dm_test_help...wport_height(9)

✨ NAME ✨

dm_test_helper_check_state_small_viewport_height — bestie, this one's literally here to Verify height rejection. No cap. 💅

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🎀 SYNOPSIS 🎀

void dm_test_helper_check_state_small_viewport_height (struct kunit
test );

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🦋 ARGUMENTS 🦋

• test — the KUnit test context, aka the whole vibe check for this test. 🫶

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🌸 DESCRIPTION 🌸

Okay so picture this: we're checking if a negative-offset viewport with a too-small height gets rejected. That's it. That's the whole test. It's giving "boundary check, but make it iconic." 🔥

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👑 SEE ALSO 👑

Literally the whole fam, bestie — go read these next, iykyk:

• dm_test_plane_is_video_format_known_video(9)
• dm_test_fill_blending_defaults(9)
• dm_test_fill_blending_premulti_alpha_format(9)
• dm_test_fill_blending_coverage_alpha_format(9)
• dm_test_fill_blending_global_alpha(9)
• dm_test_modifier_has_dcc(9)
• dm_test_modifier_gfx9_swizzle_mode(9)
• dm_test_get_plane_formats(9)
• dm_test_get_plane_modifiers(9)
• dm_test_fill_dc_scaling_info(9)
• dm_test_get_min_max_dc_plane_scaling(9)
• dm_test_get_cursor_position(9)
• dm_test_format_mod_supported(9)
• dm_test_fill_gfx12_plane_attributes_from_modifiers(9)
• dm_test_fill_gfx9_plane_attributes_from_modifiers(9)
• dm_test_helper_check_state_viewport_reject(9)
• dm_test_validate_dcc_disabled_returns_success(9)
• dm_test_validate_dcc_video_non_gfx12_fails(9)
• dm_test_validate_dcc_missing_cap_func_fails(9)
• dm_test_validate_dcc_cap_callback_fails(9)
• dm_test_validate_dcc_not_capable_fails(9)
• dm_test_validate_dcc_success_and_scan_mapping(9)
• dm_test_validate_dcc_independent_64b_mismatch_fails(9)
• dm_test_add_modifier_appends_value(9)
• dm_test_add_modifier_grows_capacity(9)
• dm_test_add_modifier_noop_when_mods_null(9)
• dm_test_fill_gfx9_tiling_info_from_device_pre_10_3(9)
• dm_test_fill_gfx9_tiling_info_from_device_10_3_plus(9)
• dm_test_fill_gfx9_tiling_info_from_modifier_linear(9)
• dm_test_fill_gfx9_tiling_info_from_modifier_pre_nv(9)
• dm_test_fill_gfx9_tiling_info_from_modifier_nv(9)
• dm_test_get_format_info(9)
• dm_test_fill_blending_global_alpha_dcn42(9)
• dm_test_get_plane_formats_overlay_universal_cap(9)
• dm_test_get_plane_modifiers_gfx9(9)
• dm_test_get_plane_modifiers_rv(9)
• dm_test_get_plane_modifiers_rv_constant_encode(9)
• dm_test_get_plane_modifiers_gfx10_1(9)
• dm_test_get_plane_modifiers_gfx10_3(9)
• dm_test_get_plane_modifiers_gfx11_64k_first(9)
• dm_test_get_plane_modifiers_gfx11_256k_first(9)
• dm_test_get_plane_modifiers_gfx12(9)
• dm_test_fill_gfx9_plane_attributes_dcc(9)
• dm_test_fill_gfx9_plane_attributes_validate_fails(9)
• dm_test_fill_gfx9_plane_attributes_dcc_rbplus_64b_no_128bcl(9)
• dm_test_fill_gfx9_plane_attributes_dcc_rbplus_128b(9)
• dm_test_fill_gfx9_plane_attributes_dcc_rbplus_unconstrained(9)
• dm_test_fill_gfx9_plane_attributes_dcc_gfx9_64b(9)
• dm_test_fill_gfx9_plane_attributes_dcc_gfx9_unconstrained(9)
• dm_test_fill_gfx12_plane_attributes_block0(9)
• dm_test_fill_gfx12_plane_attributes_block_unconstrained(9)
• dm_test_fill_gfx12_plane_attributes_validate_fails(9)
• dm_test_fill_plane_buffer_attributes_video(9)
• dm_test_fill_plane_buffer_attributes_gfx12(9)
• dm_test_get_min_max_dc_plane_scaling_fp16(9)
• dm_test_helper_check_state_small_viewport_width(9)
• dm_test_helper_check_state_bottom_clipped_height(9)
• dm_test_helper_check_state_scaling_caps(9)
• dm_test_fill_dc_scaling_info_nv12_dcn1x(9)
• dm_test_fill_dc_scaling_info_plane_caps(9)
• dm_test_get_cursor_position_bad_size(9)
• dm_test_format_mod_supported_d_swizzle_reject(9)
• dm_test_atomic_async_check_rejects(9)
• dm_test_atomic_async_check_overlay_cursor(9)
• dm_test_atomic_check_no_dc_state(9)
• dm_test_atomic_check_missing_crtc_state(9)
• dm_test_atomic_check_helper_failure(9)
• dm_test_atomic_check_color_pipeline_conflict(9)
• dm_test_atomic_check_scaling_failure(9)
• dm_test_panic_flush_no_dc_state(9)
• dm_test_plane_reset_initializes_state(9)
• dm_test_plane_duplicate_state_copies_fields(9)
• dm_test_plane_destroy_state_minimal(9)

Also literally the kernel file itself: ./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_plane_test.c — go give it a read, bestie, it ate. 🍓

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💖 that's the whole page, periodt 💖

Source vibes come from ./drivers/gpu/drm/amd/display/..., dropped way back in October 2026, and the manual name is literally dm_test_help...wport_height(9) — slay, bye! 🧚‍♀️🌈