tree 98a5f30911f1b28f1b9c921b9112f199fb044c43
parent f9e522caece074b9a985436d611127e8e96ad446
author David Brownell <david-b@pacbell.net> 1207701718 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1207704353 -0700

spi: documentation tweaks

Update SPI documentation to clarify some areas of recent confusion: clock
polarity takes effect when chipselect goes active; and zero length buffers are
OK in certain cases.

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>