This is a note to let you know that I've just added the patch titled
regulator (max5970): Fix IRQ handler
to the 6.6-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:
regulator-max5970-fix-irq-handler.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 733e15cdf27f1201aaa57e8d59fbfb100fa4c3ed
Author: Patrick Rudolph <patrick.rudolph@xxxxxxxxxxxxx>
Date: Tue Jan 30 20:32:56 2024 +0530
regulator (max5970): Fix IRQ handler
[ Upstream commit a3fa9838e8140584a6f338e8516f2b05d3bea812 ]
The max5970 datasheet gives the impression that IRQ status bits must
be cleared by writing a one to set bits, as those are marked with 'R/C',
however tests showed that a zero must be written.
Fixes an IRQ storm as the interrupt handler actually clears the IRQ
status bits.
Signed-off-by: Patrick Rudolph <patrick.rudolph@xxxxxxxxxxxxx>
Signed-off-by: Naresh Solanki <naresh.solanki@xxxxxxxxxxxxx>
Link: https://msgid.link/r/20240130150257.3643657-1-naresh.solanki@xxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/regulator/max5970-regulator.c b/drivers/regulator/max5970-regulator.c
index b56a174cde3df..5c2d49ae332fb 100644
--- a/drivers/regulator/max5970-regulator.c
+++ b/drivers/regulator/max5970-regulator.c
@@ -265,7 +265,7 @@ static int max597x_regmap_read_clear(struct regmap *map, unsigned int reg,
return ret;
if (*val)
- return regmap_write(map, reg, *val);
+ return regmap_write(map, reg, 0);
return 0;
}
