On Fri, Feb 28, 2025 at 06:45:15AM +0100, Salvatore Bonaccorso wrote: > Hi > > A user in Debian reported quite a long back an issue that after the > update to the 5.18 version but present still up to recent kernel > versions his SP5100/SB800 TCO WatchDog would not work anymore. > > The report is at: https://bugs.debian.org/1054231 > > > Hello. WatchDog broken since version 5.17. Kernel write an error to syslog. > > Tested versions: 5.10, 5.15, 5.16, 5.17, 5.19, 6.1, 6.5. > > > > From syslog: > > KERNEL 5.16 (and lower) > > Oct 19 12:24:12 debian-gateway kernel: Linux version 5.16.0-6-amd64 (debian-kernel@xxxxxxxxxxxxxxxx) (gcc-11 (Debian 11.2.0-19) 11.2.0, GNU ld (GNU Binutils for Debian) 2.38) #1 SMP PREEMPT Debian 5.16.18-1 (2022-03-29) > > ... > > Oct 19 12:24:13 debian-gateway kernel: sp5100_tco: SP5100/SB800 TCO WatchDog Timer Driver > > > > KERNEL 5.17 (and higher) > > Oct 18 20:36:00 debian-gateway kernel: Linux version 5.17.0-3-amd64 (debian-kernel@xxxxxxxxxxxxxxxx) (gcc-11 (Debian 11.3.0-3) 11.3.0, GNU ld (GNU Binutils for Debian) 2.38) #1 SMP PREEMPT Debian 5.17.11-1 (2022-05-26) > > ... > > Oct 18 20:36:01 debian-gateway kernel: sp5100_tco: SP5100/SB800 TCO WatchDog Timer Driver > > Oct 18 20:36:01 debian-gateway kernel: sp5100-tco sp5100-tco: Failed to reserve MMIO or alternate MMIO region > > Oct 18 20:36:01 debian-gateway kernel: sp5100-tco: probe of sp5100-tco failed with error -16 > > I had a look only recently at open bugs which were stalled in Debian > and had a look at upstrema changes, and I'm not sure if this was a > kernel problem at all an the change is introduced around > > > 5559598742fb ("drm/amd/display: Pass non-null to dcn20_validate_apply_pipe_split_flags") > (https://git.kernel.org/linus/1f182aca230086d4a4469c0f9136a6ea762d6385) > which is 5.18-rc1 and got backported to 5.17.10 and 5.15.42. And me failing twice in a row, the above should clearly be 1f182aca2300 ("Watchdog: sp5100_tco: Refactor MMIO base address initialization"). > The reporter confirmed that the problem does not show up with the old > packaged image we can get from the snapshots archive 5.7.6-1 but > happends reconfirmed with 6.7.11-1 and say there are no MMIO related > settings to adjust in BIOS. > > Does the above ring some bell? > > Regards, > Salvatore Regards, Salvatore
