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SubjectRE: [PATCH 4/8] qed: remove unnecessary memsets
Date
> From: Robert Eshleman <bobbyeshleman@gmail.com>
> Sent: Wednesday, February 27, 2019 8:10 AM
>
> This patch replaces unnecessary memset(,0) calls with simply assigning
> structs to zero.
>
> Signed-off-by: Robert Eshleman <bobbyeshleman@gmail.com>
> ---
> drivers/net/ethernet/qlogic/qed/qed_cxt.c | 4 +-
> drivers/net/ethernet/qlogic/qed/qed_hw.c | 3 +-
> drivers/net/ethernet/qlogic/qed/qed_mcp.c | 70 ++++++++---------------
> 3 files changed, 25 insertions(+), 52 deletions(-)
>
> diff --git a/drivers/net/ethernet/qlogic/qed/qed_cxt.c
> b/drivers/net/ethernet/qlogic/qed/qed_cxt.c
> index c2ad405b2f50..0452ef2fdf1d 100644
> --- a/drivers/net/ethernet/qlogic/qed/qed_cxt.c
> +++ b/drivers/net/ethernet/qlogic/qed/qed_cxt.c
> @@ -902,12 +902,10 @@ static int qed_cxt_src_t2_alloc(struct qed_hwfn
> *p_hwfn)
> struct qed_cxt_mngr *p_mngr = p_hwfn->p_cxt_mngr;
> u32 conn_num, total_size, ent_per_page, psz, i;
> struct qed_ilt_client_cfg *p_src;
> - struct qed_src_iids src_iids;
> + struct qed_src_iids src_iids = {0};
> struct qed_dma_mem *p_t2;
> int rc;
>
> - memset(&src_iids, 0, sizeof(src_iids));
> -
> /* if the SRC ILT client is inactive - there are no connection
> * requiring the searcer, leave.
> */
> diff --git a/drivers/net/ethernet/qlogic/qed/qed_hw.c
> b/drivers/net/ethernet/qlogic/qed/qed_hw.c
> index 70504dcf4087..b8ca3a31409b 100644
> --- a/drivers/net/ethernet/qlogic/qed/qed_hw.c
> +++ b/drivers/net/ethernet/qlogic/qed/qed_hw.c
> @@ -831,7 +831,7 @@ int qed_dmae_sanity(struct qed_hwfn *p_hwfn,
> struct qed_ptt *p_ptt, const char *phase) {
> u32 size = PAGE_SIZE / 2, val;
> - struct qed_dmae_params params;
> + struct qed_dmae_params params = {0};
> int rc = 0;
> dma_addr_t p_phys;
> void *p_virt;
> @@ -864,7 +864,6 @@ int qed_dmae_sanity(struct qed_hwfn *p_hwfn,
> (u64)p_phys,
> p_virt, (u64)(p_phys + size), (u8 *)p_virt + size, size);
>
> - memset(&params, 0, sizeof(params));
> rc = qed_dmae_host2host(p_hwfn, p_ptt, p_phys, p_phys + size,
> size / 4 /* size_in_dwords */, &params);
> if (rc) {
> diff --git a/drivers/net/ethernet/qlogic/qed/qed_mcp.c
> b/drivers/net/ethernet/qlogic/qed/qed_mcp.c
> index e7f18e34ff0d..e1b72fc819a9 100644
> --- a/drivers/net/ethernet/qlogic/qed/qed_mcp.c
> +++ b/drivers/net/ethernet/qlogic/qed/qed_mcp.c
> @@ -642,10 +642,9 @@ int qed_mcp_cmd(struct qed_hwfn *p_hwfn,
> u32 *o_mcp_resp,
> u32 *o_mcp_param)
> {
> - struct qed_mcp_mb_params mb_params;
> + struct qed_mcp_mb_params mb_params = {0};
> int rc;
>
> - memset(&mb_params, 0, sizeof(mb_params));
> mb_params.cmd = cmd;
> mb_params.param = param;
>
> @@ -667,10 +666,9 @@ qed_mcp_nvm_wr_cmd(struct qed_hwfn *p_hwfn,
> u32 *o_mcp_resp,
> u32 *o_mcp_param, u32 i_txn_size, u32 *i_buf) {
> - struct qed_mcp_mb_params mb_params;
> + struct qed_mcp_mb_params mb_params = {0};
> int rc;
>
> - memset(&mb_params, 0, sizeof(mb_params));
> mb_params.cmd = cmd;
> mb_params.param = param;
> mb_params.p_data_src = i_buf;
> @@ -695,11 +693,10 @@ int qed_mcp_nvm_rd_cmd(struct qed_hwfn
