On 11/11/2021 2:34 PM, Vladimir Oltean wrote: > On Thu, Nov 11, 2021 at 03:55:29PM -0600, Ed Branch wrote: >> As of commit 380d023abb1fdce0dba9d58ca1abaf2e2de5488f PHC device nodes or >> symlinks named as "/dev/ptp*" where "*" is not a number cause phc2sys to >> fail with "failed to parse PHC index". Note however, if the filename does >> not match this pattern, it happily continues with no PHC index set. > > That would be me and my ts2phc patches. Sorry for that. Prior to that > change, posix_clock_open() used to simply not populate *phc_index when > passed a path to a PHC. I don't think there's any kernel API to deduce > the PHC number using ioctls on the char device itself, so for my use > case it would be pretty odd to have a PTP device named differently than > /dev/ptpN. Nonetheless, phc2sys does not need to know the exact number > of the PTP clock, and therefore, what I can do is move the error one > level upper, at the caller. I'll try to come up with a patch tomorrow. >
There aren't any methods right now, but it is something I have felt would be useful in the past. Perhaps we can add a new field to the PTP_CLOCK_GETCAPS2 ioctl? Or add a new IOCTL which gets this data? I think that would be helpful for more than just this case. Thanks, Jake _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
