Re: [PATCH 5/6] scsi: qla2xxx: Cocci spatch "pool_zalloc-simple"

[Martin K. Petersen]

Thomas,

> Use *_pool_zalloc rather than *_pool_alloc followed by memset with 0.
> Found by coccinelle spatch "api/alloc/pool_zalloc-simple.cocci"

Applied to 4.15/scsi-queue. Thanks!

-- 
Martin K. Petersen  Oracle Linux Engineering

Re: [PATCH 5/6] scsi: qla2xxx: Cocci spatch "pool_zalloc-simple"

[Madhani, Himanshu]

> On Sep 20, 2017, at 11:15 PM, Thomas Meyer  wrote:
> 
> Use *_pool_zalloc rather than *_pool_alloc followed by memset with 0.
> Found by coccinelle spatch "api/alloc/pool_zalloc-simple.cocci"
> 
> Signed-off-by: Thomas Meyer 
> ---
> 
> diff -u -p a/drivers/scsi/qla2xxx/qla_bsg.c b/drivers/scsi/qla2xxx/qla_bsg.c
> --- a/drivers/scsi/qla2xxx/qla_bsg.c
> +++ b/drivers/scsi/qla2xxx/qla_bsg.c
> @@ -1116,14 +1116,13 @@ qla84xx_mgmt_cmd(struct bsg_job *bsg_job
>   return -EINVAL;
>   }
> 
> - mn = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, _dma);
> + mn = dma_pool_zalloc(ha->s_dma_pool, GFP_KERNEL, _dma);
>   if (!mn) {
>   ql_log(ql_log_warn, vha, 0x703c,
>   "DMA alloc failed for fw buffer.\n");
>   return -ENOMEM;
>   }
> 
> - memset(mn, 0, sizeof(struct access_chip_84xx));
>   mn->entry_type = ACCESS_CHIP_IOCB_TYPE;
>   mn->entry_count = 1;
>   ql84_mgmt = (void *)bsg_request + sizeof(struct fc_bsg_request);
> diff -u -p a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
> --- a/drivers/scsi/qla2xxx/qla_init.c
> +++ b/drivers/scsi/qla2xxx/qla_init.c
> @@ -812,13 +812,12 @@ int qla24xx_async_gpdb(struct scsi_qla_h
>   sp->gen2 = fcport->login_gen;
>   qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);
> 
> - pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, _dma);
> + pd = dma_pool_zalloc(ha->s_dma_pool, GFP_KERNEL, _dma);
>   if (pd == NULL) {
>   ql_log(ql_log_warn, vha, 0xd043,
>   "Failed to allocate port database structure.\n");
>   goto done_free_sp;
>   }
> - memset(pd, 0, max(PORT_DATABASE_SIZE, PORT_DATABASE_24XX_SIZE));
> 
>   mb = sp->u.iocb_cmd.u.mbx.out_mb;
>   mb[0] = MBC_GET_PORT_DATABASE;
> diff -u -p a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
> --- a/drivers/scsi/qla2xxx/qla_mbx.c
> +++ b/drivers/scsi/qla2xxx/qla_mbx.c
> @@ -1782,13 +1782,12 @@ qla2x00_get_port_database(scsi_qla_host_
>   "Entered %s.\n", __func__);
> 
>   pd24 = NULL;
> - pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, _dma);
> + pd = dma_pool_zalloc(ha->s_dma_pool, GFP_KERNEL, _dma);
>   if (pd  == NULL) {
>   ql_log(ql_log_warn, vha, 0x1050,
>   "Failed to allocate port database structure.\n");
>   return QLA_MEMORY_ALLOC_FAILED;
>   }
> - memset(pd, 0, max(PORT_DATABASE_SIZE, PORT_DATABASE_24XX_SIZE));
> 
>   mcp->mb[0] = MBC_GET_PORT_DATABASE;
>   if (opt != 0 && !IS_FWI2_CAPABLE(ha))
> @@ -2255,13 +2254,12 @@ qla24xx_login_fabric(scsi_qla_host_t *vh
>   else
>   req = ha->req_q_map[0];
> 
> - lg = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, _dma);
> + lg = dma_pool_zalloc(ha->s_dma_pool, GFP_KERNEL, _dma);
>   if (lg == NULL) {
>   ql_log(ql_log_warn, vha, 0x1062,
>   "Failed to allocate login IOCB.\n");
>   return QLA_MEMORY_ALLOC_FAILED;
>   }
> - memset(lg, 0, sizeof(struct logio_entry_24xx));
> 
>   lg->entry_type = LOGINOUT_PORT_IOCB_TYPE;
>   lg->entry_count = 1;
> @@ -2525,13 +2523,12 @@ qla24xx_fabric_logout(scsi_qla_host_t *v
>   ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x106d,
>   "Entered %s.\n", __func__);
> 
> - lg = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, _dma);
> + lg = dma_pool_zalloc(ha->s_dma_pool, GFP_KERNEL, _dma);
>   if (lg == NULL) {
>   ql_log(ql_log_warn, vha, 0x106e,
>   "Failed to allocate logout IOCB.\n");
>   return QLA_MEMORY_ALLOC_FAILED;
>   }
> - memset(lg, 0, sizeof(struct logio_entry_24xx));
> 
>   req = vha->req;
>   lg->entry_type = LOGINOUT_PORT_IOCB_TYPE;
> @@ -2820,13 +2817,12 @@ qla2x00_get_fcal_position_map(scsi_qla_h
>   ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x107f,
>   "Entered %s.\n", __func__);
> 
> - pmap = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, _dma);
> + pmap = dma_pool_zalloc(ha->s_dma_pool, GFP_KERNEL, _dma);
>   if (pmap  == NULL) {
>   ql_log(ql_log_warn, vha, 0x1080,
>   "Memory alloc failed.\n");
>   return QLA_MEMORY_ALLOC_FAILED;
>   }
> - memset(pmap, 0, FCAL_MAP_SIZE);
> 
>   mcp->mb[0] = MBC_GET_FC_AL_POSITION_MAP;
>   mcp->mb[2] = MSW(pmap_dma);
> @@ -3014,13 +3010,12 @@ qla24xx_abort_command(srb_t *sp)
>   return QLA_FUNCTION_FAILED;
>   }
> 
> - abt = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, _dma);
> + abt = dma_pool_zalloc(ha->s_dma_pool, GFP_KERNEL, _dma);
>   if (abt == NULL) {
>   ql_log(ql_log_warn, vha, 0x108d,
>   "Failed to allocate abort IOCB.\n");
>   return QLA_MEMORY_ALLOC_FAILED;
>   }
> - memset(abt, 0, sizeof(struct abort_entry_24xx));
> 
>   abt->entry_type = ABORT_IOCB_TYPE;
>