zfcp updates for v4.21

James, Martin,

this is the zfcp patch set for the v4.21 merge window. The patches apply to Martin's 4.21/scsi-queue and to James' misc branch.

Patch 1 is a small feature to select DIF only without DIX.

Patches 2-23 are cleanups including resolving new build warnings.

Fedor Loshakov (1):
zfcp: make DIX experimental, disabled, and independent of DIF

Steffen Maier (21):
zfcp: move SG table helper from aux to fc and make them static
zfcp: drop unnecessary forward prototype for struct zfcp_reqlist
zfcp: move scsi_eh & non-ERP timeout defines owned by and local to
zfcp_fsf.c
zfcp: update width in comment for ZFCP_COMMON_FLAGS mask
zfcp: namespace prefix for internal latency data structures
zfcp: group sort internal structure definitions for proximity
zfcp: drop unnecessary forward prototype for struct zfcp_fsf_req
zfcp: drop duplicate fsf_command from zfcp_fsf_req which is also in
QTCB header
zfcp: drop duplicate seq_no from zfcp_fsf_req which is also in QTCB
header
zfcp: update kernel message for invalid FCP_CMND length, it's not the
CDB
zfcp: ERP thread setup kdoc update
zfcp: clarify function argument name for trace tag string
zfcp: the action field of zfcp_erp_action is actually the type
zfcp: use enum zfcp_erp_steps for struct zfcp_erp_action.step
zfcp: use enum zfcp_erp_act_result for argument/return of affected
functions
zfcp: properly format LUN (and WWPN) for LUN sharing violation kmsg
zfcp: silence all W=1 build warnings for existing kdoc
zfcp: silence remaining kdoc warnings in header files
zfcp: silence -Wimplicit-fallthrough in zfcp_erp_lun_strategy()
zfcp: drop default switch case which might paper over missing case
zfcp: drop old default switch case which might paper over missing case

zhong jiang (1):
zfcp: remove unnecessary null pointer check before mempool_destroy

2.16.4