target: support zero allocation length in SBC commands
authorPaolo Bonzini <pbonzini@redhat.com>
Fri, 7 Sep 2012 15:30:40 +0000 (17:30 +0200)
committerNicholas Bellinger <nab@linux-iscsi.org>
Tue, 18 Sep 2012 00:13:38 +0000 (17:13 -0700)
commita50da144d048f9dbebed2b1441ed779d6bbbcd03
tree25290267964578f79c10590a6511d10b85e7de96
parent7a3f369ce31694017996524a1cdb08208a839077
target: support zero allocation length in SBC commands

READ CAPACITY must be subject to the same treatment as INQUIRY,
REQUEST SENSE, and MODE SENSE, but there are no pre-existing bugs
to fix here.  Just use an on-stack buffer, and copy to it after
checking the return value of transport_kmap_data_sg.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
drivers/target/target_core_sbc.c