spi_mem_exec_op(9)

✨ spi_mem_exec_op(9) ✨

Okay so bestie, welcome to the kernel API manual for spi_mem_exec_op — she's serving main character energy from ./drivers/spi and honestly she's the one who actually does the thing. Let's get into it 💅

🌸 SYNOPSIS 🌸

int spi_mem_exec_op (struct spi_mem *mem , const struct spi_mem_op *op
);

Like, that's the whole vibe check right there — you hand her a memory and an operation and she goes off to make it happen ✨

🎀 ARGUMENTS 🎀

• mem — the SPI memory, aka the whole reason we're here 🫶
• op — the memory operation to execute, like the actual assignment bestie, the thing on the to-do list

💖 DESCRIPTION 💖

Executes a memory operation. That's it. That's the tweet.

But okay, the way she does it is lowkey cute: this function first checks that op is supported, and then tries to execute it. So she's not just out here winging it — she does a little vibe check first, and if the op doesn't pass, she's not even gonna try. Iconic behaviour, honestly 💅✨

🔥 RETURN 🔥

0 in case of success — slay 💖 — and a negative error code otherwise 😭 (ngl, if you see a negative number, that's your sign something went sideways, fr fr).

🦋 SEE ALSO 🦋

• Kernel file ./drivers/spi/spi-mem.c — the source of truth, go read her 👑
• spi_controller_dma_map_mem_op_data(9)
• spi_controller_dma_unmap_mem_op_data(9)
• spi_mem_supports_op(9)
• spi_mem_get_name(9)
• spi_mem_set_dqs(9)
• spi_mem_has_dqs(9)
• spi_mem_adjust_op_size(9)
• spi_mem_adjust_op_freq(9)
• spi_mem_calc_op_duration(9)
• spi_mem_dirmap_create(9)
• spi_mem_dirmap_destroy(9)
• devm_spi_mem_dirmap_create(9)
• devm_spi_mem_dirmap_destroy(9)
• spi_mem_dirmap_read(9)
• spi_mem_dirmap_write(9)
• spi_mem_poll_status(9)
• spi_mem_driver_register_with_owner(9)
• spi_mem_driver_unregister(9)

That's the whole page bestie, go forth and execute some memory ops 🧚‍♀️💜

— with love from ./drivers/spi, October 2026, spi_mem_exec_op(9) 🎀💖✨