| commit | 8c0a6bfef165ccdbf5d73afb9dd660107b0c98d5 | [log] [tgz] |
|---|---|---|
| author | Chris Wilson <[email protected]> | Thu Dec 09 12:56:37 2010 +0000 |
| committer | Chris Wilson <[email protected]> | Thu Dec 09 12:53:19 2010 +0000 |
| tree | 09455156e4e46ac5137ddab9ec3aed65bc6a8c59 | |
| parent | 8316f33766a82907c694267ff911e45e256f09f9 [diff] |
drm/i915/ringbuffer: Handle wrapping of the autoreported HEAD If the tail advances beyond the autoreport HEAD value, then we need to fallback to an uncached read of the HEAD register in order to ascertain the correct amount of remaining space in the ringbuffer. Reported-by: Fang, Xun <[email protected]> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32259 Signed-off-by: Chris Wilson <[email protected]>