hid_ishtp_set_feature(9)

💖 hid_ishtp_set_feature(9) — Kernel API Manual, but make it make sense 💖

okay bestie, so this is a page from the Kernel API Manual — yes the actual kernel, we're in the big leagues now ✨ and this one's about hid_ishtp_set_feature.

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🌸 NAME 🌸

hid_ishtp_set_feature — the way we send a request over to the ISH FW asking it to, you know, set a feature request 🎀

🦋 SYNOPSIS 🦋

void hid_ishtp_set_feature (struct hid_device *hid , char *buf ,
unsigned int len , int report_id );

literally just look at it. slay. 💅

✨ ARGUMENTS ✨

• hid — the hid device instance for this request 🫶 like, this is the device we're talking to, no cap
• buf — the feature buffer 🌈 your little payload lives here
• len — length of the feature buffer 📏 gotta know how much of buf is actually real
• report_id — the report id for the feature set request 🎯 iykyk

💜 DESCRIPTION 💜

so this one gets called from the hid core .request callback — that's the whole vibe. and here's the thing bestie, the most important part: this function doesn't wait for a response. 🏃‍♀️💨 it fires off and dips, main character energy, no follow-up text, no "hey did you get my message", nothing.

ngl that's the whole point — don't sit there expecting an answer that is not coming 😭

👑 SEE ALSO 👑

kernel file ./drivers/hid/intel-ish-hid/ishtp-hid-client.c — that's where the magic lives, go read it fr fr 📖

and the whole friend group 🫶:

report_bad_packet(9), process_recv(9), ish_cl_event_cb(9), hid_ishtp_get_report(9), ishtp_hid_link_ready_wait(9), ishtp_enum_enum_devices(9), ishtp_get_hid_descriptor(9), ishtp_get_report_descriptor(9), hid_ishtp_cl_init(9), hid_ishtp_cl_deinit(9), hid_ishtp_cl_probe(9), hid_ishtp_cl_remove(9), hid_ishtp_cl_reset(9), hid_ishtp_cl_suspend(9), hid_ishtp_cl_resume(9)

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that's the whole page bestie, you ate that 🍓

sign-off szn: this one came out of ./drivers/hid/intel-ish-hid, dated October 2026, and it's all hid_ishtp_set_feature(9) at the end of the day 💖✨🎀