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Commit a3b48c88 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: hda - minor optimization in hda_set_power_state() 



Check the target power-state before checking EAPD exception to reduce
unneeded verb executions.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent b97bedcd

sound/pci/hda/hda_codec.c

+3 −2
Original line number Diff line number Diff line
@@ -2348,7 +2348,8 @@ static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg, 
		if (wcaps & AC_WCAP_POWER) {

			unsigned int wid_type = (wcaps & AC_WCAP_TYPE) >>

				AC_WCAP_TYPE_SHIFT;

			if (wid_type == AC_WID_PIN) {

			if (power_state == AC_PWRST_D3 &&

			    wid_type == AC_WID_PIN) {

				unsigned int pincap;

				/*

				 * don't power down the widget if it controls
@@ -2360,7 +2361,7 @@ static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg, 
						nid, 0,

						AC_VERB_GET_EAPD_BTLENABLE, 0);

					eapd &= 0x02;

					if (power_state == AC_PWRST_D3 && eapd)

					if (eapd)

						continue;

				}

			}