Hoi,
no there wasn't a kernel side discussion; On a system where chrony is running it holds the rtc device/file-handle, e.g. has exclusive access and manages the RTC -> there are no other applications reading/handling the RTC. So this patch adds the missing "userspace handling" for this uninitialized RTC corner case. gruß Johannes ________________________________________ From: Miroslav Lichvar <mlich...@redhat.com> Sent: Monday, July 1, 2024 09:44 To: chrony-dev@chrony.tuxfamily.org Subject: Re: [chrony-dev] [PATCH v1] rtc: handle uninitialized RTC [You don't often get email from mlich...@redhat.com. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ] This email is not from Hexagon’s Office 365 instance. Please be careful while clicking links, opening attachments, or replying to this email. On Sun, Jun 30, 2024 at 05:04:00PM +0200, Johannes Schneider wrote: > Add a configuration option for an "initialization year/timestamp" > chornyd can use to start an uninitialized RTC, so that the RTC driver > can continue its start up, and chrony could later trim the RTC to an > accurate date. > > Without this 'kick-off', on systems where the RTC would return -EINVAL > when being queried either for features, or just being read, chronyd > would be unable to start the RTC driver ("513 RTC driver not running") > and hence could/would not set it. > > An example RTC where this is the case is RX8130 (of the ds1307 > family), which would return -EINVAL *until* the internal oscillator is > started by writing a valid date to it. Wouldn't all applications reading RTC need this patch? I think this should be addressed in the kernel driver instead. Was there a discussion about that? -- Miroslav Lichvar -- To unsubscribe email chrony-dev-requ...@chrony.tuxfamily.org with "unsubscribe" in the subject. For help email chrony-dev-requ...@chrony.tuxfamily.org with "help" in the subject. Trouble? Email listmas...@chrony.tuxfamily.org. -- To unsubscribe email chrony-dev-requ...@chrony.tuxfamily.org with "unsubscribe" in the subject. For help email chrony-dev-requ...@chrony.tuxfamily.org with "help" in the subject. Trouble? Email listmas...@chrony.tuxfamily.org.
