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authorDaniel Vetter <daniel.vetter@ffwll.ch>2012-10-21 06:52:39 -0400
committerDaniel Vetter <daniel.vetter@ffwll.ch>2012-10-24 09:12:48 -0400
commitb6e0e543f75729f207b9c72b0162ae61170635b2 (patch)
treef8889502424292299b63c5cf356bdda7aa6fbf8a /Documentation/netlabel
parent7f6658ef35a470cd641ea35a1da409c4bc5bae1e (diff)
drm/i915: clear the entire sdvo infoframe buffer
Like in the case of native hdmi, which is fixed already in commit adf00b26d18e1b3570451296e03bcb20e4798cdd Author: Paulo Zanoni <paulo.r.zanoni@intel.com> Date: Tue Sep 25 13:23:34 2012 -0300 drm/i915: make sure we write all the DIP data bytes we need to clear the entire sdvo buffer to avoid upsetting the display. Since infoframe buffer writing is now a bit more elaborate, extract it into it's own function. This will be useful if we ever get around to properly update the ELD for sdvo. Also #define proper names for the two buffer indexes with fixed usage. v2: Cite the right commit above, spotted by Paulo Zanoni. v3: I'm too stupid to paste the right commit. v4: Ben Hutchings noticed that I've failed to handle an underflow in my loop logic, breaking it for i >= length + 8. Since I've just lost C programmer license, use his solution. Also, make the frustrated 0-base buffer size a notch more clear. Reported-and-tested-by: Jürg Billeter <j@bitron.ch> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=25732 Cc: stable@vger.kernel.org Cc: Paulo Zanoni <przanoni@gmail.com> Cc: Ben Hutchings <ben@decadent.org.uk> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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