gsmld_poll(9)

💅✨ gsmld_poll(9) — Kernel API Manual energy 🎀

okay so bestie, we’re in the Kernel API Manual and this page is gsmld_poll(9) — literally the poll method for N_GSM0710. no cap, she’s niche but she matters 💖.

🌸 NAME 🌸

gsmld_poll — poll method for N_GSM0710. periodt ✨

🦋 SYNOPSIS 🦋

the signature is giving “kernel function realness”:

__poll_t gsmld_poll (struct tty_struct *tty , struct file *file ,
       poll_table *wait );

🎀 ARGUMENTS 🎀

• tty — terminal device, aka the terminal bestie 🖥️
• file — file accessing it 📁
• wait — poll table, the waiting-room energy ⏳

✨ DESCRIPTION ✨

okay so this one is called when the line discipline is asked to poll for data or for special events. not me being summoned for data or special events 👀.

this code is not serialized with respect to other events save open/close. so yeah, concurrency girlies, take note 🫶.

this code must be sure never to sleep through a hangup. like, literally, do not snooze through the hangup 😭.

called without the kernel lock held - fine ✅.

🔥 SEE ALSO 🔥

Kernel file ./drivers/tty/n_gsm.c is where the whole squad lives. here’s every single reference, because we do not gatekeep 💅:

• gsm_fcs_add(9), gsm_fcs_add_block(9), gsm_read_ea(9), gsm_read_ea_val(9), gsm_encode_modem(9), gsm_encode_params(9), gsm_register_devices(9), gsm_unregister_devices(9), gsm_print_packet(9), gsm_stuff_frame(9), gsm_send(9), gsm_dlci_clear_queues(9), gsm_response(9), gsm_command(9), gsm_data_alloc(9), gsm_send_packet(9), gsm_is_flow_ctrl_msg(9), gsm_data_kick(9), __gsm_data_queue(9), gsm_data_queue(9)
• gsm_dlci_data_output(9), gsm_dlci_data_output_framed(9), gsm_dlci_modem_output(9), gsm_dlci_data_sweep(9), gsm_dlci_data_kick(9), gsm_control_command(9), gsm_control_reply(9), gsm_process_modem(9), gsm_process_negotiation(9), gsm_control_modem(9), gsm_control_negotiation(9), gsm_control_rls(9), gsm_control_message(9), gsm_control_response(9), gsm_control_keep_alive(9), gsm_control_transmit(9), gsm_control_retransmit(9), gsm_control_send(9), gsm_control_wait(9)
• gsm_dlci_close(9), gsm_dlci_open(9), gsm_dlci_negotiate(9), gsm_dlci_t1(9), gsm_dlci_begin_open(9), gsm_dlci_set_opening(9), gsm_dlci_set_wait_config(9), gsm_dlci_begin_close(9), gsm_dlci_data(9), gsm_dlci_command(9), gsm_kick_timer(9), gsm_dlci_copy_config_values(9), gsm_dlci_config(9), gsm_dlci_alloc(9), gsm_dlci_free(9), gsm_dlci_release(9), gsm_queue(9), gsm0_receive_state_check_and_fix(9), gsm0_receive(9), gsm1_receive_state_check_and_fix(9), gsm1_receive(9), gsm_error(9), gsm_cleanup_mux(9), gsm_activate_mux(9), gsm_free_mux(9), gsm_free_muxr(9), gsm_alloc_mux(9)
• gsmld_output(9), gsmld_write_trigger(9), gsmld_write_task(9), gsmld_attach_gsm(9), gsmld_detach_gsm(9), gsmld_flush_buffer(9), gsmld_close(9), gsmld_open(9), gsmld_write_wakeup(9), gsmld_read(9), gsmld_write(9), gsm_modem_upd_via_data(9), gsm_modem_upd_via_msc(9), gsm_modem_update(9), gsm_wait_modem_change(9)

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byeee bestie 🫶 this whole thing comes from ./drivers/tty, dated October 2026, and the page is literally gsmld_poll(9). stay hydrated, don’t sleep through a hangup, and slay your polls 💖✨🎀