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(parent: 7db27b0) | patch
w1: disable irqs in critical section
authorJan Weitzel <j.weitzel@phytec.de>
Wed, 2 Nov 2011 20:40:02 +0000 (13:40 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 2 Nov 2011 23:07:03 +0000 (16:07 -0700)
commitad85d2838d114b44836b4af02331201f6d42da16
tree67bd829e0ef4e8e350af7fd06e4936bec616b49atree | snapshot
parent7db27b082c12d7038193da8e74e297bb6f810363commit | diff
w1: disable irqs in critical section

Interrupting w1_delay() in w1_read_bit() results in missing the low level
on the w1 line and receiving "1" instead of "0".

Add local_irq_save()/local_irq_restore() around the critical section

Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/w1/w1_io.c diff | blob | history
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