<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [BDW][Audio][HD-A Display] DP/HDMI audio playback abnormal" href="https://bugs.freedesktop.org/show_bug.cgi?id=91410#c24">Comment # 24</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [BDW][Audio][HD-A Display] DP/HDMI audio playback abnormal" href="https://bugs.freedesktop.org/show_bug.cgi?id=91410">bug 91410</a> from <a class="email" href="mailto:jim.bride@linux.intel.com" title="Jim Bride <jim.bride@linux.intel.com>"> Jim Bride</a> <pre>I'm not so sure that this is a race per se. From the brief look I took at the HDA driver, it seems that the audio code believes that CDCLK stays at a fixed value and thus it only confirms the value during its initial init and when a resume operation occurs. Since CDCLK can be changed at various times on some platforms, it seems like what we need is some sort of a callback mechanism to notify the audio driver when CDCLK gets set to a new value so that they can update their M/N values appropriately. Alternately, although I'd leave this determination to folks that are more familiar with the audio driver, if there's a good spot where they can call snd_hdac_get_display_clk() periodically and update their M/N values if the new value differs from the previous value that they have then that would work too. Thoughts?</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>