Re: [PATCH] scsi: Remove unnecessary calls to memset after dma_alloc_coherent

[Markus Elfring]

> dma_alloc_coherent() now zeroes memory after allocation, so additional
> calls to memset() afterwards are unnecessary. Remove them.

I suggest to reconsider the distribution of recipients also for this patch
according to the fields âCcâ and âToâ.


â
> +++ b/drivers/scsi/dpt_i2o.c
â
> @@ -3067,13 +3064,12 @@ static int adpt_i2o_build_sys_table(void)
>  	sys_tbl_len = sizeof(struct i2o_sys_tbl) +	// Header + IOPs
>  				(hba_count) * sizeof(struct i2o_sys_tbl_entry);
>
> -	sys_tbl = dma_alloc_coherent(&pHba->pDev->dev,
> -				sys_tbl_len, &sys_tbl_pa, GFP_KERNEL);
> +	sys_tbl = dma_alloc_coherent(&pHba->pDev->dev, sys_tbl_len,
> +				     &sys_tbl_pa, GFP_KERNEL);
>  	if (!sys_tbl) {
â
> +++ b/drivers/scsi/mvsas/mv_init.c
> @@ -244,28 +244,22 @@ static int mvs_alloc(struct mvs_info *mvi, struct Scsi_Host *shost)
â
> -	mvi->slot = dma_alloc_coherent(mvi->dev,
> -				       sizeof(*mvi->slot) * slot_nr,
> +	mvi->slot = dma_alloc_coherent(mvi->dev, sizeof(*mvi->slot) * slot_nr,
>  				       &mvi->slot_dma, GFP_KERNEL);
>  	if (!mvi->slot)
â
> +++ b/drivers/scsi/qla2xxx/qla_isr.c
> @@ -79,7 +79,7 @@ qla24xx_process_abts(struct scsi_qla_host *vha, void *pkt)
>  	    (uint8_t *)abts, sizeof(*abts));
>
>  	rsp_els = dma_alloc_coherent(&ha->pdev->dev, sizeof(*rsp_els), &dma,
> -	    GFP_KERNEL);
> +				     GFP_KERNEL);
>  	if (!rsp_els) {
â
> +++ b/drivers/scsi/qla2xxx/qla_mbx.c
> @@ -4887,15 +4887,13 @@ qla25xx_set_els_cmds_supported(scsi_qla_host_t *vha)
>  	    "Entered %s.\n", __func__);
>
>  	els_cmd_map = dma_alloc_coherent(&ha->pdev->dev, ELS_CMD_MAP_SIZE,
> -	    &els_cmd_map_dma, GFP_KERNEL);
> +					 &els_cmd_map_dma, GFP_KERNEL);
>  	if (!els_cmd_map) {
â

I find it safer to integrate such source code reformattings by
another update step which will be separated from the proposed deletion
of unwanted function calls.

Regards,
Markus