From 0e9f30497e88600ba52013665270f543bb94f0d8 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 24 May 2010 20:20:57 +0200 Subject: [PATCH] bq27x00: Improve temperature property precession This patch improves the precession of the temperature property of the bq27x00 driver. By dividing before multiplying the current code effectively cuts of the last decimal digit. This patch fixes it by multiplying before dividing. Signed-off-by: Lars-Peter Clausen Acked-by: Rodolfo Giometti Tested-by: Grazvydas Ignotas --- drivers/power/bq27x00_battery.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c index bb043f9..4f74659 100644 --- a/drivers/power/bq27x00_battery.c +++ b/drivers/power/bq27x00_battery.c @@ -109,7 +109,7 @@ static int bq27x00_battery_temperature(struct bq27x00_device_info *di) if (di->chip == BQ27500) return temp - 2731; else - return ((temp >> 2) - 273) * 10; + return ((temp * 5) - 5463) / 2; } /* -- 2.7.4