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Commit b56100db authored by Nadav Haklai's avatar Nadav Haklai Committed by Eduardo Valentin
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thermal: armada: Fix possible overflow in the Armada 380 thermal sensor formula 



Update the coefficients so the calculation will not overrun the
unsigned long 32bits boundary

Signed-off-by: default avatarNadav Haklai <nadavh@marvell.com>
Reviewed-by: default avatarVictor Axelrod <victora@marvell.com>
Reviewed-by: default avatarNeta Zur Hershkovits <neta@marvell.com>
Signed-off-by: default avatarGregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: default avatarEduardo Valentin <edubezval@gmail.com>
parent 84866ee5

drivers/thermal/armada_thermal.c

+3 −3
Original line number Diff line number Diff line
@@ -224,9 +224,9 @@ static const struct armada_thermal_data armada380_data = { 
	.is_valid_shift = 10,

	.temp_shift = 0,

	.temp_mask = 0x3ff,

	.coef_b = 2931108200UL,

	.coef_m = 5000000UL,

	.coef_div = 10502,

	.coef_b = 1172499100UL,

	.coef_m = 2000096UL,

	.coef_div = 4201,

	.inverted = true,

};