From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: barebox@lists.infradead.org
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Subject: [PATCH 5/8] ahci: Do not zero out DMA coherent memory
Date: Mon, 27 May 2019 11:14:57 -0700 [thread overview]
Message-ID: <20190527181500.17456-5-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <20190527181500.17456-1-andrew.smirnov@gmail.com>
Memory returned by dma_alloc_coherent() should already be zeroed
out, so there's no need to do this explicitly.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
drivers/ata/ahci.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index e6723a337..7dc09d00c 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -342,10 +342,6 @@ static int ahci_init_port(struct ahci_port *ahci_port)
goto err_alloc2;
}
- memset(ahci_port->cmd_slot, 0, AHCI_CMD_SLOT_SZ * 32);
- memset((void *)ahci_port->rx_fis, 0, AHCI_RX_FIS_SZ);
- memset(ahci_port->cmd_tbl, 0, AHCI_CMD_TBL_SZ);
-
ahci_port_debug(ahci_port, "cmd_tbl_dma = 0x%p\n", ahci_port->cmd_tbl);
ahci_port->cmd_tbl_sg = ahci_port->cmd_tbl + AHCI_CMD_TBL_HDR_SZ;
--
2.21.0
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next prev parent reply other threads:[~2019-05-27 18:15 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-27 18:14 [PATCH 1/8] usb: ohci-hcd: " Andrey Smirnov
2019-05-27 18:14 ` [PATCH 2/8] net: rtl8169: " Andrey Smirnov
2019-05-27 18:14 ` [PATCH 3/8] nand: nand_mxs: " Andrey Smirnov
2019-05-27 18:14 ` [PATCH 4/8] apbh: " Andrey Smirnov
2019-05-27 18:14 ` Andrey Smirnov [this message]
2019-05-27 18:14 ` [PATCH 6/8] apbh: Use dma_alloc_coherent() to get DMA address Andrey Smirnov
2019-05-27 18:14 ` [PATCH 7/8] usb: fsl_udc: " Andrey Smirnov
2019-05-27 18:15 ` [PATCH 8/8] usb: ohci: Add dependency on HAS_DMA Andrey Smirnov
2019-05-28 8:38 ` [PATCH 1/8] usb: ohci-hcd: Do not zero out DMA coherent memory Sascha Hauer
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