Re: [PATCH -next] scsi: megaraid_sas: Remove a bunch of set but not used variables

From: Sumit Saxena
Date: Fri Feb 22 2019 - 07:16:52 EST

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In reply to: Yue Haibing: "[PATCH -next] scsi: megaraid_sas: Remove a bunch of set but not used variables"
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On Fri, Feb 22, 2019 at 7:30 AM Yue Haibing <yuehaibing@xxxxxxxxxx> wrote:
>
> From: YueHaibing <yuehaibing@xxxxxxxxxx>
>
> Fixes gcc '-Wunused-but-set-variable' warning:
>
> drivers/scsi/megaraid/megaraid_sas_fusion.c: In function 'wait_and_poll':
> drivers/scsi/megaraid/megaraid_sas_fusion.c:936:25: warning:
> variable 'fusion' set but not used [-Wunused-but-set-variable]
>
> drivers/scsi/megaraid/megaraid_sas_fusion.c: In function 'megasas_sync_map_info':
> drivers/scsi/megaraid/megaraid_sas_fusion.c:1329:6: warning:
> variable 'size_sync_info' set but not used [-Wunused-but-set-variable]
>
> drivers/scsi/megaraid/megaraid_sas_fusion.c: In function 'megasas_init_adapter_fusion':
> drivers/scsi/megaraid/megaraid_sas_fusion.c:1639:39: warning:
> variable 'reg_set' set but not used [-Wunused-but-set-variable]
>
> drivers/scsi/megaraid/megaraid_sas_fusion.c: In function 'megasas_is_prp_possible':
> drivers/scsi/megaraid/megaraid_sas_fusion.c:1925:25: warning:
> variable 'fusion' set but not used [-Wunused-but-set-variable]
>
> drivers/scsi/megaraid/megaraid_sas_fusion.c: In function 'megasas_make_prp_nvme':
> drivers/scsi/megaraid/megaraid_sas_fusion.c:2047:25: warning:
> variable 'fusion' set but not used [-Wunused-but-set-variable]
>
> drivers/scsi/megaraid/megaraid_sas_fusion.c: In function 'megasas_build_ldio_fusion':
> drivers/scsi/megaraid/megaraid_sas_fusion.c:2620:42: warning:
> variable 'req_desc' set but not used [-Wunused-but-set-variable]
>
> drivers/scsi/megaraid/megaraid_sas_fusion.c: In function 'megasas_build_and_issue_cmd_fusion':
> drivers/scsi/megaraid/megaraid_sas_fusion.c:3245:25: warning:
> variable 'fusion' set but not used [-Wunused-but-set-variable]
>
> drivers/scsi/megaraid/megaraid_sas_fusion.c: In function 'megasas_task_abort_fusion':
> drivers/scsi/megaraid/megaraid_sas_fusion.c:4398:25: warning:
> variable 'fusion' set but not used [-Wunused-but-set-variable]
>
> drivers/scsi/megaraid/megaraid_sas_fusion.c: In function 'megasas_reset_target_fusion':
> drivers/scsi/megaraid/megaraid_sas_fusion.c:4484:25: warning:
> variable 'fusion' set but not used [-Wunused-but-set-variable]
>
> They're not used anymore and can be removed.
>
> Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>

