Linux: Update kernel to 6.12.56

[sairon]

• https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.56

Summary by CodeRabbit

• Chores
  • Updated Linux kernel version from 6.12.55 to 6.12.56 across all supported platforms, including OVA, Home Assistant Green, Tinker Board, ODROID series, generic aarch64/x86-64, and Khadas VIM3.

[coderabbitai]

📝 Walkthrough

Walkthrough

This change updates the Linux kernel version from 6.12.55 to 6.12.56 across documentation and 12 board-specific build configurations. The version string is updated in a kernel version table and in all corresponding defconfig files.

Changes

Cohort / File(s)	Summary
Documentation Documentation/kernel.md	Updated kernel version table entries from 6.12.55 to 6.12.56 for Open Virtual Appliance, Home Assistant Green, Tinker Board, ODROID variants (C2, C4, M1, M1S, N2, XU4), Generic aarch64, Generic x86-64, and Khadas VIM3
Buildroot Board Configurations buildroot-external/configs/generic_aarch64_defconfig buildroot-external/configs/generic_x86_64_defconfig buildroot-external/configs/green_defconfig buildroot-external/configs/khadas_vim3_defconfig buildroot-external/configs/odroid_c2_defconfig buildroot-external/configs/odroid_c4_defconfig buildroot-external/configs/odroid_m1_defconfig buildroot-external/configs/odroid_m1s_defconfig buildroot-external/configs/odroid_n2_defconfig buildroot-external/configs/odroid_xu4_defconfig buildroot-external/configs/ova_defconfig buildroot-external/configs/tinker_defconfig	Updated BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE from "6.12.55" to "6.12.56" in each defconfig file

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

• Highly homogeneous changes following a single pattern across all files
• Version bump verification required for consistency
• No control flow or structural changes present

Pre-merge checks and finishing touches

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	You can run @coderabbitai generate docstrings to improve docstring coverage.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title Check	✅ Passed	The pull request title "Linux: Update kernel to 6.12.56" directly and accurately summarizes the main change in the changeset. All modifications across the PR are exclusively focused on updating the Linux kernel version from 6.12.55 to 6.12.56 in documentation and configuration files. The title is concise, clear, and specific—a teammate scanning the repository history would immediately understand that this commit updates the kernel version to 6.12.56. The title avoids vague or generic terms and provides meaningful information about the changeset.

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch bump-linux-6.12.56

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

Cache: Disabled due to data retention organization setting

Knowledge base: Disabled due to data retention organization setting

📥 Commits

Reviewing files that changed from the base of the PR and between b3a9e76 and ff3651c.

📒 Files selected for processing (13)

• Documentation/kernel.md (1 hunks)
• buildroot-external/configs/generic_aarch64_defconfig (1 hunks)
• buildroot-external/configs/generic_x86_64_defconfig (1 hunks)
• buildroot-external/configs/green_defconfig (1 hunks)
• buildroot-external/configs/khadas_vim3_defconfig (1 hunks)
• buildroot-external/configs/odroid_c2_defconfig (1 hunks)
• buildroot-external/configs/odroid_c4_defconfig (1 hunks)
• buildroot-external/configs/odroid_m1_defconfig (1 hunks)
• buildroot-external/configs/odroid_m1s_defconfig (1 hunks)
• buildroot-external/configs/odroid_n2_defconfig (1 hunks)
• buildroot-external/configs/odroid_xu4_defconfig (1 hunks)
• buildroot-external/configs/ova_defconfig (1 hunks)
• buildroot-external/configs/tinker_defconfig (1 hunks)

🧰 Additional context used

📓 Path-based instructions (1)

*/**(html|markdown|md)

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Files:

• Documentation/kernel.md

🔇 Additional comments (6)

buildroot-external/configs/odroid_xu4_defconfig (1)

22-22: Kernel version update looks good across all boards!

The version bump from 6.12.55 to 6.12.56 is consistently applied across all 8 board configurations. This is a routine patch-level kernel update for bug fixes and security improvements.

buildroot-external/configs/green_defconfig (1)

21-21: Kernel version update looks good.

The version bump to 6.12.56 is consistent with the PR objective and upstream kernel release.

buildroot-external/configs/ova_defconfig (1)

21-21: Kernel version update looks good.

The version bump to 6.12.56 is consistent with the PR objective and upstream kernel release.

buildroot-external/configs/odroid_c4_defconfig (1)

21-21: Kernel version update looks good.

The version bump to 6.12.56 is consistent with the PR objective and upstream kernel release.

buildroot-external/configs/khadas_vim3_defconfig (1)

21-21: Kernel version update looks good.

The version bump to 6.12.56 is consistent with the PR objective and upstream kernel release.

Documentation/kernel.md (1)

6-24: Documentation updates are accurate.

The kernel version table correctly reflects the version bump to 6.12.56 for all affected boards.

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