From: Li Heng Date: Thu, 30 Jul 2020 03:03:55 +0000 (+0800) Subject: scsi: mvsas: Remove superfluous memset() X-Git-Tag: v5.10.7~1329^2~226 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f672d7d35f88fbd84b43090450145c076f54c95a;p=platform%2Fkernel%2Flinux-rpi.git scsi: mvsas: Remove superfluous memset() Fixes coccicheck warning: ./drivers/scsi/mvsas/mv_init.c:244:11-29: WARNING: dma_alloc_coherent use in mvi -> tx already zeroes out memory, so memset is not needed ./drivers/scsi/mvsas/mv_init.c:250:15-33: WARNING: dma_alloc_coherent use in mvi -> rx_fis already zeroes out memory, so memset is not needed ./drivers/scsi/mvsas/mv_init.c:256:11-29: WARNING: dma_alloc_coherent use in mvi -> rx already zeroes out memory, so memset is not needed ./drivers/scsi/mvsas/mv_init.c:265:13-31: WARNING: dma_alloc_coherent use in mvi -> slot already zeroes out memory, so memset is not needed dma_alloc_coherent() already zeroes out memory so memset() is not needed. Link: https://lore.kernel.org/r/1596078235-54002-1-git-send-email-liheng40@huawei.com Signed-off-by: Li Heng Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/mvsas/mv_init.c b/drivers/scsi/mvsas/mv_init.c index 978f528..6aa2697 100644 --- a/drivers/scsi/mvsas/mv_init.c +++ b/drivers/scsi/mvsas/mv_init.c @@ -246,19 +246,16 @@ 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; @@ -267,7 +264,6 @@ 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,