Re: [PATCH v3] serial: 8250: fix shared IRQ startup race causing IRQ warning

[Jing Wu <realwujing@gmail.com>]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 1585 bytes --]

On Wed, Jul 08, 2026 at 03:23:06PM +0800, Wang Zhaolong wrote:
> Changes in v3:
>   - Rename hash_mutex to irq_chain_mutex now that it also serializes IRQ chain
>     publication and first request_irq() completion.
>   - Add __must_hold() and lockdep_assert_held() to document the locking
>     requirement for serial_get_or_create_irq_info().

Wang, these changes listed in your v3 changelog were all made in our
series first — by Jiri's review feedback to *our* patches, not yours:

  - irq_chain_mutex rename: our v7, sent before your v3
  - __must_hold() + lockdep_assert_held(): our v5, sent on Jun 24

Your v3 copies these verbatim and presents them as your own work in the
changelog.  No Co-developed-by, no mention of our series at all.

The full timeline:

  May 27  Wang v1 — only the THRE test race, no use-after-free fix
  May 28  Our v1 — both races, full fix
  May 29  Wang on our v3 thread: "v3 fixes the Bugzilla reproducer"
  Jun 24  Our v5 — added __must_hold() and lockdep_assert_held()
  Jul  7  Our v6 — back to guard style
  Jul  8  Our v7 — renamed hash_mutex to irq_chain_mutex
  Jul  8  Wang v3 — copies irq_chain_mutex rename, __must_hold(),
                  lockdep_assert_held() from our v5/v7

We added Co-developed-by: Wang Zhaolong to our v7.  You've applied
several of our changes across your v2 and v3 without offering the same
credit.  Please add the appropriate Co-developed-by tags.

Jiri has asked us to coordinate.  We've been cooperative — we credited
you, we're running the same fix.  Let's work together on this.

Thanks,
Jing