• Takashi Iwai's avatar
    ALSA: hda - Don't resume forcibly i915 HDMI/DP codec · 68ffeea0
    Takashi Iwai authored
    commit 4914da2f upstream.
    
    We apply the codec resume forcibly at system resume callback for
    updating and syncing the jack detection state that may have changed
    during sleeping.  This is, however, superfluous for the codec like
    Intel HDMI/DP, where the jack detection is managed via the audio
    component notification; i.e. the jack state change shall be reported
    sooner or later from the graphics side at mode change.
    
    This patch changes the codec resume callback to avoid the forcible
    resume conditionally with a new flag, codec->relaxed_resume, for
    reducing the resume time.  The flag is set in the codec probe.
    
    Although this doesn't fix the entire bug mentioned in the bugzilla
    entry below, it's still a good optimization and some improvements are
    seen.
    
    Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=201901
    Cc: <stable@vger.kernel.org>
    Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    68ffeea0
patch_hdmi.c 107 KB