idpf_ptp_upd...ched_phctime(9)

💅 idpf_ptp_update_cached_phctime — Kernel API Manual realness ✨

okay so bestie, welcome to the idpf_ptp_upd...ched_phctime(9) page 💖 yes the name is a whole mouthful, the kernel API manual really said "let's abbreviate it and hope for the best" 😭 anyway she's iconic, let's get into it.

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🌸 NAME 🌸

idpf_ptp_update_cached_phctime — Update the cached PHC time values ⏰✨

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🎀 SYNOPSIS 🎀

int idpf_ptp_update_cached_phctime (struct idpf_adapter *adapter );

like, that's the whole signature. short king. 👑

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🦋 ARGUMENTS 🦋

• adapter — Driver specific private structure 🫶 that's the driver's own little private stash of data, no cap.

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✨ DESCRIPTION ✨

okay so what she does: this function updates the system time values that are cached inside the adapter structure and in the Rx queues 💫 like she's going around refreshing everybody's cached clock, very generous of her, main character energy fr.

⚠️ big one, bestie: this function must be called periodically so the cached value is never more than 2 seconds old. not two minutes, not "whenever you remember" — 2 seconds. periodt. 🕐💀

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🔥 RETURN 🔥

• 0 on success 🎉 slay
• -errno otherwise 😭 (the classic kernel "something went sideways, check your errno" vibe)

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👑 SEE ALSO 👑

• Kernel file ./drivers/net/ethernet/intel/idpf/idpf_ptp.c 📁
• idpf_ptp_get_access(9)
• idpf_ptp_get_features_access(9)
• idpf_ptp_enable_shtime(9)
• idpf_ptp_read_src_clk_reg_direct(9)
• idpf_ptp_read_src_clk_reg_mailbox(9)
• idpf_ptp_read_src_clk_reg(9)
• idpf_ptp_get_sync_device_time_direct(9)
• idpf_ptp_get_sync_device_time_mailbox(9)
• idpf_ptp_get_sync_device_time(9)
• idpf_ptp_get_crosststamp(9)
• idpf_ptp_gettimex64(9)
• idpf_ptp_update_phctime_rxq_grp(9)
• idpf_ptp_settime64(9)
• idpf_ptp_adjtime_nonatomic(9)
• idpf_ptp_adjtime(9)
• idpf_ptp_adjfine(9)
• idpf_ptp_verify_pin(9)
• idpf_ptp_gpio_enable(9)
• idpf_ptp_tstamp_extend_32b_to_64b(9)
• idpf_ptp_extend_ts(9)
• idpf_ptp_request_ts(9)
• idpf_ptp_set_rx_tstamp(9)
• idpf_ptp_set_timestamp_mode(9)
• idpf_tstamp_task(9)
• idpf_ptp_do_aux_work(9)
• idpf_ptp_set_caps(9)
• idpf_ptp_create_clock(9)
• idpf_ptp_release_vport_tstamp(9)
• idpf_ptp_release_tstamp(9)
• idpf_ptp_get_txq_tstamp_capability(9)
• idpf_ptp_init(9)
• idpf_ptp_release(9)

like, that's the whole friend group right there 🫂💜 go read them too, iykyk.

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mwah 💋 that's the page! sourced from ./drivers/net/ethernet/intel/idpf, dated October 2026 — she's serving kernel API manual realness and honestly? obsessed. 🌈⭐💅