Hello Greg, On 13.09.2022 16:03:49, Greg Kroah-Hartman wrote: > From: Csókás Bence > > [ Upstream commit b353b241f1eb9b6265358ffbe2632fdcb563354f ] > > Mutexes cannot be taken in a non-preemptible context, > causing a panic in `fec_ptp_save_state()`. Replacing > `ptp_clk_mutex` by `tmreg_lock` fixes this. > > Fixes: 6a4d7234ae9a ("net: fec: ptp: avoid register access when ipg clock is disabled") > Fixes: f79959220fa5 ("fec: Restart PPS after link state change") > Reported-by: Marc Kleine-Budde > Link: https://lore.kernel.org/all/20220827160922.642zlcd5foopozru@pengutronix.de/ > Signed-off-by: Csókás Bence > Tested-by: Francesco Dolcini # Toradex Apalis iMX6 > Link: https://lore.kernel.org/r/20220901140402.64804-1-csokas.bence@prolan.hu > Signed-off-by: Jakub Kicinski > Signed-off-by: Sasha Levin there's a revert pending for this patch: | https://lore.kernel.org/all/20220912070143.98153-1-francesco.dolcini@toradex.com ...as it causes troubles in 6.0-rc4: | https://lore.kernel.org/all/20220907143915.5w65kainpykfobte@pengutronix.de/ | https://lore.kernel.org/all/CAHk-=wj1obPoTu1AHj9Bd_BGYjdjDyPP+vT5WMj8eheb3A9WHw@mail.gmail.com/ please drop this patch. regards, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |