parport_ip3...it_interrupt(9)
π parport_ip32_fwp_wait_interrupt(9) β the bestie edit π
okay so picture this: it's the parport_ip32_fwp_wait_interrupt page from the Kernel API Manual, and it's literally about waiting for a FIFO to empty in interrupt-driven mode. yes babes, we're in drivers/parport territory and it's giving β¨niche kernel excellenceβ¨. stay with me, i gotchu π«Ά
πΈ NAME πΈ
parport_ip32_fwp_wait_interrupt β bestie, this one waits for the FIFO to empty, and it does it interrupt-driven. no busy-waiting nonsense here, we're classy π
β¨ SYNOPSIS β¨
unsigned int parport_ip32_fwp_wait_interrupt (struct parport *p );
like, that's the whole call. one pointer, one unsigned int coming back at you π¦
π ARGUMENTS π
pβ pointer tostruct parport. that's it. that's the argument. she's simple, she's iconic π
π₯ DESCRIPTION π₯
so what does it actually do? it returns the number of bytes that can safely be written in the FIFO π literally the count of how much you can shove in there without things going sideways.
and here's the important part, don't skip this: a return value of zero means that the calling function should terminate as fast as possible π like, no cap, zero means wrap it up, exit immediately, do not pass go. it's the "the vibes are off, leave now" signal fr fr π
π SEE ALSO π
the whole friend group came out for this one, so let me introduce everybody π«Ά starting with where she lives:
- Kernel file
./drivers/parport/parport_ip32.cβ structparport_ip32_regs(9) enum parport_ip32_irq_mode(9)struct parport_ip32_private(9)struct parport_ip32_dma_data(9)parport_ip32_dma_setup_context(9)parport_ip32_dma_interrupt(9)parport_ip32_dma_start(9)parport_ip32_dma_stop(9)parport_ip32_dma_get_residue(9)parport_ip32_dma_register(9)parport_ip32_dma_unregister(9)parport_ip32_wakeup(9)parport_ip32_interrupt(9)parport_ip32_read_econtrol(9)parport_ip32_write_econtrol(9)parport_ip32_frob_econtrol(9)parport_ip32_set_mode(9)parport_ip32_read_data(9)parport_ip32_write_data(9)parport_ip32_read_status(9)__parport_ip32_read_control(9)__parport_ip32_write_control(9)__parport_ip32_frob_control(9)parport_ip32_read_control(9)parport_ip32_write_control(9)parport_ip32_frob_control(9)parport_ip32_disable_irq(9)parport_ip32_enable_irq(9)parport_ip32_data_forward(9)parport_ip32_data_reverse(9)parport_ip32_init_state(9)parport_ip32_save_state(9)parport_ip32_restore_state(9)parport_ip32_clear_epp_timeout(9)parport_ip32_epp_read(9)parport_ip32_epp_write(9)parport_ip32_epp_read_data(9)parport_ip32_epp_write_data(9)parport_ip32_epp_read_addr(9)parport_ip32_epp_write_addr(9)parport_ip32_fifo_wait_break(9)parport_ip32_fwp_wait_polling(9)parport_ip32_fifo_write_block_pio(9)parport_ip32_fifo_write_block_dma(9)parport_ip32_fifo_write_block(9)parport_ip32_drain_fifo(9)parport_ip32_get_fifo_residue(9)parport_ip32_compat_write_data(9)parport_ip32_ecp_write_data(9)parport_ip32_ecp_supported(9)parport_ip32_fifo_supported(9)parport_ip32_make_isa_registers(9)parport_ip32_probe_port(9)parport_ip32_unregister_port(9)parport_ip32_init(9)parport_ip32_exit(9)
like i said. the whole group chat ππ
and that's the page bestie!! π she lives in ./drivers/parport, dated October 2026, and she's filed under parport_ip3...it_interrupt(9) β yes the header really does abbreviate it like that, no i don't know why, and yes we love her anyway πβ¨ mwah, go forth and wait for that FIFO to empty π¦π
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms