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authorBernhard Walle <walle@corscience.de>2010-11-18 12:27:33 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-11-18 15:00:46 -0800
commitebde7b062cd9e2ea968c93f23f73dd28c0a192d1 (patch)
tree143d247e7d9c3e505961d769494bd267c14c5078 /Documentation/fault-injection
parent09c9feb94672bdb3ca6d424a292ffc26eff8ca0b (diff)
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Documentation/gpio.txt: explain poll/select usage
Add a bit more information how to use poll(2) on GPIO value files correctly. For me it was not clear that I need to poll(2) for POLLPRI|POLLERR or select(2) for exceptfds. Signed-off-by: Bernhard Walle <walle@corscience.de> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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