From: David Brownell <david-b@pacbell.net>
Date: Tue, 17 Jul 2007 11:04:02 +0000 (-0700)
Subject: SPI controller drivers: check for unsupported modes
X-Git-Tag: v2.6.23-rc1~700
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dccd573bb02aa011a4a7146c02c409ac0bd722a0;p=pandora-kernel.git

SPI controller drivers: check for unsupported modes

Minor SPI controller driver updates: make the setup() methods reject
spi->mode bits they don't support, by masking aginst the inverse of bits
they *do* support.  This insures against misbehavior later when new mode
bits get added.

Most controllers can't support SPI_LSB_FIRST; more handle SPI_CS_HIGH.
Support for all four SPI clock/transfer modes is routine.

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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