From ea75deef1a738d25502cfbb2caa564270b271525 Mon Sep 17 00:00:00 2001
From: Richard Fitzgerald <rf@opensource.cirrus.com>
Date: Mon, 15 Aug 2022 13:31:38 +0100
Subject: [PATCH] ASoC: cs42l42: Only report button state if there was a button interrupt
Git-commit: ea75deef1a738d25502cfbb2caa564270b271525
Patch-mainline: v6.0-rc5
References: git-fixes

Only report a button state change if the interrupt status shows that
there was a button event.

Previously the code would always drop into the button reporting at the
end of interrupt handling if the jack was present. If neither of the
button report interrupts were pending it would report all buttons
released. This could then lead to a button being reported as released
while it is still pressed.

Fixes: c5b8ee0879bc ("ASoC: cs42l42: Report jack and button detection")
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220815123138.3810249-1-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 sound/soc/codecs/cs42l42.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c
index d545a593a251..daafd4251ce6 100644
--- a/sound/soc/codecs/cs42l42.c
+++ b/sound/soc/codecs/cs42l42.c
@@ -1617,7 +1617,6 @@ static irqreturn_t cs42l42_irq_thread(int irq, void *data)
 	unsigned int current_plug_status;
 	unsigned int current_button_status;
 	unsigned int i;
-	int report = 0;
 
 	mutex_lock(&cs42l42->irq_lock);
 	if (cs42l42->suspended) {
@@ -1711,13 +1710,15 @@ static irqreturn_t cs42l42_irq_thread(int irq, void *data)
 
 			if (current_button_status & CS42L42_M_DETECT_TF_MASK) {
 				dev_dbg(cs42l42->dev, "Button released\n");
-				report = 0;
+				snd_soc_jack_report(cs42l42->jack, 0,
+						    SND_JACK_BTN_0 | SND_JACK_BTN_1 |
+						    SND_JACK_BTN_2 | SND_JACK_BTN_3);
 			} else if (current_button_status & CS42L42_M_DETECT_FT_MASK) {
-				report = cs42l42_handle_button_press(cs42l42);
-
+				snd_soc_jack_report(cs42l42->jack,
+						    cs42l42_handle_button_press(cs42l42),
+						    SND_JACK_BTN_0 | SND_JACK_BTN_1 |
+						    SND_JACK_BTN_2 | SND_JACK_BTN_3);
 			}
-			snd_soc_jack_report(cs42l42->jack, report, SND_JACK_BTN_0 | SND_JACK_BTN_1 |
-								   SND_JACK_BTN_2 | SND_JACK_BTN_3);
 		}
 	}
 
-- 
2.35.3