> *p_hwfn,
> u32 *o_mcp_resp,
> u32 *o_mcp_param, u32 *o_txn_size, u32 *o_buf) {
> - struct qed_mcp_mb_params mb_params;
> + struct qed_mcp_mb_params mb_params = {0};
> u8 raw_data[MCP_DRV_NVM_BUF_LEN];
> int rc;
>
> - memset(&mb_params, 0, sizeof(mb_params));
> mb_params.cmd = cmd;
> mb_params.param = param;
> mb_params.p_data_dst = raw_data;
> @@ -821,13 +818,12 @@ __qed_mcp_load_req(struct qed_hwfn *p_hwfn,
> struct qed_load_req_in_params *p_in_params,
> struct qed_load_req_out_params *p_out_params) {
> - struct qed_mcp_mb_params mb_params;
> - struct load_req_stc load_req;
> + struct qed_mcp_mb_params mb_params = {0};
> + struct load_req_stc load_req = {0};
> struct load_rsp_stc load_rsp;
> u32 hsi_ver;
> int rc;
>
> - memset(&load_req, 0, sizeof(load_req));
> load_req.drv_ver_0 = p_in_params->drv_ver_0;
> load_req.drv_ver_1 = p_in_params->drv_ver_1;
> load_req.fw_ver = p_in_params->fw_ver; @@ -843,7 +839,6 @@
> __qed_mcp_load_req(struct qed_hwfn *p_hwfn,
> DRV_ID_MCP_HSI_VER_CURRENT :
> (p_in_params->hsi_ver << DRV_ID_MCP_HSI_VER_SHIFT);
>
> - memset(&mb_params, 0, sizeof(mb_params));
> mb_params.cmd = DRV_MSG_CODE_LOAD_REQ;
> mb_params.param = PDA_COMP | hsi_ver | p_hwfn->cdev-
> >drv_type;
> mb_params.p_data_src = &load_req;
> @@ -959,12 +954,11 @@ int qed_mcp_load_req(struct qed_hwfn *p_hwfn,
> struct qed_ptt *p_ptt,
> struct qed_load_req_params *p_params) {
> - struct qed_load_req_out_params out_params;
> - struct qed_load_req_in_params in_params;
> + struct qed_load_req_out_params out_params = {0};
> + struct qed_load_req_in_params in_params = {0};
> u8 mfw_drv_role, mfw_force_cmd;
> int rc;
>
> - memset(&in_params, 0, sizeof(in_params));
> in_params.hsi_ver = QED_LOAD_REQ_HSI_VER_DEFAULT;
> in_params.drv_ver_0 = QED_VERSION;
> in_params.drv_ver_1 = qed_get_config_bitmap(); @@ -981,7 +975,6
> @@ int qed_mcp_load_req(struct qed_hwfn *p_hwfn,
> in_params.force_cmd = mfw_force_cmd;
> in_params.avoid_eng_reset = p_params->avoid_eng_reset;
>
> - memset(&out_params, 0, sizeof(out_params));
> rc = __qed_mcp_load_req(p_hwfn, p_ptt, &in_params,
> &out_params);
> if (rc)
> return rc;
> @@ -1072,7 +1065,7 @@ int qed_mcp_load_req(struct qed_hwfn *p_hwfn,
>
> int qed_mcp_unload_req(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
> {
> - struct qed_mcp_mb_params mb_params;
> + struct qed_mcp_mb_params mb_params = {0};
> u32 wol_param;
>
> switch (p_hwfn->cdev->wol_config) {
> @@ -1091,7 +1084,6 @@ int qed_mcp_unload_req(struct qed_hwfn
> *p_hwfn, struct qed_ptt *p_ptt)
> wol_param = DRV_MB_PARAM_UNLOAD_WOL_MCP;
> }
>
> - memset(&mb_params, 0, sizeof(mb_params));
> mb_params.cmd = DRV_MSG_CODE_UNLOAD_REQ;
> mb_params.param = wol_param;
> mb_params.flags = QED_MB_FLAG_CAN_SLEEP |
> QED_MB_FLAG_AVOID_BLOCK; @@ -1101,17 +1093,15 @@ int
> qed_mcp_unload_req(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
>
> int qed_mcp_unload_done(struct qed_hwfn *p_hwfn, struct qed_ptt
> *p_ptt) {
> - struct qed_mcp_mb_params mb_params;
> - struct mcp_mac wol_mac;
> + struct qed_mcp_mb_params mb_params = {0};
