[Bug 76554] [gm45 regression] [drm:init_ring_common]: *ERROR* render ring initialization failed

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76554

--- Comment #87 from Jiri Kosina <jikos at jikos.cz> ---
(In reply to comment #85)
> The intel_ring_setup_status_page() does a posting read anyway, so it is not
> an ordering issue. So this is back in the magic read territory, can you try
> with a msleep(10) instead of the read just to confirm that it is the read
> doing the trick and not an extra delay?

With msleep() used instead of the register read, the problem triggers fully
reliably again; i.e. the "magic read" really does some trick, although it's not
a complete cure.

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