scsi: 3w-9xxx: Remove a few set but unused variables

Fixes the following W=1 kernel build warning(s):

 drivers/scsi/3w-9xxx.c: In function ‘twa_empty_response_queue’:
 drivers/scsi/3w-9xxx.c:942:24: warning: variable ‘response_que_value’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/3w-9xxx.c: In function ‘twa_scsi_biosparam’:
 drivers/scsi/3w-9xxx.c:1701:23: warning: variable ‘tw_dev’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/3w-9xxx.c: In function ‘twa_scsiop_execute_scsi’:
 drivers/scsi/3w-9xxx.c:1812:22: warning: variable ‘sglist’ set but not used [-Wunused-but-set-variable]

Link: https://lore.kernel.org/r/20210312094738.2207817-30-lee.jones@linaro.org
Cc: Adam Radford <aradford@gmail.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
index b96e82d..47028f5 100644 (file)
--- a/drivers/scsi/3w-9xxx.c
+++ b/drivers/scsi/3w-9xxx.c
@@ -939,13 +939,13 @@ out:
 /* This function will empty the response queue */
 static int twa_empty_response_queue(TW_Device_Extension *tw_dev)
 {
-       u32 status_reg_value, response_que_value;
+       u32 status_reg_value;
        int count = 0, retval = 1;
 
        status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
 
        while (((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) && (count < TW_MAX_RESPONSE_DRAIN)) {
-               response_que_value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
+               readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
                status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
                count++;
        }
@@ -1698,9 +1698,6 @@ out:
 static int twa_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[])
 {
        int heads, sectors, cylinders;
-       TW_Device_Extension *tw_dev;
-
-       tw_dev = (TW_Device_Extension *)sdev->host->hostdata;
 
        if (capacity >= 0x200000) {
                heads = 255;
@@ -1809,14 +1806,11 @@ static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id,
        u32 num_sectors = 0x0;
        int i, sg_count;
        struct scsi_cmnd *srb = NULL;
-       struct scatterlist *sglist = NULL, *sg;
+       struct scatterlist *sg;
        int retval = 1;
 
-       if (tw_dev->srb[request_id]) {
+       if (tw_dev->srb[request_id])
                srb = tw_dev->srb[request_id];
-               if (scsi_sglist(srb))
-                       sglist = scsi_sglist(srb);
-       }
 
        /* Initialize command packet */
        full_command_packet = tw_dev->command_packet_virt[request_id];