linux-kernel - [PATCH 2/2] scsi: qla4xxx: remove redundant NULL check

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Date:   Fri, 22 Jan 2021 17:16:27 +0800
From:   Yang Li <abaci-bugfix@...ux.alibaba.com>
To:     jejb@...ux.ibm.com
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Yang Li <abaci-bugfix@...ux.alibaba.com>
Subject: [PATCH 2/2] scsi: qla4xxx: remove redundant NULL check

Fix below warnings reported by coccicheck:
./drivers/scsi/qla4xxx/ql4_os.c:4171:2-7: WARNING: NULL check before
some freeing functions is not needed.
./drivers/scsi/qla4xxx/ql4_os.c:4192:2-7: WARNING: NULL check before
some freeing functions is not needed.
./drivers/scsi/qla4xxx/ql4_os.c:4211:2-7: WARNING: NULL check before
some freeing functions is not needed.
./drivers/scsi/qla4xxx/ql4_os.c:6396:2-7: WARNING: NULL check before
some freeing functions is not needed.
./drivers/scsi/qla4xxx/ql4_os.c:6551:2-7: WARNING: NULL check before
some freeing functions is not needed.
./drivers/scsi/qla4xxx/ql4_os.c:7840:2-7: WARNING: NULL check before
some freeing functions is not needed.

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Signed-off-by: Yang Li <abaci-bugfix@...ux.alibaba.com>
---
 drivers/scsi/qla4xxx/ql4_os.c | 27 +++++++++------------------
 1 file changed, 9 insertions(+), 18 deletions(-)

diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index a4b014e..73b89fd 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -4171,8 +4171,7 @@ static void qla4xxx_mem_free(struct scsi_qla_host *ha)
 		dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
 				  ha->queues_dma);
 
-	if (ha->fw_dump)
-		vfree(ha->fw_dump);
+	vfree(ha->fw_dump);
 
 	ha->queues_len = 0;
 	ha->queues = NULL;
@@ -4192,8 +4191,7 @@ static void qla4xxx_mem_free(struct scsi_qla_host *ha)
 
 	dma_pool_destroy(ha->chap_dma_pool);
 
-	if (ha->chap_list)
-		vfree(ha->chap_list);
+	vfree(ha->chap_list);
 	ha->chap_list = NULL;
 
 	dma_pool_destroy(ha->fw_ddb_dma_pool);
@@ -4211,8 +4209,7 @@ static void qla4xxx_mem_free(struct scsi_qla_host *ha)
 		iounmap(ha->reg);
 	}
 
-	if (ha->reset_tmplt.buff)
-		vfree(ha->reset_tmplt.buff);
+	vfree(ha->reset_tmplt.buff);
 
 	pci_release_regions(ha->pdev);
 }
@@ -6396,10 +6393,8 @@ static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
 	}
 
 exit_check:
-	if (fw_tddb)
-		vfree(fw_tddb);
-	if (tmp_tddb)
-		vfree(tmp_tddb);
+	vfree(fw_tddb);
+	vfree(tmp_tddb);
 	return ret;
 }
 
@@ -6551,10 +6546,8 @@ static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
 	}
 
 exit_check:
-	if (fw_tddb)
-		vfree(fw_tddb);
-	if (tmp_tddb)
-		vfree(tmp_tddb);
+	vfree(fw_tddb);
+	vfree(tmp_tddb);
 	return ret;
 }
 
@@ -7834,10 +7827,8 @@ static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
 		ret = -ESRCH;
 
 exit_ddb_logout:
-	if (flash_tddb)
-		vfree(flash_tddb);
-	if (tmp_tddb)
-		vfree(tmp_tddb);
+	vfree(flash_tddb);
+	vfree(tmp_tddb);
 	if (fw_ddb_entry)
 		dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
 
-- 
1.8.3.1