target: Add control CDB READ payload zero work-around
authorNicholas Bellinger <nab@linux-iscsi.org>
Tue, 2 Oct 2012 21:00:33 +0000 (14:00 -0700)
committerNicholas Bellinger <nab@linux-iscsi.org>
Tue, 2 Oct 2012 21:16:19 +0000 (14:16 -0700)
commit944981c7e106af2aa004847e9177497856630980
treecc3f3e84f26a13c18adb7b84055147ed9ea45b88
parent8f9f44f8957b262de717a48269a5ceca36c2b504
target: Add control CDB READ payload zero work-around

This patch carries forward a work-around from tcm_loop to target
core code to explicitly clear control CDB READ paylods in order to
avoid bugs in scsi-generic user-space code for INQUIRY that do not
explicitly zero CDB payload memory.

(v2: Drop TARGET_SCF_MAP_CLEAR_MEM, and perform the explicit zero
     of READ memory for all target_submit_cmd_map_sgls users)

Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
drivers/target/target_core_transport.c