> + struct mcp_mac wol_mac = {0};
>
> - memset(&mb_params, 0, sizeof(mb_params));
> mb_params.cmd = DRV_MSG_CODE_UNLOAD_DONE;
>
> /* Set the primary MAC if WoL is enabled */
> if (p_hwfn->cdev->wol_config == QED_OV_WOL_ENABLED) {
> u8 *p_mac = p_hwfn->cdev->wol_mac;
>
> - memset(&wol_mac, 0, sizeof(wol_mac));
> wol_mac.mac_upper = p_mac[0] << 8 | p_mac[1];
> wol_mac.mac_lower = p_mac[2] << 24 | p_mac[3] << 16 |
> p_mac[4] << 8 | p_mac[5];
> @@ -1167,7 +1157,7 @@ int qed_mcp_ack_vf_flr(struct qed_hwfn
> *p_hwfn,
> u32 mfw_func_offsize = qed_rd(p_hwfn, p_ptt, addr);
> u32 func_addr = SECTION_ADDR(mfw_func_offsize,
> MCP_PF_ID(p_hwfn));
> - struct qed_mcp_mb_params mb_params;
> + struct qed_mcp_mb_params mb_params = {0};
> int rc;
> int i;
>
> @@ -1176,7 +1166,6 @@ int qed_mcp_ack_vf_flr(struct qed_hwfn
> *p_hwfn,
> "Acking VFs [%08x,...,%08x] - %08x\n",
> i * 32, (i + 1) * 32 - 1, vfs_to_ack[i]);
>
> - memset(&mb_params, 0, sizeof(mb_params));
> mb_params.cmd = DRV_MSG_CODE_VF_DISABLED_DONE;
> mb_params.p_data_src = vfs_to_ack;
> mb_params.data_src_size = VF_MAX_STATIC / 8; @@ -1455,13
> +1444,12 @@ static void qed_mcp_handle_link_change(struct qed_hwfn
> *p_hwfn, int qed_mcp_set_link(struct qed_hwfn *p_hwfn, struct qed_ptt
> *p_ptt, bool b_up) {
> struct qed_mcp_link_params *params = &p_hwfn->mcp_info-
> >link_input;
> - struct qed_mcp_mb_params mb_params;
> - struct eth_phy_cfg phy_cfg;
> + struct qed_mcp_mb_params mb_params = {0};
> + struct eth_phy_cfg phy_cfg = {0};
> int rc = 0;
> u32 cmd;
>
> /* Set the shmem configuration according to params */
> - memset(&phy_cfg, 0, sizeof(phy_cfg));
> cmd = b_up ? DRV_MSG_CODE_INIT_PHY :
> DRV_MSG_CODE_LINK_RESET;
> if (!params->speed.autoneg)
> phy_cfg.speed = params->speed.forced_speed; @@ -1505,7
> +1493,6 @@ int qed_mcp_set_link(struct qed_hwfn *p_hwfn, struct
> qed_ptt *p_ptt, bool b_up)
> "Resetting link\n");
> }
>
> - memset(&mb_params, 0, sizeof(mb_params));
> mb_params.cmd = cmd;
> mb_params.p_data_src = &phy_cfg;
> mb_params.data_src_size = sizeof(phy_cfg); @@ -1534,7 +1521,7
> @@ static void qed_mcp_send_protocol_stats(struct qed_hwfn *p_hwfn, {
> enum qed_mcp_protocol_type stats_type;
> union qed_mcp_protocol_stats stats;
> - struct qed_mcp_mb_params mb_params;
> + struct qed_mcp_mb_params mb_params = {0};
> u32 hsi_param;
>
> switch (type) {
> @@ -1561,7 +1548,6 @@ static void qed_mcp_send_protocol_stats(struct
> qed_hwfn *p_hwfn,
>
> qed_get_protocol_stats(p_hwfn->cdev, stats_type, &stats);
>
> - memset(&mb_params, 0, sizeof(mb_params));
> mb_params.cmd = DRV_MSG_CODE_GET_STATS;
> mb_params.param = hsi_param;
> mb_params.p_data_src = &stats;
> @@ -2370,20 +2356,18 @@ qed_mcp_send_drv_version(struct qed_hwfn
> *p_hwfn,
> struct qed_ptt *p_ptt,
> struct qed_mcp_drv_version *p_ver)
> {
> - struct qed_mcp_mb_params mb_params;
> - struct drv_version_stc drv_version;
> + struct qed_mcp_mb_params mb_params = {0};
> + struct drv_version_stc drv_version = {0};
> __be32 val;
> u32 i;
> int rc;
>
> - memset(&drv_version, 0, sizeof(drv_version));
> drv_version.version = p_ver->version;
