tree c0d1e01d49fdb3f288da28ffc3b349810c4e1b61
parent 7d0771970c51e736758525dd71fb82dd036b823a
author David Brownell <dbrownell@users.sourceforge.net> 1245281164 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1245355422 -0700

spi: move more spi_setup() functionality into core

Move some common spi_setup() error checks into the SPI framework from the
spi_master controller drivers:

 - Add a new "mode_bits" field to spi_master

 - Use that in spi_setup to validate the spi->mode value being
   requested.  Setting this new field is now mandatory for any
   controller supporting more than vanilla SPI_MODE_0.

 - Update all spi_master drivers to:

     * Initialize that field
     * Remove current spi_setup() checks using that value.

This is a net minor code shrink.

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>