Hi Martin, This patch series introduces enums for the SAM, message, host and driver status codes and hence improves static type checking by the compiler. Please consider this patch series for kernel v5.14. Thanks, Bart. Changes compared to v2: - Changed SAS_STAT_ prefix into SAS_SAM_STAT_. Changes compared to v1: - Modified the comment block at the start of the enum exec_status definition in libsas.h. - Changed the __SAM_STAT_ prefix into SAS_STAT_ for the SAM status codes that are also used in the SAS code. - Restored the reverse-Christmas tree style in two functions. - Renamed enum host_status and driver_status into enum scsi_host_status and scsi_driver_status respectively. Bart Van Assche (3): libsas: Introduce more SAM status code aliases in enum exec_status Introduce enums for the SAM, message, host and driver status codes Change the type of the second argument of scsi_host_complete_all_commands() drivers/scsi/aic94xx/aic94xx_task.c | 2 +- drivers/scsi/constants.c | 4 +- drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 8 +-- drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 8 +-- drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 8 +-- drivers/scsi/hosts.c | 8 ++- drivers/scsi/isci/request.c | 10 +-- drivers/scsi/isci/task.c | 2 +- drivers/scsi/libsas/sas_ata.c | 7 +- drivers/scsi/libsas/sas_expander.c | 2 +- drivers/scsi/libsas/sas_task.c | 4 +- drivers/scsi/mvsas/mv_sas.c | 10 +-- drivers/scsi/pm8001/pm8001_hwi.c | 16 ++--- drivers/scsi/pm8001/pm8001_sas.c | 4 +- drivers/scsi/pm8001/pm80xx_hwi.c | 14 ++-- drivers/target/target_core_pscsi.c | 2 +- include/scsi/libsas.h | 12 +++- include/scsi/scsi.h | 81 +---------------------- include/scsi/scsi_host.h | 2 +- include/scsi/scsi_proto.h | 24 +++---- include/scsi/scsi_status.h | 89 ++++++++++++++++++++++++++ 21 files changed, 170 insertions(+), 147 deletions(-) create mode 100644 include/scsi/scsi_status.h