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Date: Tue, 21 Aug 2018 08:21:03 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Park Ju Hyung <qkrwngud825@...il.com>, Takashi Iwai <tiwai@...e.de> Subject: [PATCH 4.14 10/29] ALSA: hda - Sleep for 10ms after entering D3 on Conexant codecs 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Park Ju Hyung <qkrwngud825@...il.com> commit f59cf9a0551dd954ad8b752461cf19d9789f4b1d upstream. On rare occasions, we are still noticing that the internal speaker spitting out spurious noises even after adding the problematic codec to the list. Adding a 10ms artificial delay before rebooting fixes the issue entirely. Patch for Realtek codecs also adds the same amount of delay after entering D3. Signed-off-by: Park Ju Hyung <qkrwngud825@...il.com> Cc: <stable@...r.kernel.org> Signed-off-by: Takashi Iwai <tiwai@...e.de> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- sound/pci/hda/patch_conexant.c | 1 + 1 file changed, 1 insertion(+) --- a/sound/pci/hda/patch_conexant.c +++ b/sound/pci/hda/patch_conexant.c @@ -225,6 +225,7 @@ static void cx_auto_reboot_notify(struct snd_hda_codec_set_power_to_all(codec, codec->core.afg, AC_PWRST_D3); snd_hda_codec_write(codec, codec->core.afg, 0, AC_VERB_SET_POWER_STATE, AC_PWRST_D3); + msleep(10); } static void cx_auto_free(struct hda_codec *codec)
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