drm_core_check_all_features(9)

💅 drm_core_check_all_features(9)

ok so bestie, this one's from the Kernel API Manual — the drm_core_check_all_features(9) page — and it's genuinely one of the most useful little vibe checks in the whole DRM directory. let's get into it 🎀

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✨ NAME ✨

drm_core_check_all_features — check driver feature flags mask 🦋

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🌸 SYNOPSIS 🌸

bool drm_core_check_all_features (const struct drm_device *dev , u32
features );

like, it returns a bool, it takes a const struct drm_device *dev and a u32 features, that's the whole gig ✨

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💖 ARGUMENTS 💖

• dev — the DRM device you're checking 👀
• features — the feature flag(s) mask, i.e. the little bundle of flags you're asking about 🎀

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👑 DESCRIPTION 👑

so what this does is it checks dev for driver features. and when I say "see also" I mean literally go look at:

• drm_driver.driver_features
• drm_device.driver_features
• and the various enum drm_driver_feature flags 🌈

it returns true if all the features in the features mask are supported, and false otherwise. that's it. that's the whole function. all-or-nothing, no partial credit, main character energy only 👑

ngl the "all" is doing a lot of heavy lifting here — it's an every-single-one situation, not an any-of-them situation 💀

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🫶 SEE ALSO 🫶

• Kernel file ./include/drm/drm_drv.h
• enum drm_driver_feature(9)
• struct drm_driver(9)
• devm_drm_dev_alloc(9)
• drm_dev_is_unplugged(9)
• drm_core_check_feature(9)
• drm_drv_uses_atomic_modeset(9)

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and that's the page!! 🎀 this iconic lil' entry lives in ./include/drm, dated October 2026, and it's literally titled drm_core_check_all_features(9) — go forth and check those features, bestie 💜✨