From: Fuqian Huang <huangfq.daxian@gmail.com>
To: unlisted-recipients:; (no To-header on input)
Cc: Fuqian Huang <huangfq.daxian@gmail.com>,
"James E.J. Bottomley" <jejb@linux.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Allison Randal <allison@lohutok.net>,
Johannes Thumshirn <jthumshirn@suse.de>,
Thomas Gleixner <tglx@linutronix.de>,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 58/87] scsi: mvsas: remove memset after dma_alloc_coherent
Date: Fri, 28 Jun 2019 01:43:53 +0800 [thread overview]
Message-ID: <20190627174355.5252-1-huangfq.daxian@gmail.com> (raw)
In commit af7ddd8a627c
("Merge tag 'dma-mapping-4.21' of git://git.infradead.org/users/hch/dma-mapping"),
dma_alloc_coherent has already zeroed the memory.
So memset is not needed.
Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com>
---
drivers/scsi/mvsas/mv_init.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/drivers/scsi/mvsas/mv_init.c b/drivers/scsi/mvsas/mv_init.c
index da719b0694dc..f2fae160691d 100644
--- a/drivers/scsi/mvsas/mv_init.c
+++ b/drivers/scsi/mvsas/mv_init.c
@@ -241,19 +241,16 @@ static int mvs_alloc(struct mvs_info *mvi, struct Scsi_Host *shost)
&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, 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,
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;
@@ -262,7 +259,6 @@ static int mvs_alloc(struct mvs_info *mvi, struct Scsi_Host *shost)
&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,
--
2.11.0
next reply other threads:[~2019-06-27 17:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-27 17:43 Fuqian Huang [this message]
2019-06-28 8:17 ` John Garry
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