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authorRafael J. Wysocki <rjw@sisk.pl>2008-12-05 01:07:51 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2008-12-04 21:43:16 -0800
commitaaad077638be1a25871bcae5e43952d6b63abfca (patch)
tree874d52d1b88a04f1a12ea1552a8be0ff82ff4e74 /drivers/acpi
parent4857339d7c01cd81ce8872da2d1f9183b07b1c87 (diff)
ACPI: Fix ACPI battery regression introduced by commit 558073
Commit 558073dd56707864f09d563b64e7c37c021e89d2 ("ACPI: battery: Convert discharge energy rate to current properly") caused the battery subsystem to report wrong values of the remaining time on battery power and the time until fully charged on Toshiba Portege R500 (and presumably on other boxes too). Fix the issue by correcting the conversion from mW to mA. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/battery.c17
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index a0a178dd189..4fb3c12ac1d 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -173,14 +173,17 @@ static int acpi_battery_get_property(struct power_supply *psy,
val->intval = battery->voltage_now * 1000;
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
- val->intval = battery->current_now * 1000;
- /* if power units are mW, convert to mA by
- dividing by current voltage (mV/1000) */
- if (!battery->power_unit) {
- if (battery->voltage_now) {
+ val->intval = battery->current_now;
+ if (battery->power_unit) {
+ val->intval *= 1000;
+ } else {
+ /*
+ * If power units are mW, convert to mA by dividing by
+ * current voltage.
+ */
+ if (battery->voltage_now)
val->intval /= battery->voltage_now;
- val->intval *= 1000;
- } else
+ else
val->intval = -1;
}
break;