spi: spi_bfin: change handling of communication parameters
authorSonic Zhang <sonic.zhang@analog.com>
Wed, 5 Dec 2007 07:45:17 +0000 (23:45 -0800)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Wed, 5 Dec 2007 17:21:19 +0000 (09:21 -0800)
commitcc487e732089360727e60f9fdbe3ff6cc4ca3155
treea4037cc7b238b582c50ff0520c5a47822e0f83fc
parent12e17c4267a5b2a5ba77bd53a62388be641534b8
spi: spi_bfin: change handling of communication parameters

Fix SPI driver to work with SPI flash ST M25P16 on bf548

Currently the SPI driver enables the SPI controller and sets the SPI baud
register for each SPI transfer.  But they should never be changed within a SPI
message session, in which several SPI transfers are pumped.

This patch moves SPI setting to the begining of a message session, and
never disables SPI controller until an error occurs.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
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>
drivers/spi/spi_bfin5xx.c