* [PATCH] scsi/mvsas/mv_sas.c: Use dma_pool_zalloc
@ 2018-10-18 16:06 Sabyasachi Gupta
2018-10-18 16:18 ` Jinpu Wang
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Sabyasachi Gupta @ 2018-10-18 16:06 UTC (permalink / raw)
To: jejb, martin.petersen, keescook, john.garry, jinpu.wang
Cc: jrdr.linux, linux-scsi, linux-kernel, brajeswar.linux
Replaced dma_pool_alloc + memset with dma_pool_zalloc
Signed-off-by: Sabyasachi Gupta <sabyasachi.linux@gmail.com>
---
drivers/scsi/mvsas/mv_sas.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
index cff43bd..d00d37d 100644
--- a/drivers/scsi/mvsas/mv_sas.c
+++ b/drivers/scsi/mvsas/mv_sas.c
@@ -790,12 +790,11 @@ static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf
slot->n_elem = n_elem;
slot->slot_tag = tag;
- slot->buf = dma_pool_alloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma);
+ slot->buf = dma_pool_zalloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma);
if (!slot->buf) {
rc = -ENOMEM;
goto err_out_tag;
}
- memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
tei.task = task;
tei.hdr = &mvi->slot[tag];
--
2.7.4
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH] scsi/mvsas/mv_sas.c: Use dma_pool_zalloc
2018-10-18 16:06 [PATCH] scsi/mvsas/mv_sas.c: Use dma_pool_zalloc Sabyasachi Gupta
@ 2018-10-18 16:18 ` Jinpu Wang
2018-10-18 16:32 ` John Garry
2018-10-24 1:26 ` Martin K. Petersen
2 siblings, 0 replies; 4+ messages in thread
From: Jinpu Wang @ 2018-10-18 16:18 UTC (permalink / raw)
To: sabyasachi.linux
Cc: James E.J. Bottomley, Martin K. Petersen, Kees Cook, John Garry,
jrdr.linux, Linux SCSI Mailinglist, linux-kernel, brajeswar.linux
On Thu, Oct 18, 2018 at 6:06 PM Sabyasachi Gupta
<sabyasachi.linux@gmail.com> wrote:
>
> Replaced dma_pool_alloc + memset with dma_pool_zalloc
> Signed-off-by: Sabyasachi Gupta <sabyasachi.linux@gmail.com>
Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com>
Thanks!
> ---
> drivers/scsi/mvsas/mv_sas.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
--
Jack Wang
Linux Kernel Developer
ProfitBricks GmbH
Greifswalder Str. 207
D - 10405 Berlin
Tel: +49 30 577 008 042
Fax: +49 30 577 008 299
Email: jinpu.wang@profitbricks.com
URL: https://www.profitbricks.de
Sitz der Gesellschaft: Berlin
Registergericht: Amtsgericht Charlottenburg, HRB 125506 B
Geschäftsführer: Achim Weiss, Matthias Steinberg, Christoph Steffens
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] scsi/mvsas/mv_sas.c: Use dma_pool_zalloc
2018-10-18 16:06 [PATCH] scsi/mvsas/mv_sas.c: Use dma_pool_zalloc Sabyasachi Gupta
2018-10-18 16:18 ` Jinpu Wang
@ 2018-10-18 16:32 ` John Garry
2018-10-24 1:26 ` Martin K. Petersen
2 siblings, 0 replies; 4+ messages in thread
From: John Garry @ 2018-10-18 16:32 UTC (permalink / raw)
To: Sabyasachi Gupta, jejb, martin.petersen, keescook, jinpu.wang
Cc: jrdr.linux, linux-scsi, linux-kernel, brajeswar.linux
On 18/10/2018 17:06, Sabyasachi Gupta wrote:
> Replaced dma_pool_alloc + memset with dma_pool_zalloc
> Signed-off-by: Sabyasachi Gupta <sabyasachi.linux@gmail.com>
> ---
> drivers/scsi/mvsas/mv_sas.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
> index cff43bd..d00d37d 100644
> --- a/drivers/scsi/mvsas/mv_sas.c
> +++ b/drivers/scsi/mvsas/mv_sas.c
> @@ -790,12 +790,11 @@ static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf
> slot->n_elem = n_elem;
> slot->slot_tag = tag;
>
> - slot->buf = dma_pool_alloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma);
> + slot->buf = dma_pool_zalloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma);
> if (!slot->buf) {
> rc = -ENOMEM;
> goto err_out_tag;
> }
> - memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
>
How about also fixing these, below, up to use dma_zalloc_coherent() or
even dmam_alloc_coherent() [as they're manually free'd at removal]:
static int mvs_alloc(struct mvs_info *mvi, struct Scsi_Host *shost)
{
int i = 0, slot_nr;
char pool_name[32];
...
/*
* alloc and init our DMA areas
*/
mvi->tx = dma_alloc_coherent(mvi->dev,
sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ,
&mvi->tx_dma, GFP_KERNEL);
if (!mvi->tx)
goto err_out;
memset(mvi->tx, 0, sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ);
...
Thanks,
John
> tei.task = task;
> tei.hdr = &mvi->slot[tag];
>
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] scsi/mvsas/mv_sas.c: Use dma_pool_zalloc
2018-10-18 16:06 [PATCH] scsi/mvsas/mv_sas.c: Use dma_pool_zalloc Sabyasachi Gupta
2018-10-18 16:18 ` Jinpu Wang
2018-10-18 16:32 ` John Garry
@ 2018-10-24 1:26 ` Martin K. Petersen
2 siblings, 0 replies; 4+ messages in thread
From: Martin K. Petersen @ 2018-10-24 1:26 UTC (permalink / raw)
To: Sabyasachi Gupta
Cc: jejb, martin.petersen, keescook, john.garry, jinpu.wang,
jrdr.linux, linux-scsi, linux-kernel, brajeswar.linux
Sabyasachi,
> Replaced dma_pool_alloc + memset with dma_pool_zalloc
Applied to 4.20/scsi-queue, thank you.
--
Martin K. Petersen Oracle Linux Engineering
^ permalink raw reply [flat|nested] 4+ messages in thread
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2018-10-18 16:06 [PATCH] scsi/mvsas/mv_sas.c: Use dma_pool_zalloc Sabyasachi Gupta
2018-10-18 16:18 ` Jinpu Wang
2018-10-18 16:32 ` John Garry
2018-10-24 1:26 ` Martin K. Petersen
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