teedev_ctx_get(9)

✨ teedev_ctx_get(9) ✨

okay bestie, welcome to the Kernel API Manual — yes we're reading kernel docs together, this is our hangout now 💅 this one's teedev_ctx_get(9) and it's literally a one-line function that does One Job and honestly? icon behavior.

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🌸 NAME 🌸

teedev_ctx_get — bump up the reference count on a context, that's it, that's the whole gig 🎀

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🦋 SYNOPSIS 🦋

void teedev_ctx_get (struct tee_context *ctx );

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💖 ARGUMENTS 💖

• ctx — a pointer to the context. like, the context itself, not a copy, not a vibe, the actual pointer 🫶

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🔥 DESCRIPTION 🔥

So what's actually happening here: this function increases the refcount of the context. And that context is tied to resources that get shared by the same tee_device — so it's all one big friend group, yk? 👑

Now here's the part that matters, bestie, pay attention: during the unregistration process, the context may stay valid even after tee_device_unregister has already returned. Yeah. It outlives it. main character energy honestly 😭

So what are you supposed to do? You gotta make sure the context's refcount is properly decreased before you call tee_device_put — typically that happens inside the context's release function, which is exactly where it belongs 🎀

OR, alternative route: users can call tee_device_get and teedev_ctx_get together, then release them simultaneously. (peep shm_alloc_helper for the example, iykyk ⭐)

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🌈 SEE ALSO 🌈

the whole extended universe, no cap — kernel file ./include/linux/tee_core.h plus:

• struct tee_device(9)
• struct tee_driver_ops(9)
• struct tee_desc(9)
• struct tee_protmem_pool(9)
• struct tee_protmem_pool_ops(9)
• tee_device_alloc(9)
• tee_device_register(9)
• tee_device_unregister(9)
• tee_device_get(9)
• tee_device_put(9)
• tee_device_set_dev_groups(9)
• tee_session_calc_client_uuid(9)
• struct tee_shm_pool(9)
• struct tee_shm_pool_ops(9)
• tee_shm_pool_free(9)
• tee_protmem_static_pool_alloc(9)
• tee_get_drvdata(9)
• tee_shm_alloc_priv_buf(9)
• tee_shm_is_dynamic(9)
• tee_shm_put(9)
• tee_shm_get_id(9)
• tee_shm_get_from_id(9)
• teedev_open(9)
• teedev_close_context(9)
• teedev_ctx_put(9)

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⚠️ real talk: forget to drop that refcount before tee_device_put and you're gonna have a bad time. this is not a drill, bestie 💀

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and that's the whole page!! sourced from ./include/linux, dated October 2026, filed under teedev_ctx_get(9) — mwah, go refcount responsibly 🧚💜