]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
spi_s3c24xx: cache device setup data
authorBen Dooks <ben@simtec.co.uk>
Tue, 22 Sep 2009 23:46:14 +0000 (16:46 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 23 Sep 2009 14:39:44 +0000 (07:39 -0700)
commit570327d9f48b0be5ca626bcfd80266b7ee2001aa
tree273502722726dab6e8a1c1fa903e642d22be3373
parent6d61320707ac2960bc820616bd5921885b874780
spi_s3c24xx: cache device setup data

With the update to the spi_bitbang driver, the transfer setup code is
being called more often, and thus is often re-doing calculations that have
been done before.  The SPI layer allows our driver to add its own data to
each device so add a result cache to each device.

This should also remove the problem where we where directly setting up
registers in the setup call which meant we might overwrite the state of an
extant transfer.,

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
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>
drivers/spi/spi_s3c24xx.c