[Bug 220272] Latent race condition in USB code unveiled with optimized memset_64.S

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=220272

--- Comment #25 from Marcus Seyfarth (m.seyfarth@gmail.com) ---
Created attachment 308351
  --> https://bugzilla.kernel.org/attachment.cgi?id=308351&action=edit
Trace v4 - Shark Force mouse / non-working memset

Here are the v4 traces from a different mouse (Sharkoon Shark Force) for the
non-working memset implementation. This mouse shows a slightly different
behavior, it also does not work initially but it did not come back successfully
after the re-plug event (the USB LEDs were working though). There is no cursor
movement on the desktop.

This deviates from the initial Sharkoon Light 2 100 mouse that did come back
successfully after a re-plug event.

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