2018-11-18 14:40:33

by Sabyasachi Gupta

[permalink] [raw]
Subject: [PATCH] scsi/lpfc/lpfc_sli.c: Use dma_zalloc_coherent

Replaced dma_alloc_coherent + memset with dma_zalloc_coherent

Signed-off-by: Sabyasachi Gupta <[email protected]>
---
drivers/scsi/lpfc/lpfc_sli.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 783a154..3491ff7 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -6229,7 +6229,7 @@ lpfc_sli4_ras_dma_alloc(struct lpfc_hba *phba,
goto free_mem;
}

- dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
+ dmabuf->virt = dma_zalloc_coherent(&phba->pcidev->dev,
LPFC_RAS_MAX_ENTRY_SIZE,
&dmabuf->phys,
GFP_KERNEL);
@@ -6240,7 +6240,6 @@ lpfc_sli4_ras_dma_alloc(struct lpfc_hba *phba,
"6187 DMA Alloc Failed FW logging");
goto free_mem;
}
- memset(dmabuf->virt, 0, LPFC_RAS_MAX_ENTRY_SIZE);
dmabuf->buffer_tag = i;
list_add_tail(&dmabuf->list, &ras_fwlog->fwlog_buff_list);
}
--
2.7.4



2018-11-20 09:58:49

by John Garry

[permalink] [raw]
Subject: Re: [PATCH] scsi/lpfc/lpfc_sli.c: Use dma_zalloc_coherent

On 18/11/2018 14:38, Sabyasachi Gupta wrote:
> Replaced dma_alloc_coherent + memset with dma_zalloc_coherent
>
> Signed-off-by: Sabyasachi Gupta <[email protected]>
> ---
> drivers/scsi/lpfc/lpfc_sli.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
> index 783a154..3491ff7 100644
> --- a/drivers/scsi/lpfc/lpfc_sli.c
> +++ b/drivers/scsi/lpfc/lpfc_sli.c
> @@ -6229,7 +6229,7 @@ lpfc_sli4_ras_dma_alloc(struct lpfc_hba *phba,
> goto free_mem;
> }
>
> - dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
> + dmabuf->virt = dma_zalloc_coherent(&phba->pcidev->dev,
> LPFC_RAS_MAX_ENTRY_SIZE,

please ensure that you maintain alignment with opening brackets

> &dmabuf->phys,
> GFP_KERNEL);
> @@ -6240,7 +6240,6 @@ lpfc_sli4_ras_dma_alloc(struct lpfc_hba *phba,
> "6187 DMA Alloc Failed FW logging");
> goto free_mem;
> }
> - memset(dmabuf->virt, 0, LPFC_RAS_MAX_ENTRY_SIZE);
> dmabuf->buffer_tag = i;
> list_add_tail(&dmabuf->list, &ras_fwlog->fwlog_buff_list);
> }
>



2018-11-20 21:53:26

by James Smart

[permalink] [raw]
Subject: Re: [PATCH] scsi/lpfc/lpfc_sli.c: Use dma_zalloc_coherent

On 11/20/2018 1:40 AM, John Garry wrote:
>
> please ensure that you maintain alignment with opening brackets

I don't think this is a requirement.? From the rules I've read
preference is tabs-only indentation.? Spacing (less than a tab), after
tabs, for open brace alignment is allowed, thus is coder's choice.

-- james






2018-11-20 21:54:41

by James Smart

[permalink] [raw]
Subject: Re: [PATCH] scsi/lpfc/lpfc_sli.c: Use dma_zalloc_coherent

On 11/18/2018 6:38 AM, Sabyasachi Gupta wrote:
> Replaced dma_alloc_coherent + memset with dma_zalloc_coherent
>
> Signed-off-by: Sabyasachi Gupta <[email protected]>
> ---
> drivers/scsi/lpfc/lpfc_sli.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
> index 783a154..3491ff7 100644
> --- a/drivers/scsi/lpfc/lpfc_sli.c
> +++ b/drivers/scsi/lpfc/lpfc_sli.c
> @@ -6229,7 +6229,7 @@ lpfc_sli4_ras_dma_alloc(struct lpfc_hba *phba,
> goto free_mem;
> }
>
> - dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
> + dmabuf->virt = dma_zalloc_coherent(&phba->pcidev->dev,
> LPFC_RAS_MAX_ENTRY_SIZE,
> &dmabuf->phys,
> GFP_KERNEL);
> @@ -6240,7 +6240,6 @@ lpfc_sli4_ras_dma_alloc(struct lpfc_hba *phba,
> "6187 DMA Alloc Failed FW logging");
> goto free_mem;
> }
> - memset(dmabuf->virt, 0, LPFC_RAS_MAX_ENTRY_SIZE);
> dmabuf->buffer_tag = i;
> list_add_tail(&dmabuf->list, &ras_fwlog->fwlog_buff_list);
> }

Looks fine.

-- james

Reviewed-by:   James Smart   <[email protected]>


2018-11-21 07:57:44

by John Garry

[permalink] [raw]
Subject: Re: [PATCH] scsi/lpfc/lpfc_sli.c: Use dma_zalloc_coherent

On 20/11/2018 21:52, James Smart wrote:
> On 11/20/2018 1:40 AM, John Garry wrote:
>>
>> please ensure that you maintain alignment with opening brackets
>
> I don't think this is a requirement. From the rules I've read
> preference is tabs-only indentation.

This is the only rule (enforcement) I see:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?h=next-20181120&id=d1fe9c099cecc6e49324355f1b15573e9dbbe0f9

Spacing (less than a tab), after
> tabs, for open brace alignment is allowed, thus is coder's choice.

It seems that alignment was being implemented with tab+space, and now it
would be tab+space but no alignment.

cheers,
John

>
> -- james
>
>
>
>
>
>
>



2018-11-22 16:26:58

by Martin K. Petersen

[permalink] [raw]
Subject: Re: [PATCH] scsi/lpfc/lpfc_sli.c: Use dma_zalloc_coherent


Sabyasachi,

> Replaced dma_alloc_coherent + memset with dma_zalloc_coherent

Applied to 4.21/scsi-queue. Thanks.

--
Martin K. Petersen Oracle Linux Engineering