devres_release(9)

devres_release(9) 💅

okay so this is the Kernel API Manual page for devres_release, bestie — the “find that device resource and destroy it, but call release first” situation. It’s giving cleanup era, and honestly we’re obsessed. ✨

✨ NAME ✨

devres_release — Find a device resource and destroy it, calling release. 🎀

✨ SYNOPSIS ✨

int devres_release (struct device *dev , dr_release_t release ,
dr_match_t match , void *match_data );

✨ ARGUMENTS ✨

• dev — Device to find resource from. We’re looking through this device’s devres stash, bestie. 🫶
• release — Look for resources associated with this release function. This is the release-function vibe we’re matching on. 🔥
• match — Match function (optional). Optional optional, no pressure. If match is NULL, it’s considered to match all. 🌈
• match_data — Data for the match function. Hand it over to the match function, iykyk. 🎀

✨ DESCRIPTION ✨

Okay so here’s the tea: devres_release finds the latest devres of dev associated with release and for which match returns 1. Yep — the latest one, main character devres energy only. 👑

If match is NULL, it’s considered to match all. No gatekeeping. 💖

If it’s found, the resource is removed atomically, the release function is called, and the resource is freed. Boom: found, released, freed, slay. ✨

✨ RETURN ✨

• 0 — if devres is found and freed. Iconic. ✅
• -ENOENT — if not found. It’s giving “bestie, I looked and it’s not here” 😭

✨ SEE ALSO ✨

Kernel file ./drivers/base/devres.c — and the whole devres/devm friend group:

• __devres_alloc_node(9)
• devres_for_each_res(9)
• devres_free(9)
• devres_add(9)
• devres_find(9)
• devres_get(9)
• devres_remove(9)
• devres_destroy(9)
• devres_release_all(9)
• devres_open_group(9)
• devres_close_group(9)
• devres_remove_group(9)
• devres_release_group(9)
• __devm_add_action(9)
• devm_remove_action_nowarn(9)
• devm_release_action(9)
• devm_kmalloc(9)
• devm_krealloc(9)
• devm_kstrdup(9)
• devm_kstrdup_const(9)
• devm_kvasprintf(9)
• devm_kasprintf(9)
• devm_kfree(9)
• devm_kmemdup(9)
• devm_kmemdup_const(9)
• devm_get_free_pages(9)
• devm_free_pages(9)
• __devm_alloc_percpu(9)

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mwah 💖 source/version vibe: ./drivers/base; date: October 2026 — that’s the footer, bestie, and we’re done. 🫶