ata_bmdma_stop(9)

💅 ata_bmdma_stop(9) 💅

okay bestie, welcome to the Kernel API Manual — this is the page for ata_bmdma_stop(9), aka the “wrap it up” moment for a PCI IDE BMDMA transfer. 🎀

🌸 NAME 🌸

ata_bmdma_stop — Stop PCI IDE BMDMA transfer

✨ SYNOPSIS ✨

void ata_bmdma_stop (struct ata_queued_cmd *qc );

🫶 ARGUMENTS 🫶

• qc — Command we are ending DMA for

💖 DESCRIPTION 💖

So what does it actually do? It clears the ATA_DMA_START flag in the dma control register. That's the move, no cap. ✨

It may be used as the bmdma_stop entry in ata_port_operations.

LOCKING: spin_lock_irqsave(host lock)

🔒 bestie, the locking line is literally right there — spin_lock_irqsave(host lock) — don't ignore it. 💅

👑 SEE ALSO 👑

Kernel file ./drivers/ata/libata-sff.c — plus the whole iconic friend group: ata_sff_check_status(9), ata_sff_altstatus(9), ata_sff_irq_status(9), ata_sff_sync(9), ata_sff_pause(9), ata_sff_dma_pause(9), ata_sff_wait_ready(9), ata_sff_set_devctl(9), ata_sff_dev_select(9), ata_dev_select(9), ata_sff_irq_on(9), ata_sff_tf_load(9), ata_sff_tf_read(9), ata_sff_exec_command(9), ata_tf_to_host(9), ata_sff_data_xfer(9), ata_sff_data_xfer32(9), ata_pio_sector(9), ata_pio_sectors(9), atapi_send_cdb(9), __atapi_pio_bytes(9), atapi_pio_bytes(9), ata_hsm_ok_in_wq(9), ata_hsm_qc_complete(9), ata_sff_hsm_move(9), ata_sff_qc_issue(9), ata_sff_qc_fill_rtf(9), ata_sff_port_intr(9), ata_sff_interrupt(9), ata_sff_lost_interrupt(9), ata_sff_freeze(9), ata_sff_thaw(9), ata_sff_prereset(9), ata_devchk(9), ata_sff_dev_classify(9), ata_sff_wait_after_reset(9), ata_sff_softreset(9), sata_sff_hardreset(9), ata_sff_postreset(9), ata_sff_drain_fifo(9), ata_sff_error_handler(9), ata_sff_std_ports(9), ata_pci_sff_init_host(9), ata_pci_sff_prepare_host(9), ata_pci_sff_activate_host(9), ata_pci_sff_init_one(9), ata_bmdma_fill_sg(9), ata_bmdma_fill_sg_dumb(9), ata_bmdma_qc_prep(9), ata_bmdma_dumb_qc_prep(9), ata_bmdma_qc_issue(9), ata_bmdma_port_intr(9), ata_bmdma_interrupt(9), ata_bmdma_error_handler(9), ata_bmdma_post_internal_cmd(9), ata_bmdma_irq_clear(9), ata_bmdma_setup(9), ata_bmdma_start(9), ata_bmdma_status(9), ata_bmdma_port_start(9), ata_bmdma_port_start32(9), ata_pci_bmdma_clear_simplex(9), ata_pci_bmdma_init(9), ata_pci_bmdma_prepare_host(9), ata_pci_bmdma_init_one(9), ata_sff_port_init(9).

mwah 💋 — this page comes from ./drivers/ata, dated October 2026. bye bestie! 🦋