On Wed, 8 Dec 2010 16:10:21 +0000, David Flynn <davidf@xxxxxxxxxxxx> wrote: > The DisplayPort standard (1.1a) states that: > The I2C-over-AUX Reply field is valid only when Native AUX CH Reply > field is AUX_ACK (00). When Native AUX CH Reply field is not 00, then, > I2C-over-AUX Reply field must be 00 and be ignored. > > This fixes broken EDID reading when using an active DisplayPort to > duallink DVI converter. If the AUX CH replier chooses to defer the > transaction, a short read occurs and erroneous data is returned as > the i2c reply due to a lack of length checking and failure to check > for AUX ACK. And it didn't break my bog standard DP setup. :) Applied to -fixes and tagged for stable. Thanks, -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
