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sbs-battery: Don't trigger false supply_changed event 

power_supply_changed() events are triggerd based on the return value
of a get_property() call. However the property TECHNOLOGY is
hard-coded to LION in this driver, thus always succeeds.

So, with the battery removed, this triggers a false battery present
uevent. This uevent triggers a new query via power_supply_uevent()
which again starts to query all known properties and thus leads to
an infinite loop of battery present/not-present uevents.

This patch skips the battery presence detection for the hard-coded
property TECHNOLOGY.

Signed-off-by: Nikolaus Voss <n.voss@weinmann.de>
Acked-by Rhyland Klein <rklein@nvidia.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
This commit is contained in:
Nikolaus Voss 2012-05-09 08:30:44 +02:00 committed by Anton Vorontsov
parent ab37813f40
commit 5da50988a1
1 changed files with 1 additions and 1 deletions
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2
drivers/power/sbs-battery.c
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@ -469,7 +469,7 @@ static int sbs_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_TECHNOLOGY:
val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
break;
goto done; /* don't trigger power_supply_changed()! */
case POWER_SUPPLY_PROP_ENERGY_NOW:
case POWER_SUPPLY_PROP_ENERGY_FULL: