devm_tegra_m...ntroller_get(9)

✨ devm_tegra_m...ntroller_get(9) ✨

okay so real talk, this is a page straight out of the Kernel API Manual and it's honestly kind of a little gem 💎 like it's short, it's sweet, it does exactly one thing and it does it well. main character energy fr. let's get into it 🫶

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🌸 NAME 🌸

devm_tegra_memory_controller_get — get the Tegra Memory Controller handle, bestie. that's the whole gig 💅

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🦋 SYNOPSIS 🦋

struct tegra_mc * devm_tegra_memory_controller_get (struct device *dev );

like yes that's the entire signature, no cap. one function, one argument, one very specific job ✨

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🎀 ARGUMENTS 🎀

• dev — the device pointer for the consumer device 💖 this is the device that's like "hey bestie can I get a memory controller please" and honestly same

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💜 DESCRIPTION 💜

okay so here's the vibe 🌈 this function goes and searches for the Memory Controller node in a device-tree, and then it retrieves the Memory Controller handle for you. that's it. that's the function. it's out here doing the find-and-fetch so you don't have to 😭 iconic behaviour honestly

no complicated options, no weird flags, just tree-walking and handle-getting. the way that it's literally just a lookup and yet it's still doing the most for your driver 🧚

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🔥 RETURN 🔥

• ERR_PTR on error 😭 (so like, check it, please, don't just rawdog it into a dereference, that's giving undefined behaviour and we don't do that here)
• or a valid pointer to a struct tegra_mc 👑 which is the slay outcome, the one you want, the one where everything works out 💖

ngl the classic pattern applies: if it's an error pointer, handle it. this page is telling you the two possible outcomes and it is not being subtle about it. check your pointers bestie 🫶

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🍓 SEE ALSO 🍓

• Kernel file ./drivers/memory/tegra/mc.c — the source, the origin, the mothership 🌸 go read it, iykyk

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and that's the whole page diva 💅 nothing else to see, it's a one-trick pony and the trick is good. the source lives down in ./drivers/memory/tegra, dated October 2026, and it's all wrapped up under the devm_tegra_m...ntroller_get(9) title in the Kernel API Manual 🎀 periodt, go get your memory controller handle bestie 💖✨