4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Kailang Yang <kailang@xxxxxxxxxxx> 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@xxxxxxxxxxx> Signed-off-by: Takashi Iwai <tiwai@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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;