[PATCH v2 0/2] drm/i915/modeset: fix NULL/ctx handling in lock paths

[george.d.sworo@intel.com]

From: George D Sworo <george.d.sworo@intel.com>

Hi,

This series addresses lock-context robustness seen in HDCP/MST paths,
where modeset locking can be reached with invalid or stale acquire_ctx
state and trigger WARN/Oops in modeset_lock().

Patch 1 keeps the original fix from v1.
Patch 2 adds a defensive fix for the additional ctx handling issue.

Changes in v2:
- Added patch 2 to handle NULL ctx defensively in modeset lock helper
  path.
- Kept patch 1 from v1 (no functional change) for complete series
  resend.
- Updated commit messages for clearer rationale and call-path context.
- Linked previous posting:
  https://patchwork.freedesktop.org/patch/721791/

Patch overview:
  drm/modeset_lock: add NULL check for ctx before WARN_ON
  drm/modeset: harden modeset_lock() against NULL ctx

 drivers/gpu/drm/drm_modeset_lock.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

-- 
2.34.1