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Date: Sat, 4 Apr 2020 13:14:52 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Alex Dewar <alex.dewar@....co.uk>,
Allison Randal <allison@...utok.net>,
Arnd Bergmann <arnd@...db.de>,
Chaitra Basappa <chaitra.basappa@...adcom.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Himanshu Madhani <hmadhani@...vell.com>,
"James E. J. Bottomley" <jejb@...ux.ibm.com>,
"Martin K. Petersen" <martin.petersen@...cle.com>,
Richard Fontana <rfontana@...hat.com>,
Sathya Prakash <sathya.prakash@...adcom.com>,
Suganath Prabu Subramani
<suganath-prabu.subramani@...adcom.com>,
Thomas Gleixner <tglx@...utronix.de>,
linux-scsi@...r.kernel.org, aacraid@...rosemi.com,
MPT-FusionLinux.pdl@...adcom.com
Cc: linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scsi: Remove unnecessary calls to memset after
dma_alloc_coherent
> 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 “Cc” and “To”.
…
> +++ b/drivers/scsi/dpt_i2o.c
…
> @@ -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) {
…
> +++ b/drivers/scsi/mvsas/mv_init.c
> @@ -244,28 +244,22 @@ static int mvs_alloc(struct mvs_info *mvi, struct Scsi_Host *shost)
…
> - 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)
…
> +++ 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) {
…
> +++ 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) {
…
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
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