tree fcb5cac022d38af474c5243182a3c6f91de0b2ec
parent e675349e2bdbfb661fa0d8ff2441b4cf48fb7e48
author James Bottomley <James.Bottomley@HansenPartnership.com> 1208542728 -0500
committer Linus Torvalds <torvalds@linux-foundation.org> 1208542842 -0700

libata: fix boot panic with SATAPI devices on non-SFF HBAs

The kernel now panics reliably on boot if you have a SATAPI device
connected.

The problem was introduced by the libata merge trying to pull out all
the SFF code into a separate module.  Unfortunately, if you're a satapi
device you usually need to call atapi_request_sense, which has a bare
invocation of a SFF callback which is NULL on non-SFF HBAs.  Fix this by
making the call conditional.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>