pvr_device_i...set_features(9)

💅 pvr_device_info_set_features(9) — bestie edition

okay so this is a page from the Kernel API Manual (yep, the pvr_device_i...set_features(9) one, the name is literally truncated with ... because kernel function names are so long, that's just how it is) and it's genuinely so much less scary than it looks. sit down, hydrate, let's go 🍓

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✨ NAME ✨

pvr_device_info_set_features — sets the device features from the device information that lives in the firmware. that's it, that's the whole vibe 🫶

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🌸 SYNOPSIS 🌸

int pvr_device_info_set_features(struct pvr_device *pvr_dev, const u64 *features,
                                 u32 features_size, u32 feature_param_size);

four args, one int coming back at you. iconic signature honestly 👑

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🎀 ARGUMENTS 🎀

• pvr_dev — the device pointer. your main character, fr fr 💖
• features — pointer to the features mask, which is chillin' inside the device information. very demure ✨
• features_size — how big that features mask is, and the unit is u64s. not bytes, bestie, u64s. iykyk 🦋
• feature_param_size — how big the feature parameters are, also measured in u64s. same energy, different thing 🌈

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⭐ RETURN ⭐

• 0 on success, slay 💅
• -EINVAL if the stream is malformed — like, the data came in looking a mess and the kernel said "not today" 😭

ngl that -EINVAL is your cue that something upstream handed you a malformed stream, not a you problem to fix by vibing harder.

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/gpu/drm/imagination/pvr_device_info.c — go read the source, it's literally right there 👀
• pvr_device_info_set_quirks(9) — the quirks sibling 🧚
• pvr_device_info_set_enhancements(9) — and the enhancements sibling, matching set 💜

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that's the whole page, no cap. source lives under ./drivers/gpu/drm/imagination, version dated October 2026 — so note that down and go be amazing, periodt 🔥👑