This is a note to let you know that I've just added the patch titled
ASoC: da7219: Check for failure reading AAD IRQ events
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-da7219-check-for-failure-reading-aad-irq-events.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 9393defae2a3046b862e4707ae0da4ed203aa30f
Author: Dmytro Maluka <dmy@xxxxxxxxxxxx>
Date: Mon Jul 17 21:37:37 2023 +0200
ASoC: da7219: Check for failure reading AAD IRQ events
[ Upstream commit f0691dc16206f21b13c464434366e2cd632b8ed7 ]
When handling an AAD interrupt, if IRQ events read failed (for example,
due to i2c "Transfer while suspended" failure, i.e. when attempting to
read it while DA7219 is suspended, which may happen due to a spurious
AAD interrupt), the events array contains garbage uninitialized values.
So instead of trying to interprete those values and doing any actions
based on them (potentially resulting in misbehavior, e.g. reporting
bogus events), refuse to handle the interrupt.
Signed-off-by: Dmytro Maluka <dmy@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230717193737.161784-3-dmy@xxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/sound/soc/codecs/da7219-aad.c b/sound/soc/codecs/da7219-aad.c
index 29e24a0f923d5..7e18e007a639f 100644
--- a/sound/soc/codecs/da7219-aad.c
+++ b/sound/soc/codecs/da7219-aad.c
@@ -351,11 +351,15 @@ static irqreturn_t da7219_aad_irq_thread(int irq, void *data)
struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
u8 events[DA7219_AAD_IRQ_REG_MAX];
u8 statusa;
- int i, report = 0, mask = 0;
+ int i, ret, report = 0, mask = 0;
/* Read current IRQ events */
- regmap_bulk_read(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A,
- events, DA7219_AAD_IRQ_REG_MAX);
+ ret = regmap_bulk_read(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A,
+ events, DA7219_AAD_IRQ_REG_MAX);
+ if (ret) {
+ dev_warn_ratelimited(component->dev, "Failed to read IRQ events: %d\n", ret);
+ return IRQ_NONE;
+ }
if (!events[DA7219_AAD_IRQ_REG_A] && !events[DA7219_AAD_IRQ_REG_B])
return IRQ_NONE;
