Claude review: drm/i915/dp: Fix readback for target_rr in Adaptive Sync SDP

Claude Code Review Bot
2026-03-31T07:39:46Z

Patch Review

Correct fix — the original code `(u64)sdp->db[3] | ((u64)sdp->db[4] & 0x3)` ORs the two bytes without shifting, producing wrong values. The fix properly shifts DB4 bits up:
```c
+ as_sdp->target_rr = ((sdp->db[4] & 0x3) << 8) | sdp->db[3];
```
Has Fixes: tag and Ville's R-b. Good.