geni_se_rx_dma_unprep(9)

💅 geni_se_rx_dma_unprep — the Kernel API Manual, bestie edition ✨

okay so this is a page from the Kernel API Manual (geni_se_rx_dma_unprep(9), section 9) and it's literally about cleaning up after your RX DMA transfer. yes, the after part. the part nobody posts about but everybody needs 🎀

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✨ NAME ✨

geni_se_rx_dma_unprep — Unprepare the serial engine after RX DMA transfer 💖

like, the un-prep. the "we're done here" moment. the cleanup era. 🧹

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🦋 SYNOPSIS 🦋

void geni_se_rx_dma_unprep (struct geni_se *se , dma_addr_t iova ,
       size_t len );

no return value, she just does the thing and leaves. main character energy fr fr 👑

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🌸 ARGUMENTS 🌸

• se — Pointer to the concerned serial engine 💅 like, the serial engine in question. the one we're talking about. the concerned one.
• iova — DMA address of the RX buffer 🫶
• len — Length of the RX buffer 📏

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🎀 DESCRIPTION 🎀

This function is used to unprepare the DMA buffers after DMA RX — that's it, that's the whole vibe. the RX DMA transfer already happened, she did her thing, and now we're unprepping the buffers. closing the tab. logging off. ✨

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🔥 SEE ALSO 🔥

okay bestie, this list is long but we do not skip. every single one of these is getting its moment 💜

• Kernel file ./drivers/soc/qcom/qcom-geni-se.c Overview(9) — the actual file, the source of truth, the blueprint 📜
• Hardware description(9)
• Software description(9)
• struct geni_wrapper(9)
• struct geni_se_desc(9)
• struct se_fw_hdr(9)
• geni_se_get_qup_hw_version(9)
• geni_se_init(9)
• geni_se_select_mode(9)
• Overview(9)
• geni_se_config_packing(9)
• geni_se_resources_off(9)
• geni_se_resources_on(9)
• geni_se_clk_tbl_get(9)
• geni_se_clk_freq_match(9)
• geni_se_tx_init_dma(9)
• geni_se_tx_dma_prep(9)
• geni_se_rx_init_dma(9)
• geni_se_rx_dma_prep(9)
• geni_se_tx_dma_unprep(9) — her sibling, the TX version of this whole situation 😌
• geni_icc_set_bw_ab(9)
• geni_se_resources_deactivate(9)
• geni_se_resources_activate(9)
• geni_se_set_perf_level(9)
• geni_se_set_perf_opp(9)
• geni_se_domain_attach(9)
• geni_se_resources_init(9)
• geni_find_protocol_fw(9)
• geni_configure_xfer_mode(9)
• geni_enable_interrupts(9)
• geni_write_fw_revision(9)
• geni_load_se_fw(9)
• geni_load_se_firmware(9)

ngl if you're reading this page you're probably already deep in ./drivers/soc/qcom and honestly? iconic. iykyk 🌈

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~~ cute lil sign-off ~~ 🌸

so like, this whole thing lives over in ./drivers/soc/qcom, and the version/date situation is October 2026 — yes, october twenty twenty six, she's from the future, we don't question it 💀✨

stay hydrated, unprep your buffers responsibly, and remember: the DMA transfer ended, but the friendship didn't 🫶💖🎀