linux-kernel - RE: [PATCH] drivers/power/sbs-battery.c: don't trigger false supply

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Message-ID: <2C89F4165782854891CDE0F3198B753C14F523E30A@HQMAIL01.nvidia.com>
Date:	Wed, 9 May 2012 07:51:05 -0700
From:	Rhyland Klein <rklein@...dia.com>
To:	'Nikolaus Voss' <n.voss@...nmann.de>,
	"'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>
CC:	"'cbouatmailru@...il.com'" <cbouatmailru@...il.com>
Subject: RE: [PATCH] drivers/power/sbs-battery.c: don't trigger false
 supply_changed event

On Wed, 2012-05-09 at 2:31, Nikolaus Voss wrote:
>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>

Acked-by Rhyland Klein <rklein@...dia.com>

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