spi_test_execute_msg(9)

💫 spi_test_execute_msg 💫

okay so welcome to the Kernel API Manual bestie, we're doing SPI loopback testing today and honestly it's giving very much "trust the process" 🫶

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🌸 NAME 🌸

spi_test_execute_msg — the default implementation that actually runs a test, like it's the one who shows up and does the work no cap 💅

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✨ SYNOPSIS ✨

int spi_test_execute_msg (struct spi_device *spi , struct spi_test *test
, void *tx , void *rx );

lowkey just four args, we love a compact signature 🎀

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🦋 ARGUMENTS 🦋

• spi — the spi_device you're running the spi_message on. this is the lil guy in question, the main character of the transfer fr fr.
• test — the test you want to execute, and heads up: it already contains msg. so don't go adding one, it's got one, we're good 💖
• tx — the tx buffer that was allocated for the test sequence. pre-allocated, don't come for me.
• rx — the rx buffer that was allocated for the test sequence. same deal, it's already yours ✨

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⭐ RETURN ⭐

it hands you back the error code of spi_sync, plus some basic error checking on top. so like, you get the vibe check and the receipt 😭

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🧚 SEE ALSO 🧚

• kernel file ./drivers/spi/spi-loopback-test.c
• spi_test_run_test(9)
• spi_test_run_tests(9)

go read those next, iykyk 👑

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and that's the whole page bestie 💜 huge slay, no notes. this one lives in ./drivers/spi and the version fairies stamped it October 2026 — iconic of them honestly 🎀✨🌈