Acked-by: Sumit Saxena <sumit.saxena@xxxxxxxxxxxx>

> ---
> drivers/scsi/megaraid/megaraid_sas_fusion.c | 26 --------------------------
> 1 file changed, 26 deletions(-)
>
> diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
> index fd44e00..1d17128 100644
> --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
> +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
> @@ -937,11 +937,9 @@ wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
> {
> int i;
> struct megasas_header *frame_hdr = &cmd->frame->hdr;
> - struct fusion_context *fusion;
>
> u32 msecs = seconds * 1000;
>
> - fusion = instance->ctrl_context;
> /*
> * Wait for cmd_status to change
> */
> @@ -1331,7 +1329,6 @@ megasas_sync_map_info(struct megasas_instance *instance)
> struct megasas_cmd *cmd;
> struct megasas_dcmd_frame *dcmd;
> u16 num_lds;
> - u32 size_sync_info;
> struct fusion_context *fusion;
> struct MR_LD_TARGET_SYNC *ci = NULL;
> struct MR_DRV_RAID_MAP_ALL *map;
> @@ -1360,8 +1357,6 @@ megasas_sync_map_info(struct megasas_instance *instance)
>
> dcmd = &cmd->frame->dcmd;
>
> - size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds;
> -
> memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
>
> ci = (struct MR_LD_TARGET_SYNC *)
> @@ -1640,15 +1635,12 @@ static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance)
> u32
> megasas_init_adapter_fusion(struct megasas_instance *instance)
> {
> - struct megasas_register_set __iomem *reg_set;
> struct fusion_context *fusion;
> u32 scratch_pad_1;
> int i = 0, count;
>
> fusion = instance->ctrl_context;
>
> - reg_set = instance->reg_set;
> -
> megasas_fusion_update_can_queue(instance, PROBE_CONTEXT);
>
> /*
> @@ -1927,7 +1919,6 @@ static bool
> megasas_is_prp_possible(struct megasas_instance *instance,
> struct scsi_cmnd *scmd, int sge_count)
> {
> - struct fusion_context *fusion;
> int i;
> u32 data_length = 0;
> struct scatterlist *sg_scmd;
> @@ -1936,7 +1927,6 @@ megasas_is_prp_possible(struct megasas_instance *instance,
>
> mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
> MR_DEFAULT_NVME_PAGE_SIZE);
> - fusion = instance->ctrl_context;
> data_length = scsi_bufflen(scmd);
> sg_scmd = scsi_sglist(scmd);
>
> @@ -2049,12 +2039,9 @@ megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd,
> u32 first_prp_len;
> bool build_prp = false;
> int data_len = scsi_bufflen(scmd);
> - struct fusion_context *fusion;
> u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
> MR_DEFAULT_NVME_PAGE_SIZE);
>
> - fusion = instance->ctrl_context;
> -
> build_prp = megasas_is_prp_possible(instance, scmd, sge_count);
>
> if (!build_prp)
> @@ -2622,7 +2609,6 @@ megasas_build_ldio_fusion(struct megasas_instance *instance,
> u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
> u32 scsi_buff_len;
> struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
> - union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
> struct IO_REQUEST_INFO io_info;
> struct fusion_context *fusion;
> struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
> @@ -2645,8 +2631,6 @@ megasas_build_ldio_fusion(struct megasas_instance *instance,
> rctx->status = 0;
> rctx->ex_status = 0;
>
> - req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
> -
> start_lba_lo = 0;
> start_lba_hi = 0;
> fp_possible = false;
> @@ -3247,9 +3231,6 @@ megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
> struct megasas_cmd_fusion *cmd, *r1_cmd = NULL;
> union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
> u32 index;
> - struct fusion_context *fusion;
> -
> - fusion = instance->ctrl_context;
>
> if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) &&
> instance->ldio_threshold &&
> @@ -4402,14 +4383,11 @@ int megasas_task_abort_fusion(struct scsi_cmnd *scmd)
> {
> struct megasas_instance *instance;
> u16 smid, devhandle;
> - struct fusion_context *fusion;
> int ret;
> struct MR_PRIV_DEVICE *mr_device_priv_data;
> mr_device_priv_data = scmd->device->hostdata;
>
> -
> instance = (struct megasas_instance *)scmd->device->host->hostdata;
> - fusion = instance->ctrl_context;
>
> scmd_printk(KERN_INFO, scmd, "task abort called for scmd(%p)\n", scmd);
> scsi_print_command(scmd);
> @@ -4429,7 +4407,6 @@ int megasas_task_abort_fusion(struct scsi_cmnd *scmd)
> goto out;
> }
>
> -
> if (!mr_device_priv_data->is_tm_capable) {
> ret = FAILED;
> goto out;
> @@ -4488,12 +4465,10 @@ int megasas_reset_target_fusion(struct scsi_cmnd *scmd)
> struct megasas_instance *instance;
> int ret = FAILED;
> u16 devhandle;
> - struct fusion_context *fusion;
> struct MR_PRIV_DEVICE *mr_device_priv_data;
> mr_device_priv_data = scmd->device->hostdata;
>
> instance = (struct megasas_instance *)scmd->device->host->hostdata;
> - fusion = instance->ctrl_context;
>
> sdev_printk(KERN_INFO, scmd->device,
> "target reset called for scmd(%p)\n", scmd);
> @@ -4513,7 +4488,6 @@ int megasas_reset_target_fusion(struct scsi_cmnd *scmd)
> goto out;
> }
>
> -
> if (!mr_device_priv_data->is_tm_capable) {
> ret = FAILED;
> goto out;
> --
> 2.7.0
>
>

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In reply to: Yue Haibing: "[PATCH -next] scsi: megaraid_sas: Remove a bunch of set but not used variables"
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