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regulator (max5970): Fix IRQ handler

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[ 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@9elements.com>
Signed-off-by: Naresh Solanki <naresh.solanki@9elements.com>
Link: https://msgid.link/r/20240130150257.3643657-1-naresh.solanki@9elements.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Patrick Rudolph 2024-01-30 20:32:56 +05:30 committed by Greg Kroah-Hartman
parent 04d46a9564
commit f7d799076a
1 changed files with 1 additions and 1 deletions
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2
drivers/regulator/max5970-regulator.c
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@ -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;
}