[PATCH] ASoC: cs42l42: Only report button state if there was a button interrupt

[PATCH] ASoC: cs42l42: Only report button state if there was a button interrupt

[Richard Fitzgerald]

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>
---
 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);
 		}
 	}
 
-- 
2.30.2

[PATCH] ASoC: cs42l42: Only report button state if there was a button interrupt

[Richard Fitzgerald]

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>
---
 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);
 		}
 	}
 
-- 
2.30.2

Re: [PATCH] ASoC: cs42l42: Only report button state if there was a button interrupt

[Mark Brown]

On Mon, 15 Aug 2022 13:31:38 +0100, Richard Fitzgerald wrote:
> 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.
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/1] ASoC: cs42l42: Only report button state if there was a button interrupt
      commit: ea75deef1a738d25502cfbb2caa564270b271525

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark