> On Jun 30, 2017, at 9:10 AM, Arnd Bergmann <arnd@xxxxxxxx> wrote:
>
> When NVMe support is disabled, we get a couple of harmless warnings:
>
> drivers/scsi/qla2xxx/qla_nvme.c:667:13: error: 'qla_nvme_unregister_remote_port' defined but not used [-Werror=unused-function]
> drivers/scsi/qla2xxx/qla_nvme.c:634:13: error: 'qla_nvme_abort_all' defined but not used [-Werror=unused-function]
> drivers/scsi/qla2xxx/qla_nvme.c:604:12: error: 'qla_nvme_wait_on_rport_del' defined but not used [-Werror=unused-function]
>
> This replaces the preprocessor checks in the code with equivalent
> compiler conditionals, which lets gcc drop the unused functions
> without warning, and is nicer to read.
>
> Fixes: e84067d74301 ("scsi: qla2xxx: Add FC-NVMe F/W initialization and transport registration")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
> drivers/scsi/qla2xxx/Kconfig | 1 +
> drivers/scsi/qla2xxx/qla_nvme.c | 20 ++++++++++++--------
> 2 files changed, 13 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/scsi/qla2xxx/Kconfig b/drivers/scsi/qla2xxx/Kconfig
> index de952935b5d2..036cc3f217b1 100644
> --- a/drivers/scsi/qla2xxx/Kconfig
> +++ b/drivers/scsi/qla2xxx/Kconfig
> @@ -2,6 +2,7 @@ config SCSI_QLA_FC
> tristate "QLogic QLA2XXX Fibre Channel Support"
> depends on PCI && SCSI
> depends on SCSI_FC_ATTRS
> + depends on NVME_FC || !NVME_FC
> select FW_LOADER
> select BTREE
> ---help---
> diff --git a/drivers/scsi/qla2xxx/qla_nvme.c b/drivers/scsi/qla2xxx/qla_nvme.c
> index 14e25e32e622..9c18d754ac33 100644
> --- a/drivers/scsi/qla2xxx/qla_nvme.c
> +++ b/drivers/scsi/qla2xxx/qla_nvme.c
> @@ -17,10 +17,12 @@ static void qla_nvme_unregister_remote_port(struct work_struct *);
>
> int qla_nvme_register_remote(scsi_qla_host_t *vha, fc_port_t *fcport)
> {
> -#if (IS_ENABLED(CONFIG_NVME_FC))
> struct nvme_rport *rport;
> int ret;
>
> + if (!IS_ENABLED(CONFIG_NVME_FC))
> + return 0;
> +
> if (fcport->nvme_flag & NVME_FLAG_REGISTERED)
> return 0;
>
> @@ -78,7 +80,6 @@ int qla_nvme_register_remote(scsi_qla_host_t *vha, fc_port_t *fcport)
> init_waitqueue_head(&fcport->nvme_waitQ);
> rport->fcport = fcport;
> list_add_tail(&rport->list, &vha->nvme_rport_list);
> -#endif
> return 0;
> }
>
> @@ -666,11 +667,13 @@ static void qla_nvme_abort_all(fc_port_t *fcport)
>
> static void qla_nvme_unregister_remote_port(struct work_struct *work)
> {
> -#if (IS_ENABLED(CONFIG_NVME_FC))
> struct fc_port *fcport = container_of(work, struct fc_port,
> nvme_del_work);
> struct nvme_rport *rport, *trport;
>
> + if (!IS_ENABLED(CONFIG_NVME_FC))
> + return;
> +
> list_for_each_entry_safe(rport, trport,
> &fcport->vha->nvme_rport_list, list) {
> if (rport->fcport == fcport) {
> @@ -680,16 +683,17 @@ static void qla_nvme_unregister_remote_port(struct work_struct *work)
> fcport->nvme_remote_port);
> }
> }
> -#endif
> }
>
> void qla_nvme_delete(scsi_qla_host_t *vha)
> {
> -#if (IS_ENABLED(CONFIG_NVME_FC))
> struct nvme_rport *rport, *trport;
> fc_port_t *fcport;
> int nv_ret;
>
> + if (!IS_ENABLED(CONFIG_NVME_FC))
> + return;
> +
> list_for_each_entry_safe(rport, trport, &vha->nvme_rport_list, list) {
> fcport = rport->fcport;
>
> @@ -711,17 +715,18 @@ void qla_nvme_delete(scsi_qla_host_t *vha)
> ql_log(ql_log_info, vha, 0x2115,
> "Unregister of localport failed\n");
> }
> -#endif
> }
>
> void qla_nvme_register_hba(scsi_qla_host_t *vha)
> {
> -#if (IS_ENABLED(CONFIG_NVME_FC))
> struct nvme_fc_port_template *tmpl;
> struct qla_hw_data *ha;
> struct nvme_fc_port_info pinfo;
> int ret;
>
> + if (!IS_ENABLED(CONFIG_NVME_FC))
> + return;
> +
> ha = vha->hw;
> tmpl = &qla_nvme_fc_transport;
>
> @@ -752,5 +757,4 @@ void qla_nvme_register_hba(scsi_qla_host_t *vha)
> atomic_set(&vha->nvme_ref_count, 1);
> vha->nvme_local_port->private = vha;
> init_waitqueue_head(&vha->nvme_waitQ);
> -#endif
> }
> --
> 2.9.0
>
Looks Good.
Acked-By: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
Thanks,
- Himanshu
