ssam_device_id_is_null(9)

okay bestie, welcome to ssam_device_id_is_null(9) from the Kernel API Manual — this is your group-chat explainer for a tiny kernel check ✨

🎀 NAME 🎀

ssam_device_id_is_null — check if a device ID is null. that's the whole vibe, fr fr. 💖

✨ SYNOPSIS ✨

bool ssam_device_id_is_null (const struct ssam_device_id *id );

🫶 ARGUMENTS 🫶

• id — the device ID to check. yes bestie, that's the only argument, and she's doing her job 💅

🌸 DESCRIPTION 🌸

okay so this function checks if a given device ID is null, i.e. all zeros. no cap, that's literally it. it's used to check for the end of MODULE_DEVICE_TABLE(ssam, ...) or similar lists — like the little “we're done here” marker at the end of the lineup 🎀

🔥 RETURN 🔥

Returns true if the given ID represents a null ID, false otherwise. literally a little boolean vibe check — true means null, false means not null 💖🦋

👑 SEE ALSO 👑

Kernel file ./drivers/platform/surface/aggregator/bus.c is the spot to peek at, and here's the whole bestie lineup:

• ssam_device_alloc(9)
• ssam_device_add(9)
• ssam_device_remove(9)
• ssam_device_id_compatible(9)
• ssam_device_id_match(9)
• ssam_device_get_match(9)
• ssam_device_get_match_data(9)
• __ssam_device_driver_register(9)
• ssam_device_driver_unregister(9)
• ssam_bus_register(9)
• ssam_bus_unregister(9)
• __ssam_register_clients(9)
• ssam_remove_clients(9)

bye bestie 💖 this page's source/version is ./drivers/platform/surface/agg..., dated October 2026, and it's literally ssam_device_id_is_null(9) in the Kernel API Manual. mwah 💅✨