hsi_flush(9)

💅 hsi_flush(9) — the Kernel API Manual glow-up you didn't know you needed 🎀

okay so bestie, welcome to hsi_flush(9) from the Kernel API Manual — yes that's the manual name, no you can't sit with us unless you read it. this one's short and sweet and honestly kind of a baddie. let's get into it ✨

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🦋 NAME 🦋

hsi_flush — flushes, like, all the pending transactions on the client's port. every last one. gone. periodt. 💅

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🌸 SYNOPSIS 🌸

int hsi_flush (struct hsi_client *cl );

that's it. that's the whole signature. she's lowkey minimal and I respect it 🫶

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⭐ ARGUMENTS ⭐

• cl — pointer to the struct hsi_client. that's your client, bestie, the one whose port we're about to clean out 👑

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🔥 DESCRIPTION 🔥

kay so here's the vibe: this function will destroy all pending hsi_msg in the port 💀 like, not "politely ask them to leave" — destroy. then it resets the HW port so it's ready to receive and transmit from a clean state. fresh start, clean slate, main character energy only 🌈✨

ngl this one's a full reset, so anything still pending in that port is Not Surviving. handle with intention, bestie 🙈

returns -errno on failure, and 0 on success — the classic. if it's 0 we cheer, if it's -errno we cry (affectionately) 😭

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🧚 SEE ALSO 🧚

• the kernel file ./include/linux/hsi/hsi.h — go read her, she's iconic 💖
• struct hsi_channel(9)
• struct hsi_config(9)
• struct hsi_board_info(9)
• struct hsi_client(9)
• struct hsi_client_driver(9)
• struct hsi_msg(9)
• struct hsi_port(9)
• struct hsi_controller(9)
• hsi_id(9)
• hsi_port_id(9)
• hsi_setup(9)
• hsi_async_read(9)
• hsi_async_write(9)
• hsi_start_tx(9)
• hsi_stop_tx(9)

like the whole friend group fr fr 👯‍♀️

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sign-off szn 🎀 this lil gem comes from the source in ./include/linux/hsi, dated October 2026 — and yes, that date is from the future, she's ahead of her time. mwah 💋 stay flushed, stay flawless, iykyk 🦋💜