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authorLars-Peter Clausen <lars@metafoo.de>2010-05-24 21:57:33 +0200
committerLars-Peter Clausen <lars@metafoo.de>2011-02-22 11:02:40 +0100
commit3413b4ea250ff0b4142a154a2764e33979957e8b (patch)
treeb93cc44a5ee6880995f22bdc4601e0143b3f1472 /drivers/power
parenta2e5118c370e78c3841606e7edc7677c986325fa (diff)
downloadop-kernel-dev-3413b4ea250ff0b4142a154a2764e33979957e8b.zip
op-kernel-dev-3413b4ea250ff0b4142a154a2764e33979957e8b.tar.gz
bq27x00: Return -ENODEV for properties if the battery is not present
This patch changes get_property callback of the bq27x00 battery to return -ENODEV for properties other then the PROP_PRESENT if the battery is not present. The power subsystem core expects a driver to behave that way. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Rodolfo Giometti <giometti@linux.it> Tested-by: Grazvydas Ignotas <notasas@gmail.com>
Diffstat (limited to 'drivers/power')
-rw-r--r--drivers/power/bq27x00_battery.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c
index 1b06134..9f16666 100644
--- a/drivers/power/bq27x00_battery.c
+++ b/drivers/power/bq27x00_battery.c
@@ -252,16 +252,21 @@ static int bq27x00_battery_get_property(struct power_supply *psy,
{
int ret = 0;
struct bq27x00_device_info *di = to_bq27x00_device_info(psy);
+ int voltage = bq27x00_battery_voltage(di);
+
+ if (psp != POWER_SUPPLY_PROP_PRESENT && voltage <= 0)
+ return -ENODEV;
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
ret = bq27x00_battery_status(di, val);
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = voltage;
+ break;
case POWER_SUPPLY_PROP_PRESENT:
- val->intval = bq27x00_battery_voltage(di);
if (psp == POWER_SUPPLY_PROP_PRESENT)
- val->intval = val->intval <= 0 ? 0 : 1;
+ val->intval = voltage <= 0 ? 0 : 1;
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
val->intval = bq27x00_battery_current(di);
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