[PATCH] scsi: mvsas: remove not needed memset

[PATCH] scsi: mvsas: remove not needed memset

[zhengbin]

Fixes coccicheck warning:

drivers/scsi/mvsas/mv_init.c:239:11-29: WARNING: dma_alloc_coherent use in mvi -> tx already zeroes out memory,  so memset is not needed
drivers/scsi/mvsas/mv_init.c:245:15-33: WARNING: dma_alloc_coherent use in mvi -> rx_fis already zeroes out memory,  so memset is not needed
drivers/scsi/mvsas/mv_init.c:251:11-29: WARNING: dma_alloc_coherent use in mvi -> rx already zeroes out memory,  so memset is not needed
drivers/scsi/mvsas/mv_init.c:260:13-31: WARNING: dma_alloc_coherent use in mvi -> slot already zeroes out memory,  so memset is not needed

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.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 da719b0..f2fae16 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,
--
2.7.4