From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: zhong jiang <zhongjiang@huawei.com>
Cc: John Garry <john.garry@huawei.com>,
"James E . J . Bottomley" <jejb@linux.vnet.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
aacraid@microsemi.com, linux-scsi <linux-scsi@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 4/4] drivers/scsi/mvsas/mv_init: Use dma_zalloc_coherent to replace dma_alloc_coherent+memset
Date: Wed, 1 Aug 2018 18:34:26 +0300 [thread overview]
Message-ID: <CAHp75Vdir4W+nFHVwH=Vh++441C3TzbN8fxVXDf7_08Qs-4XwA@mail.gmail.com> (raw)
In-Reply-To: <1533129976-51930-5-git-send-email-zhongjiang@huawei.com>
On Wed, Aug 1, 2018 at 4:26 PM, zhong jiang <zhongjiang@huawei.com> wrote:
> The dma_zalloc_coherent is better than dma_alloc_coherent+memset,
> so replace them.
>
FWIW,
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
> Signed-off-by: zhong jiang <zhongjiang@huawei.com>
> ---
> drivers/scsi/mvsas/mv_init.c | 12 ++++--------
> 1 file changed, 4 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/scsi/mvsas/mv_init.c b/drivers/scsi/mvsas/mv_init.c
> index 8c91637..da62e18 100644
> --- a/drivers/scsi/mvsas/mv_init.c
> +++ b/drivers/scsi/mvsas/mv_init.c
> @@ -253,33 +253,29 @@ static int mvs_alloc(struct mvs_info *mvi, struct Scsi_Host *shost)
> /*
> * alloc and init our DMA areas
> */
> - mvi->tx = dma_alloc_coherent(mvi->dev,
> + mvi->tx = dma_zalloc_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);
> - mvi->rx_fis = dma_alloc_coherent(mvi->dev, MVS_RX_FISL_SZ,
> + mvi->rx_fis = dma_zalloc_coherent(mvi->dev, MVS_RX_FISL_SZ,
> &mvi->rx_fis_dma, GFP_KERNEL);
> if (!mvi->rx_fis)
> goto err_out;
> - memset(mvi->rx_fis, 0, MVS_RX_FISL_SZ);
>
> - mvi->rx = dma_alloc_coherent(mvi->dev,
> + mvi->rx = dma_zalloc_coherent(mvi->dev,
> sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1),
> &mvi->rx_dma, GFP_KERNEL);
> if (!mvi->rx)
> goto err_out;
> - memset(mvi->rx, 0, sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1));
> mvi->rx[0] = cpu_to_le32(0xfff);
> mvi->rx_cons = 0xfff;
>
> - mvi->slot = dma_alloc_coherent(mvi->dev,
> + mvi->slot = dma_zalloc_coherent(mvi->dev,
> sizeof(*mvi->slot) * slot_nr,
> &mvi->slot_dma, GFP_KERNEL);
> if (!mvi->slot)
> goto err_out;
> - memset(mvi->slot, 0, sizeof(*mvi->slot) * slot_nr);
>
> mvi->bulk_buffer = dma_alloc_coherent(mvi->dev,
> TRASH_BUCKET_SIZE,
> --
> 1.7.12.4
>
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2018-08-01 15:34 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-01 13:26 [PATCH 0/4] use dma_zalloc_coherent and vzalloc to replace open code zhong jiang
2018-08-01 13:26 ` [PATCH 1/4] driver/scsi/fnic/fnic_trace: Use vzalloc to zero instead of vmalloc+memset zhong jiang
2018-08-01 15:30 ` Andy Shevchenko
2018-08-01 15:47 ` Joe Perches
2018-08-02 6:16 ` zhong jiang
2018-08-01 13:26 ` [PATCH 2/4] drivers/scsi/dpt_i2o: Use dma_zalloc_coherent to repalce dma_alloc_coherent+memset zhong jiang
2018-08-01 15:32 ` Andy Shevchenko
2018-08-01 13:26 ` [PATCH 3/4] drivers/scsi/snic/snic_trc: Use vzalloc instead of vmalloc+memset zhong jiang
2018-08-01 15:33 ` Andy Shevchenko
2018-08-01 13:26 ` [PATCH 4/4] drivers/scsi/mvsas/mv_init: Use dma_zalloc_coherent to replace dma_alloc_coherent+memset zhong jiang
2018-08-01 15:34 ` Andy Shevchenko [this message]
2018-08-01 23:55 ` John Garry
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAHp75Vdir4W+nFHVwH=Vh++441C3TzbN8fxVXDf7_08Qs-4XwA@mail.gmail.com' \
--to=andy.shevchenko@gmail.com \
--cc=aacraid@microsemi.com \
--cc=jejb@linux.vnet.ibm.com \
--cc=john.garry@huawei.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=martin.petersen@oracle.com \
--cc=zhongjiang@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).