tree f324e79410cde9dd51a0c931b2dbce70f1313e9a
parent 75c8915c0ca633f7c1839618bd5c6a5e26b24094
author Mike Rapoport <mike@compulab.co.il> 1239069656 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1239118267 -0700

SPI: add dma_alignment field to spi_master

Some SPI controllers have restrictions on DMAable buffers alignemt.
Currently if the buffer supplied by protocol driver is not properly
aligned, the controller silently performs transfer in PIO mode.  Addition
of dma_alignment field to spi_master allows protocol drivers to perform
proper alignment.

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Cc: Bryan Wu <bryan.wu@analog.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>