Claude review: drm/exynos: vidi: fix various memory corruption bugs

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Overall Series Review

Subject: drm/exynos: vidi: fix various memory corruption bugs
Author: Jeongjun Park <aha310510@gmail.com>
Patches: 3
Reviewed: 2026-02-23T06:11:02.494577

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This is a two-patch backport series for the 6.18.y and 6.19.y stable trees, fixing two bugs in the Exynos DRM VIDI (Virtual Display Interface) driver. Both patches have upstream commits (d3968a0d85b2 and d4c98c077c7f respectively), already merged to drm-next.

Patch 1 fixes a context lookup bug in `vidi_connection_ioctl()` where the driver was incorrectly fetching `vidi_context` from the master DRM device's `driver_data` instead of from the vidi component device. Patch 2 fixes a direct user pointer dereference where `vidi->edid` (a user-space pointer passed via ioctl) was cast and accessed directly in kernel space without `copy_from_user()`.

Both fixes are correct and match the code already present in drm-next. The series is properly ordered: patch 1 introduces the `vidi_dev` infrastructure needed for the correct device lookup, and patch 2 builds on that to also fix the unsafe user pointer access. No significant issues found.

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