tree 92fb528eac658adbc7307a009bd8a7558db2658a
parent 350756f6dab6d37ef9ed3f18dec520e88969ddac
author Tejun Heo <htejun@gmail.com> 1207576041 +0900
committer Jeff Garzik <jgarzik@redhat.com> 1208461464 -0400

libata: make SFF support optional

Now that SFF support is completely separated out from the core layer,
it can be made optional.  Add CONFIG_ATA_SFF and let SFF drivers
depend on it.  If CONFIG_ATA_SFF isn't set, all codes in libata-sff.c
and data structures for SFF support are disabled.  This saves good
number of bytes for small systems.

Signed-off-by: Tejun Heo <htejun@gmail.com>