scsi: dpt_i2o: Remove superfluous memset()

Fixes coccicheck warning:

./drivers/scsi/dpt_i2o.c:3070:11-29: WARNING:
 dma_alloc_coherent use in sys_tbl already zeroes out memory, so memset is not needed
./drivers/scsi/dpt_i2o.c:2780:10-28: WARNING:
 dma_alloc_coherent use in status already zeroes out memory, so memset is not needed
./drivers/scsi/dpt_i2o.c:2834:20-38: WARNING:
 dma_alloc_coherent use in pHba -> reply_pool already zeroes out memory, so memset is not needed
./drivers/scsi/dpt_i2o.c:1328:10-28: WARNING:
 dma_alloc_coherent use in status already zeroes out memory, so memset is not needed

Link: https://lore.kernel.org/r/20200718123224.1202-1-wanghai38@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
index 0497ef6..f654ad8 100644 (file)
--- a/drivers/scsi/dpt_i2o.c
+++ b/drivers/scsi/dpt_i2o.c
@@ -1331,7 +1331,6 @@ static s32 adpt_i2o_reset_hba(adpt_hba* pHba)
                printk(KERN_ERR"IOP reset failed - no free memory.\n");
                return -ENOMEM;
        }
-       memset(status,0,4);
 
        msg[0]=EIGHT_WORD_MSG_SIZE|SGL_OFFSET_0;
        msg[1]=I2O_CMD_ADAPTER_RESET<<24|HOST_TID<<12|ADAPTER_TID;
@@ -2784,7 +2783,6 @@ static s32 adpt_i2o_init_outbound_q(adpt_hba* pHba)
                        pHba->name);
                return -ENOMEM;
        }
-       memset(status, 0, 4);
 
        writel(EIGHT_WORD_MSG_SIZE| SGL_OFFSET_6, &msg[0]);
        writel(I2O_CMD_OUTBOUND_INIT<<24 | HOST_TID<<12 | ADAPTER_TID, &msg[1]);
@@ -2838,7 +2836,6 @@ static s32 adpt_i2o_init_outbound_q(adpt_hba* pHba)
                printk(KERN_ERR "%s: Could not allocate reply pool\n", pHba->name);
                return -ENOMEM;
        }
-       memset(pHba->reply_pool, 0 , pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4);
 
        for(i = 0; i < pHba->reply_fifo_size; i++) {
                writel(pHba->reply_pool_pa + (i * REPLY_FRAME_SIZE * 4),
@@ -3073,7 +3070,6 @@ static int adpt_i2o_build_sys_table(void)
                printk(KERN_WARNING "SysTab Set failed. Out of memory.\n");     
                return -ENOMEM;
        }
-       memset(sys_tbl, 0, sys_tbl_len);
 
        sys_tbl->num_entries = hba_count;
        sys_tbl->version = I2OVERSION;