stm32_spi_unprepare_msg(9)

💅 stm32_spi_unprepare_msg(9) — a whole Kernel API Manual moment

okay bestie, welcome to the stm32_spi_unprepare_msg(9) page from the Kernel API Manual ✨ this one's a shortie but she's important — it's the lil cleanup cutie that lets the hardware chill after the spi party's over 🎀

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🌸 NAME 🌸

stm32_spi_unprepare_msg — relax the hardware 😌

like, literally just tell the SPI hardware to unclench and breathe, no cap 🫶

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✨ SYNOPSIS ✨

int stm32_spi_unprepare_msg (struct spi_controller *ctrl , struct
spi_message *msg );

it returns an int, she takes two pointers, and she is not here to be complicated 💅

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🦋 ARGUMENTS 🦋

• ctrl — the controller interface 🎛️ think of it as the main character plugging into the SPI controller itself
• msg — pointer to the spi message 📨 the actual message situation she's un-preparing

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🎀 SEE ALSO 🎀

the whole friend group lives in the kernel file ./drivers/spi/spi-stm32.c, and honestly? the roster is iconic. go say hi to:

struct stm32_spi_reg(9), struct stm32_spi_regspec(9), struct stm32_spi_cfg(9), struct stm32_spi(9), stm32h7_spi_get_fifo_size(9), stm32f4_spi_get_bpw_mask(9), stm32f7_spi_get_bpw_mask(9), stm32h7_spi_get_bpw_mask(9), stm32mp25_spi_get_bpw_mask(9), stm32_spi_prepare_mbr(9), stm32h7_spi_prepare_fthlv(9), stm32f4_spi_write_tx(9), stm32f7_spi_write_tx(9), stm32h7_spi_write_txfifo(9), stm32f4_spi_read_rx(9), stm32f7_spi_read_rx(9), stm32h7_spi_read_rxfifo(9), stm32_spi_enable(9), stm32fx_spi_disable(9), stm32h7_spi_disable(9), stm32_spi_can_dma(9), stm32fx_spi_irq_event(9), stm32fx_spi_irq_thread(9), stm32h7_spi_irq_thread(9), stm32_spi_prepare_msg(9), stm32fx_spi_dma_tx_cb(9), stm32_spi_dma_rx_cb(9), stm32_spi_dma_config(9), stm32fx_spi_transfer_one_irq(9), stm32h7_spi_transfer_one_poll(9), stm32h7_spi_transfer_one_irq(9), stm32fx_spi_transfer_one_dma_start(9), stm32f7_spi_transfer_one_dma_start(9), stm32h7_spi_transfer_one_dma_start(9), stm32_spi_prepare_rx_dma_mdma_chaining(9), stm32_spi_transfer_one_dma(9), stm32f4_spi_set_bpw(9), stm32f7_spi_set_bpw(9), stm32h7_spi_set_bpw(9), stm32_spi_set_mbr(9), stm32_spi_communication_type(9), stm32fx_spi_set_mode(9), stm32h7_spi_set_mode(9), stm32h7_spi_data_idleness(9), stm32h7_spi_number_of_data(9), stm32_spi_transfer_one_setup(9), stm32_spi_can_poll(9), stm32_spi_transfer_one(9), stm32fx_spi_config(9), stm32h7_spi_config(9)

like I said. a whole squad 🌈 go read them all, iykyk 💖

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ngl this page is short but she ate 💅 if you were looking for chaos, wrong function bestie — this one's just here to relax the hardware and dip 😌

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and that's the whole vibe check! 🦋 brought to you by ./drivers/spi and dated October 2026 — mwah, go relax some hardware, periodt ✨🎀