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authorMarkus Franke <markus.franke@s2002.tu-chemnitz.de>2012-04-12 00:42:03 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-04-11 16:44:10 -0700
commit8f1e12512e9f1276b68c8b14a60961658c73336f (patch)
tree370742441c08ea56dae64e9d7cfa9b53bad3d75a /fs/fuse
parentf19420c1acb0b573c88a12deb2d42035e22d4a17 (diff)
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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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