From: Michele Jr De Candia <michele.decandia@valueteam.com>
Date: Tue, 28 Jul 2009 14:33:03 +0000 (+0200)
Subject: i2c/tsl2550: Fix lux value in dark environment
X-Git-Tag: v2.6.27.30~25
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dd2d70a7ba542030c152cdc224d3d303e9b6e21a;p=pandora-kernel.git

i2c/tsl2550: Fix lux value in dark environment

commit 96f699ad09c8b3c55cd229506a9add0047838e3e upstream.

I've tested TSL2550 driver and I've found a bug: when light is off,
returned value from tsl2550_calculate_lux function is -1 when it should
be 0 (sensor correctly read that light was off).

I think the bug is that a zero c0 value (approximated value of ch0) is
misinterpreted as an error.

Signed-off-by: Michele Jr De Candia <michele.decandia@valueteam.com>
Acked-by: Rodolfo Giometti <giometti@linux.it>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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