ishtp_cl_alloc_rx_ring(9)

💖 ishtp_cl_alloc_rx_ring — the Kernel API Manual glow-up 💖

okay so bestie, we're in the Kernel API Manual today and the vibe is kernel internals ✨ this one is literally ishtp_cl_alloc_rx_ring, and yes we're saying it out loud with our whole chest 🫶

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✨ NAME ✨

ishtp_cl_alloc_rx_ring — literally just allocate RX ring buffers 💅 that's the whole personality, no notes.

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🦋 SYNOPSIS 🦋

int ishtp_cl_alloc_rx_ring (struct ishtp_cl *cl );

it takes one (1) argument and returns an int, and honestly? iconic behavior 🌸

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🎀 ARGUMENTS 🎀

• cl — the client device instance 😌 like, the actual client you're doing all this for. struct ishtp_cl * and everything. slay.

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🔥 DESCRIPTION 🔥

so what does it do? it allocates and initializes RX ring buffers 🎀 that's it, that's the function. it's giving "setup era" energy: the buffers get made, they get initialized, and then the rest of the RX pipeline can be the main character 💜 no cap, this is the function you call when you want your receive ring to actually exist.

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⭐ RETURN ⭐

• 0 — on success, we love to see it 👑
• else -ENOMEM — bestie it's giving "couldn't allocate memory" 😭😭 the allocation did not eat, and you get to deal with it.

fr fr check that return value. 0 = happy little buffers 🌈, -ENOMEM = out of memory and you're on your own 🫶

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🌸 SEE ALSO 🌸

• the kernel file itself, iykyk: ./drivers/hid/intel-ish-hid/ishtp/client-buffers.c
• ishtp_cl_alloc_tx_ring(9) — the TX twin 🦋
• ishtp_cl_free_rx_ring(9) — the cleanup bestie for this exact ring 💅
• ishtp_cl_free_tx_ring(9) — cleanup for the other one 🧚
• ishtp_io_rb_free(9)
• ishtp_io_rb_init(9)
• ishtp_io_rb_alloc_buf(9)
• ishtp_cl_io_rb_recycle(9)
• ishtp_cl_rx_get_rb(9) — go get that ring buffer ⭐

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okay that's the whole page, 10/10 no crumbs 💖 and for the sign-off: this beauty lives in the kernel tree at ./drivers/hid/intel-ish-hid/ishtp, dated October 2026 in the Kernel API Manual — periodt, go free some rings 🎀💜