From: Bart Van Assche <bvanassche@acm.org>
Date: Sat, 20 Mar 2021 16:23:57 -0700
Subject: scsi: qla2xxx: Simplify qla8044_minidump_process_control()
Patch-mainline: v5.13-rc1
Git-commit: a20821e3f4719458a888af634c10c286365ecd6f
References: bsc#1185491

This patch fixes the following Coverity complaint:

    CID 177490 (#1 of 1): Unused value (UNUSED_VALUE)
    assigned_value: Assigning value from opcode & 0xffffff7fU to opcode
    here, but that stored value is overwritten before it can be used.

Link: https://lore.kernel.org/r/20210320232359.941-6-bvanassche@acm.org
Cc: Quinn Tran <qutran@marvell.com>
Cc: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---
 drivers/scsi/qla2xxx/qla_nx2.c |    8 --------
 1 file changed, 8 deletions(-)

--- a/drivers/scsi/qla2xxx/qla_nx2.c
+++ b/drivers/scsi/qla2xxx/qla_nx2.c
@@ -2227,19 +2227,16 @@ qla8044_minidump_process_control(struct
 		if (opcode & QLA82XX_DBG_OPCODE_WR) {
 			qla8044_wr_reg_indirect(vha, crb_addr,
 			    crb_entry->value_1);
-			opcode &= ~QLA82XX_DBG_OPCODE_WR;
 		}
 
 		if (opcode & QLA82XX_DBG_OPCODE_RW) {
 			qla8044_rd_reg_indirect(vha, crb_addr, &read_value);
 			qla8044_wr_reg_indirect(vha, crb_addr, read_value);
-			opcode &= ~QLA82XX_DBG_OPCODE_RW;
 		}
 
 		if (opcode & QLA82XX_DBG_OPCODE_AND) {
 			qla8044_rd_reg_indirect(vha, crb_addr, &read_value);
 			read_value &= crb_entry->value_2;
-			opcode &= ~QLA82XX_DBG_OPCODE_AND;
 			if (opcode & QLA82XX_DBG_OPCODE_OR) {
 				read_value |= crb_entry->value_3;
 				opcode &= ~QLA82XX_DBG_OPCODE_OR;
@@ -2250,7 +2247,6 @@ qla8044_minidump_process_control(struct
 			qla8044_rd_reg_indirect(vha, crb_addr, &read_value);
 			read_value |= crb_entry->value_3;
 			qla8044_wr_reg_indirect(vha, crb_addr, read_value);
-			opcode &= ~QLA82XX_DBG_OPCODE_OR;
 		}
 		if (opcode & QLA82XX_DBG_OPCODE_POLL) {
 			poll_time = crb_entry->crb_strd.poll_timeout;
@@ -2270,7 +2266,6 @@ qla8044_minidump_process_control(struct
 					    crb_addr, &read_value);
 				}
 			} while (1);
-			opcode &= ~QLA82XX_DBG_OPCODE_POLL;
 		}
 
 		if (opcode & QLA82XX_DBG_OPCODE_RDSTATE) {
@@ -2284,7 +2279,6 @@ qla8044_minidump_process_control(struct
 			qla8044_rd_reg_indirect(vha, addr, &read_value);
 			index = crb_entry->crb_ctrl.state_index_v;
 			tmplt_hdr->saved_state_array[index] = read_value;
-			opcode &= ~QLA82XX_DBG_OPCODE_RDSTATE;
 		}
 
 		if (opcode & QLA82XX_DBG_OPCODE_WRSTATE) {
@@ -2304,7 +2298,6 @@ qla8044_minidump_process_control(struct
 			}
 
 			qla8044_wr_reg_indirect(vha, addr, read_value);
-			opcode &= ~QLA82XX_DBG_OPCODE_WRSTATE;
 		}
 
 		if (opcode & QLA82XX_DBG_OPCODE_MDSTATE) {
@@ -2317,7 +2310,6 @@ qla8044_minidump_process_control(struct
 			read_value |= crb_entry->value_3;
 			read_value += crb_entry->value_1;
 			tmplt_hdr->saved_state_array[index] = read_value;
-			opcode &= ~QLA82XX_DBG_OPCODE_MDSTATE;
 		}
 		crb_addr += crb_entry->crb_strd.addr_stride;
 	}