DRM_DEV_ERROR(9)

💅 DRM_DEV_ERROR 💅

ok so bestie, welcome to DRM_DEV_ERROR(9) — that's the kernel API manual page, and yes the title is literally just the function name in all caps like it's screaming for attention. iconic of it honestly.

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✨ NAME ✨

DRM_DEV_ERROR — Error output. that's it. that's the whole vibe. it prints errors. slay.

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🎀 SYNOPSIS 🎀

DRM_DEV_ERROR (dev , fmt , ... );

ok yes the spacing in there is a little unhinged (the dev , with a space before the comma? whoever wrote that woke up and chose chaos) but we copy it exactly, no cap. 🫶

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🌸 ARGUMENTS 🌸

• dev — device pointer. the lil handle to the device you're yelling about 💖
• fmt — a printf like format string. same energy as regular printf, so all your %d and %s muscle memory still works ✨
• ... — variable arguments. the "and friends" of the argument list, they get fed into your format string 🌈

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💀 NOTE 💀

ok so here's the tea and it's a lil sad: this is deprecated in favor of drm_err or dev_err. 😭

so like… it still works, but it's giving "old group chat you don't reply to anymore." if you're writing new code, use drm_err or dev_err instead. don't be the one still using the deprecated thing, i'm begging 🙈

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🦋 SEE ALSO 🦋

the whole friend group, in the order the page lists them, and yes we're listing every single one because nobody gets left out 💜:

• ./include/drm/drm_print.h — the kernel file, aka where the actual code lives 👑
• print(9)
• enum drm_debug_category(9)
• struct drm_printer(9)
• drm_vprintf(9)
• drm_printf_indent(9)
• struct drm_print_iterator(9)
• drm_coredump_printer(9)
• drm_coredump_printer_is_full(9)
• drm_seq_file_printer(9)
• drm_info_printer(9)
• drm_dbg_printer(9)
• drm_err_printer(9)
• drm_line_printer(9)
• DRM_DEV_ERROR_RATELIMITED(9) — the rate-limited version of this exact thing, so it doesn't spam your dmesg 🔥
• DRM_DEV_DEBUG(9)
• DRM_DEV_DEBUG_DRIVER(9)
• DRM_DEV_DEBUG_KMS(9)

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ok that's the page!! mwah 💋 this came from ./include/drm, dated October 2026, and the manual-slash-page name on the tin is DRM_DEV_ERROR(9) — go forth and log responsibly, bestie 🧚⭐