linux-kernel - [PATCH 4/7] ASoC: codecs: lpass-rx-macro: drop dead mixer-path gain hack

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Tue, 16 Jan 2024 10:39:00 +0100
From: Johan Hovold <johan+linaro@...nel.org>
To: Mark Brown <broonie@...nel.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	Banajit Goswami <bgoswami@...cinc.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	alsa-devel@...a-project.org,
	linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH 4/7] ASoC: codecs: lpass-rx-macro: drop dead mixer-path gain hack

The vendor driver modifies the gain settings behind the back of user
space but some of these hacks never made it upstream except for some
essentially dead code that reads out the (cached) gain setting and
writes it back again on DAPM events.

Drop the incomplete and pointless hack when enabling mixer paths.

Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 sound/soc/codecs/lpass-rx-macro.c | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/sound/soc/codecs/lpass-rx-macro.c b/sound/soc/codecs/lpass-rx-macro.c
index f35187d69cac..b1ec41eed851 100644
--- a/sound/soc/codecs/lpass-rx-macro.c
+++ b/sound/soc/codecs/lpass-rx-macro.c
@@ -1956,10 +1956,9 @@ static int rx_macro_enable_main_path(struct snd_soc_dapm_widget *w,
 					int event)
 {
 	struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
-	u16 gain_reg, reg;
+	u16 reg;
 
 	reg = CDC_RX_RXn_RX_PATH_CTL(w->shift);
-	gain_reg = CDC_RX_RXn_RX_VOL_CTL(w->shift);
 
 	switch (event) {
 	case SND_SOC_DAPM_PRE_PMU:
@@ -1969,10 +1968,6 @@ static int rx_macro_enable_main_path(struct snd_soc_dapm_widget *w,
 						      CDC_RX_PATH_CLK_EN_MASK,
 						      CDC_RX_PATH_CLK_ENABLE);
 		break;
-	case SND_SOC_DAPM_POST_PMU:
-		snd_soc_component_write(component, gain_reg,
-			snd_soc_component_read(component, gain_reg));
-		break;
 	case SND_SOC_DAPM_POST_PMD:
 		rx_macro_enable_interp_clk(component, event, w->shift);
 		break;
@@ -3031,16 +3026,13 @@ static const struct snd_soc_dapm_widget rx_macro_dapm_widgets[] = {
 
 	SND_SOC_DAPM_MUX_E("RX INT0_1 INTERP", SND_SOC_NOPM, INTERP_HPHL, 0,
 		&rx_int0_1_interp_mux, rx_macro_enable_main_path,
-		SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
-		SND_SOC_DAPM_POST_PMD),
+		SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 	SND_SOC_DAPM_MUX_E("RX INT1_1 INTERP", SND_SOC_NOPM, INTERP_HPHR, 0,
 		&rx_int1_1_interp_mux, rx_macro_enable_main_path,
-		SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
-		SND_SOC_DAPM_POST_PMD),
+		SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 	SND_SOC_DAPM_MUX_E("RX INT2_1 INTERP", SND_SOC_NOPM, INTERP_AUX, 0,
 		&rx_int2_1_interp_mux, rx_macro_enable_main_path,
-		SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
-		SND_SOC_DAPM_POST_PMD),
+		SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 
 	SND_SOC_DAPM_MUX("RX INT0_2 INTERP", SND_SOC_NOPM, 0, 0,
 			 &rx_int0_2_interp_mux),
-- 
2.41.0