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    Subject[PATCH 4.14 092/193] ALSA: hda/realtek - Fix ALC275 no sound issue
    Date
    4.14-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Kailang Yang <kailang@realtek.com>

    commit 3aabf94c2d95fe465d5fa8590113d1c1f7d8333d upstream.

    Sound works after a cold boot but not after a reboot from windows.
    This patch will solve this issue. This is relation with Class-D power control.

    [ The bug was reported in Bugzilla below for Sony VAIO SVS13A1C5E
    -- tiwai]

    Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=197737
    Signed-off-by: Kailang Yang <kailang@realtek.com>
    Signed-off-by: Takashi Iwai <tiwai@suse.de>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    sound/pci/hda/patch_realtek.c | 3 +++
    1 file changed, 3 insertions(+)

    --- a/sound/pci/hda/patch_realtek.c
    +++ b/sound/pci/hda/patch_realtek.c
    @@ -341,6 +341,9 @@ static void alc_fill_eapd_coef(struct hd
    case 0x10ec0299:
    alc_update_coef_idx(codec, 0x10, 1<<9, 0);
    break;
    + case 0x10ec0275:
    + alc_update_coef_idx(codec, 0xe, 0, 1<<0);
    + break;
    case 0x10ec0293:
    alc_update_coef_idx(codec, 0xa, 1<<13, 0);
    break;

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