sdw_slave_rt_alloc(9)

✨ sdw_slave_rt_alloc ✨

okay so real quick — this page is from the Kernel API Manual (yes bestie, kernel docs can be cute too, we're making it happen) and it's literally all about one function. buckle up 🎀

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💖 NAME 💖

sdw_slave_rt_alloc — allocate a Slave runtime handle. that's it, that's the whole job 🫶

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🌸 SYNOPSIS 🌸

struct sdw_slave_runtime * sdw_slave_rt_alloc (struct sdw_slave *slave ,
struct sdw_master_runtime *m_rt );

like… it takes two things and hands you back a struct sdw_slave_runtime *. iconic behavior honestly 💅

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🦋 ARGUMENTS 🦋

• slave — the Slave handle. your little guy. the one you're allocating a runtime for 🧚
• m_rt — the Master runtime handle. the other half of the duo, main character energy fr fr 👑

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🔥 DESCRIPTION 🔥

so here's the tea ☕ — this function has one rule and you literally cannot skip it:

you must call this with bus_lock held. no cap. if you don't, that's on you bestie 😭

that's genuinely the whole description in the original and honestly? it ate. short, sweet, terrifying. periodt.

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💜 SEE ALSO 💜

okay this list is long but do NOT skip it, every single one of these is a real reference and i'm not about to drop a single name 🙈 (kernel file: ./drivers/soundwire/stream.c, slay):

• sdw_program_port_params(9)
• sdw_enable_disable_slave_ports(9)
• sdw_enable_disable_ports(9)
• sdw_prep_deprep_ports(9)
• sdw_notify_config(9)
• sdw_program_params(9)
• sdw_ml_sync_bank_switch(9)
• sdw_slave_rt_config(9)
• sdw_slave_rt_free(9)
• sdw_master_rt_alloc(9)
• sdw_master_rt_config(9)
• sdw_master_rt_free(9)
• sdw_config_stream(9)
• sdw_get_slave_dpn_prop(9)
• sdw_acquire_bus_lock(9)
• sdw_release_bus_lock(9)
• sdw_prepare_stream(9)
• sdw_enable_stream(9)
• sdw_disable_stream(9)
• sdw_deprepare_stream(9)
• sdw_alloc_stream(9)
• sdw_startup_stream(9)
• sdw_shutdown_stream(9)
• sdw_release_stream(9)
• sdw_stream_add_master(9)
• sdw_stream_remove_master(9)
• sdw_stream_add_slave(9)
• sdw_stream_remove_slave(9)

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and that's the whole page!! 🌈⭐ this little cutie lives in ./drivers/soundwire, and it's dated October 2026 — so yeah, it's giving future-dated queen 👑🦋 sending you off with love, go hold that bus_lock bestie 💖🎀🌸