From: Patrick Rudolph patrick.rudolph@9elements.com
[ 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 --- drivers/regulator/max5970-regulator.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/regulator/max5970-regulator.c b/drivers/regulator/max5970-regulator.c index bc88a40a88d4..830a1c4cd705 100644 --- a/drivers/regulator/max5970-regulator.c +++ b/drivers/regulator/max5970-regulator.c @@ -392,7 +392,7 @@ 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; }