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Date: Wed, 9 May 2012 08:30:44 +0200 From: Nikolaus Voss <n.voss@...nmann.de> To: linux-kernel@...r.kernel.org Cc: cbouatmailru@...il.com, rklein@...dia.com Subject: [PATCH] drivers/power/sbs-battery.c: 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@...nmann.de> --- drivers/power/sbs-battery.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/power/sbs-battery.c b/drivers/power/sbs-battery.c index 182d2ed..ef142f8 100644 --- a/drivers/power/sbs-battery.c +++ b/drivers/power/sbs-battery.c @@ -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: -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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