From: Markus Franke <markus.franke@s2002.tu-chemnitz.de>
Date: Wed, 11 Apr 2012 22:42:03 +0000 (+0200)
Subject: w1: Disable irqs during 1-wire bus operations, extend 1-wire reset pulse
X-Git-Tag: v3.5-rc1~147^2~87
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8f1e12512e9f1276b68c8b14a60961658c73336f;p=pandora-kernel.git

w1: Disable irqs during 1-wire bus operations, extend 1-wire reset pulse

This patch offers the possibility to disables irqs during w1_write_bit()
and w1_reset_bus() operations as timing requirements are very strict for
the 1-wire bus protocol. Per default interrupts are enabled but can be
disabled via the module parameter "w1_disable_irqs".

Extend 1-wire reset pulse length from 480us to 500us as 480us is the
minimum requirement for the 1-wire reset/presence pulse.

Signed-off-by: Markus Franke <franm@hrz.tu-chemnitz.de>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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