scsi: qla4xxx: Use zeroing allocator rather than allocator/memset

Use dma_zalloc_coherent instead of dma_alloc_coherent followed by memset
0.

Generated-by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci
Suggested-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Acked-by: Manish Rangankar <Manish.Rangankar@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/qla4xxx/ql4_init.c b/drivers/scsi/qla4xxx/ql4_init.c
index 5d6d158..52b1a0b 100644 (file)
--- a/drivers/scsi/qla4xxx/ql4_init.c
+++ b/drivers/scsi/qla4xxx/ql4_init.c
@@ -153,15 +153,14 @@ int qla4xxx_get_sys_info(struct scsi_qla_host *ha)
        dma_addr_t sys_info_dma;
        int status = QLA_ERROR;
 
-       sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
-                                     &sys_info_dma, GFP_KERNEL);
+       sys_info = dma_zalloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
+                                      &sys_info_dma, GFP_KERNEL);
        if (sys_info == NULL) {
                DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
                              ha->host_no, __func__));
 
                goto exit_get_sys_info_no_free;
        }
-       memset(sys_info, 0, sizeof(*sys_info));
 
        /* Get flash sys info */
        if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,

diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c
index 1da04f3..bda2e64 100644 (file)
--- a/drivers/scsi/qla4xxx/ql4_mbx.c
+++ b/drivers/scsi/qla4xxx/ql4_mbx.c
@@ -625,15 +625,14 @@ int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
        uint32_t mbox_sts[MBOX_REG_COUNT];
        int status = QLA_ERROR;
 
-       init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
-                                       sizeof(struct addr_ctrl_blk),
-                                       &init_fw_cb_dma, GFP_KERNEL);
+       init_fw_cb = dma_zalloc_coherent(&ha->pdev->dev,
+                                        sizeof(struct addr_ctrl_blk),
+                                        &init_fw_cb_dma, GFP_KERNEL);
        if (init_fw_cb == NULL) {
                DEBUG2(printk("scsi%ld: %s: Unable to alloc init_cb\n",
                              ha->host_no, __func__));
                goto exit_init_fw_cb_no_free;
        }
-       memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
 
        /* Get Initialize Firmware Control Block. */
        memset(&mbox_cmd, 0, sizeof(mbox_cmd));
@@ -710,9 +709,9 @@ int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
        uint32_t mbox_cmd[MBOX_REG_COUNT];
        uint32_t mbox_sts[MBOX_REG_COUNT];
 
-       init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
-                                       sizeof(struct addr_ctrl_blk),
-                                       &init_fw_cb_dma, GFP_KERNEL);
+       init_fw_cb = dma_zalloc_coherent(&ha->pdev->dev,
+                                        sizeof(struct addr_ctrl_blk),
+                                        &init_fw_cb_dma, GFP_KERNEL);
        if (init_fw_cb == NULL) {
                printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
                       __func__);
@@ -720,7 +719,6 @@ int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
        }
 
        /* Get Initialize Firmware Control Block. */
-       memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
        if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
            QLA_SUCCESS) {
                DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
@@ -1342,16 +1340,15 @@ int qla4xxx_about_firmware(struct scsi_qla_host *ha)
        uint32_t mbox_sts[MBOX_REG_COUNT];
        int status = QLA_ERROR;
 
-       about_fw = dma_alloc_coherent(&ha->pdev->dev,
-                                     sizeof(struct about_fw_info),
-                                     &about_fw_dma, GFP_KERNEL);
+       about_fw = dma_zalloc_coherent(&ha->pdev->dev,
+                                      sizeof(struct about_fw_info),
+                                      &about_fw_dma, GFP_KERNEL);
        if (!about_fw) {
                DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Unable to alloc memory "
                                  "for about_fw\n", __func__));
                return status;
        }
 
-       memset(about_fw, 0, sizeof(struct about_fw_info));
        memset(&mbox_cmd, 0, sizeof(mbox_cmd));
        memset(&mbox_sts, 0, sizeof(mbox_sts));
 

diff --git a/drivers/scsi/qla4xxx/ql4_nx.c b/drivers/scsi/qla4xxx/ql4_nx.c
index e91abb3..968bd85 100644 (file)
--- a/drivers/scsi/qla4xxx/ql4_nx.c
+++ b/drivers/scsi/qla4xxx/ql4_nx.c
@@ -4050,15 +4050,14 @@ int qla4_8xxx_get_sys_info(struct scsi_qla_host *ha)
        dma_addr_t sys_info_dma;
        int status = QLA_ERROR;
 
-       sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
-                                     &sys_info_dma, GFP_KERNEL);
+       sys_info = dma_zalloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
+                                      &sys_info_dma, GFP_KERNEL);
        if (sys_info == NULL) {
                DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
                    ha->host_no, __func__));
                return status;
        }
 
-       memset(sys_info, 0, sizeof(*sys_info));
        memset(&mbox_cmd, 0, sizeof(mbox_cmd));
        memset(&mbox_sts, 0, sizeof(mbox_sts));
 

diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 2b8a8ce..82e889b 100644 (file)
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -2689,16 +2689,15 @@ qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
        uint32_t rem = len;
        struct nlattr *attr;
 
-       init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
-                                       sizeof(struct addr_ctrl_blk),
-                                       &init_fw_cb_dma, GFP_KERNEL);
+       init_fw_cb = dma_zalloc_coherent(&ha->pdev->dev,
+                                        sizeof(struct addr_ctrl_blk),
+                                        &init_fw_cb_dma, GFP_KERNEL);
        if (!init_fw_cb) {
                ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
                           __func__);
                return -ENOMEM;
        }
 
-       memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
        memset(&mbox_cmd, 0, sizeof(mbox_cmd));
        memset(&mbox_sts, 0, sizeof(mbox_sts));
 
@@ -4196,15 +4195,14 @@ static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
                          sizeof(struct shadow_regs) +
                          MEM_ALIGN_VALUE +
                          (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
-       ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
-                                       &ha->queues_dma, GFP_KERNEL);
+       ha->queues = dma_zalloc_coherent(&ha->pdev->dev, ha->queues_len,
+                                        &ha->queues_dma, GFP_KERNEL);
        if (ha->queues == NULL) {
                ql4_printk(KERN_WARNING, ha,
                    "Memory Allocation failed - queues.\n");
 
                goto mem_alloc_error_exit;
        }
-       memset(ha->queues, 0, ha->queues_len);
 
        /*
         * As per RISC alignment requirements -- the bus-address must be a