> Reported-by: Nathan Chancellor <nathan@kernel.org>
> Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
> Link: https://lore.kernel.org/netdev/20230627162146.GA114473@dev-arch.thelio-3990X/
> Link: https://lore.kernel.org/all/CA+G9fYtKCZeAUTtwe69iK8Xcz1mOKQzwcy49wd+imZrfj6ifXA@mail.gmail.com/

Acked-by: Richard Cochran <richardcochran@gmail.com>