> for (i = 0; i < (MCP_DRV_VER_STR_SIZE - 4) / sizeof(u32); i++) {
> val = cpu_to_be32(*((u32 *)&p_ver->name[i *
> sizeof(u32)]));
> *(__be32 *)&drv_version.name[i * sizeof(u32)] = val;
> }
>
> - memset(&mb_params, 0, sizeof(mb_params));
> mb_params.cmd = DRV_MSG_CODE_SET_VERSION;
> mb_params.p_data_src = &drv_version;
> mb_params.data_src_size = sizeof(drv_version); @@ -2536,11
> +2520,10 @@ int qed_mcp_ov_update_mtu(struct qed_hwfn *p_hwfn, int
> qed_mcp_ov_update_mac(struct qed_hwfn *p_hwfn,
> struct qed_ptt *p_ptt, u8 *mac)
> {
> - struct qed_mcp_mb_params mb_params;
> + struct qed_mcp_mb_params mb_params = {0};
> u32 mfw_mac[2];
> int rc;
>
> - memset(&mb_params, 0, sizeof(mb_params));
> mb_params.cmd = DRV_MSG_CODE_SET_VMAC;
> mb_params.param = DRV_MSG_CODE_VMAC_TYPE_MAC <<
> DRV_MSG_CODE_VMAC_TYPE_SHIFT;
> @@ -3197,12 +3180,10 @@ qed_mcp_resc_allocation_msg(struct qed_hwfn
> *p_hwfn,
> struct qed_resc_alloc_in_params *p_in_params,
> struct qed_resc_alloc_out_params
> *p_out_params) {
> - struct qed_mcp_mb_params mb_params;
> - struct resource_info mfw_resc_info;
> + struct qed_mcp_mb_params mb_params = {0};
> + struct resource_info mfw_resc_info = {0};
> int rc;
>
> - memset(&mfw_resc_info, 0, sizeof(mfw_resc_info));
> -
> mfw_resc_info.res_id = qed_mcp_get_mfw_res_id(p_in_params-
> >res_id);
> if (mfw_resc_info.res_id == RESOURCE_NUM_INVALID) {
> DP_ERR(p_hwfn,
> @@ -3224,7 +3205,6 @@ qed_mcp_resc_allocation_msg(struct qed_hwfn
> *p_hwfn,
> return -EINVAL;
> }
>
> - memset(&mb_params, 0, sizeof(mb_params));
> mb_params.cmd = p_in_params->cmd;
> mb_params.param = QED_RESC_ALLOC_VERSION;
> mb_params.p_data_src = &mfw_resc_info; @@ -3277,15 +3257,13
> @@ qed_mcp_set_resc_max_val(struct qed_hwfn *p_hwfn,
> enum qed_resources res_id,
> u32 resc_max_val, u32 *p_mcp_resp)
> {
> - struct qed_resc_alloc_out_params out_params;
> - struct qed_resc_alloc_in_params in_params;
> + struct qed_resc_alloc_out_params out_params = {0};
> + struct qed_resc_alloc_in_params in_params = {0};
> int rc;
>
> - memset(&in_params, 0, sizeof(in_params));
> in_params.cmd = DRV_MSG_SET_RESOURCE_VALUE_MSG;
> in_params.res_id = res_id;
> in_params.resc_max_val = resc_max_val;
> - memset(&out_params, 0, sizeof(out_params));
> rc = qed_mcp_resc_allocation_msg(p_hwfn, p_ptt, &in_params,
> &out_params);
> if (rc)
> @@ -3302,14 +3280,12 @@ qed_mcp_get_resc_info(struct qed_hwfn
> *p_hwfn,
> enum qed_resources res_id,
> u32 *p_mcp_resp, u32 *p_resc_num, u32 *p_resc_start)
> {
> - struct qed_resc_alloc_out_params out_params;
> - struct qed_resc_alloc_in_params in_params;
> + struct qed_resc_alloc_out_params out_params = {0};
> + struct qed_resc_alloc_in_params in_params = {0};
> int rc;
>
> - memset(&in_params, 0, sizeof(in_params));
> in_params.cmd = DRV_MSG_GET_RESOURCE_ALLOC_MSG;
> in_params.res_id = res_id;
> - memset(&out_params, 0, sizeof(out_params));
> rc = qed_mcp_resc_allocation_msg(p_hwfn, p_ptt, &in_params,
> &out_params);
> if (rc)
> --
> 2.20.1

Thanks, 

Acked-by: Michal Kalderon <michal.kalderon@marvell.com>


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