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Aleksandrova AlyonaandGreg Kroah-Hartman
9952291db7
[ Upstream commitaee5836273] pin_duration is converted from the user-provided period to SJA1105 clock ticks and is later passed as the cycle_time argument to future_base_time(). Very small period values may become zero after the conversion, which can lead to a division by zero in future_base_time(). Round zero pin_duration up to 1 tick so that the smallest unsupported periods use the minimum non-zero hardware duration instead of passing zero to future_base_time(). Fixes:747e5eb31d("net: dsa: sja1105: configure the PTP_CLK pin as EXT_TS or PER_OUT") Signed-off-by: Aleksandrova Alyona <aga@itb.spb.ru> Link: https://patch.msgid.link/20260618110508.53094-1-aga@itb.spb.ru Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>