diff mbox series

[09/87] block: mtip32xx: Remove call to memset after dma_alloc_coherent

Message ID 20190627173506.2297-1-huangfq.daxian@gmail.com (mailing list archive)
State New, archived
Headers show
Series None | expand

Commit Message

Fuqian Huang June 27, 2019, 5:35 p.m. UTC 
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/block/mtip32xx/mtip32xx.c | 5 -----
 1 file changed, 5 deletions(-)

Comments

Jens Axboe June 29, 2019, 3:43 p.m. UTC | #1 
On 6/27/19 11:35 AM, Fuqian Huang wrote:
> 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.

Applied, thanks.
diff mbox series

Patch

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index a14b09ab3a41..964f78cfffa0 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -1577,7 +1577,6 @@  static int exec_drive_command(struct mtip_port *port, u8 *command,
 				ATA_SECT_SIZE * xfer_sz);
 			return -ENOMEM;
 		}
-		memset(buf, 0, ATA_SECT_SIZE * xfer_sz);
 	}
 
 	/* Build the FIS. */
@@ -2776,7 +2775,6 @@  static int mtip_dma_alloc(struct driver_data *dd)
 					&port->block1_dma, GFP_KERNEL);
 	if (!port->block1)
 		return -ENOMEM;
-	memset(port->block1, 0, BLOCK_DMA_ALLOC_SZ);
 
 	/* Allocate dma memory for command list */
 	port->command_list =
@@ -2789,7 +2787,6 @@  static int mtip_dma_alloc(struct driver_data *dd)
 		port->block1_dma = 0;
 		return -ENOMEM;
 	}
-	memset(port->command_list, 0, AHCI_CMD_TBL_SZ);
 
 	/* Setup all pointers into first DMA region */
 	port->rxfis         = port->block1 + AHCI_RX_FIS_OFFSET;
@@ -3529,8 +3526,6 @@  static int mtip_init_cmd(struct blk_mq_tag_set *set, struct request *rq,
 	if (!cmd->command)
 		return -ENOMEM;
 
-	memset(cmd->command, 0, CMD_DMA_ALLOC_SZ);
-
 	sg_init_table(cmd->sg, MTIP_MAX_SG);
 	return 0;
 }