ishtp_use_dma_transfer(9)

💅 ishtp_use_dma_transfer(9) — like, the Kernel API Manual page, bestie ✨

okay so this is a page from the Kernel API Manual and honestly it's a short one but it's important, so stay with me 🫶

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🌸 NAME 🌸

ishtp_use_dma_transfer — the function that tells you whether DMA is a thing we're doing 💫

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✨ SYNOPSIS ✨

int ishtp_use_dma_transfer (void );

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🎀 ARGUMENTS 🎀

• void — no arguments. none. zero. the void is voiding 🙈 nothing goes in, that's the whole vibe.

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🦋 DESCRIPTION 🦋

so this interface exists to enable usage of DMA — like, that's literally its job 🔥

it returns non zero if DMA can be enabled 👑 so if you call it and get something back that isn't zero, that's your green light, that's the slay, go ahead and DMA bestie 💖

lowkey a very small manpage but like... the confidence? immaculate 💅

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🔍 SEE ALSO 🔍

living in the kernel file ./drivers/hid/intel-ish-hid/ishtp/bus.c, and it's got so many siblings, ngl, the whole family reunion 😭:

• ishtp_recv(9)
• ishtp_send_msg(9)
• ishtp_write_message(9)
• ishtp_fw_cl_by_uuid(9)
• ishtp_fw_cl_get_client(9)
• ishtp_get_fw_client_id(9)
• ishtp_fw_cl_by_id(9)
• ishtp_cl_device_probe(9)
• ishtp_cl_bus_match(9)
• ishtp_cl_device_remove(9)
• ishtp_cl_device_suspend(9)
• ishtp_cl_device_resume(9)
• ishtp_cl_device_reset(9)
• ishtp_bus_add_device(9)
• ishtp_bus_remove_device(9)
• ishtp_cl_driver_register(9)
• ishtp_cl_driver_unregister(9)
• ishtp_bus_event_work(9)
• ishtp_cl_bus_rx_event(9)
• ishtp_register_event_cb(9)
• ishtp_get_device(9)
• ishtp_put_device(9)
• ishtp_set_drvdata(9)
• ishtp_get_drvdata(9)
• ishtp_dev_to_cl_device(9)
• ishtp_bus_new_client(9)
• ishtp_cl_device_bind(9)
• ishtp_bus_remove_all_clients(9)
• ishtp_reset_handler(9)
• ishtp_reset_compl_handler(9)
• ishtp_device(9)
• ishtp_wait_resume(9)
• ishtp_get_pci_device(9)
• ishtp_get_workqueue(9)
• ishtp_trace_callback(9)
• ish_hw_reset(9)
• ishtp_bus_register(9)
• ishtp_bus_unregister(9)

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and that's the whole page bestie, short and sweet, no cap 🍓

sign-off time 💜: this lil cutie lives in ./drivers/hid/intel-ish-hid/ishtp and the date on it is October 2026 — okay periodt, see you in the next manpage, mwah 🧚🌈