[Bug 60802] Corruption with DMA ring on cayman

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=60802

--- Comment #59 from Alexandre Demers <alexandre.f.demers at gmail.com> ---
Alex, a couple of things changed in your last attachment. You removed the L2T
part, you reverted the "non_disp = 2" back to "non_disp = 1" and changed the
binary offset for 28 (instead of 27). Am I right to understand you set
"non_disp" back to 1 because your are offsetting one more bit (according to
your comment in v2)?

If that's right, I don't see how v3 is different from v2 except for the L2T
change. And since non_disp=1 is not set at all in the main branch, how would
that fix the corruption problem. Aren't we back to v0 for the L2T path (which
is broken) and to v2 for the T2L path (which is also not better)?

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