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authorDavid Brownell <david-b@pacbell.net>2007-07-19 01:47:52 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-19 10:04:43 -0700
commita0a9983509f45b2225ca87fdcf7b40ea916834ed (patch)
treea70151c57f184bccd24175fa19a585021e297973 /fs/proc
parente53252d97e670a38b1d2e9723b48077bba11ddda (diff)
gpio calls don't need i/o barriers
Clarify that drivers using the GPIO operations don't need to issue io barrier instructions themselves. Previously this wasn't clear, and at least one platform assumed otherwise (and would thus break various otherwise-portable drivers which don't issue barriers). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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