linux-kernel - [PATCH for-next 1/1] net: ntb: migrate to dma_map_phys instead of map

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Message-ID: <20251024062042.29971-2-chuguangqing@inspur.com>
Date: Fri, 24 Oct 2025 14:20:42 +0800
From: Chu Guangqing <chuguangqing@...pur.com>
To: <jdmason@...zu.us>, <dave.jiang@...el.com>, <allenbh@...il.com>
CC: <ntb@...ts.linux.dev>, <linux-kernel@...r.kernel.org>, Chu Guangqing
	<chuguangqing@...pur.com>
Subject: [PATCH for-next 1/1] net: ntb: migrate to dma_map_phys instead of map_page

After introduction of dma_map_phys(), there is no need to convert
from physical address to struct page in order to map page. So let's
use it directly.

Signed-off-by: Chu Guangqing <chuguangqing@...pur.com>
---
 drivers/ntb/ntb_transport.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c
index eb875e3db2e3..f7121a517021 100644
--- a/drivers/ntb/ntb_transport.c
+++ b/drivers/ntb/ntb_transport.c
@@ -1570,15 +1570,15 @@ static int ntb_async_rx_submit(struct ntb_queue_entry *entry, void *offset)
 		goto err;
 
 	unmap->len = len;
-	unmap->addr[0] = dma_map_page(device->dev, virt_to_page(offset),
-				      pay_off, len, DMA_TO_DEVICE);
+	unmap->addr[0] = dma_map_phys(device->dev, virt_to_phys(offset),
+				      len, DMA_TO_DEVICE, 0);
 	if (dma_mapping_error(device->dev, unmap->addr[0]))
 		goto err_get_unmap;
 
 	unmap->to_cnt = 1;
 
-	unmap->addr[1] = dma_map_page(device->dev, virt_to_page(buf),
-				      buff_off, len, DMA_FROM_DEVICE);
+	unmap->addr[1] = dma_map_phys(device->dev, virt_to_phys(buf),
+				      len, DMA_FROM_DEVICE, 0);
 	if (dma_mapping_error(device->dev, unmap->addr[1]))
 		goto err_get_unmap;
 
@@ -1851,8 +1851,8 @@ static int ntb_async_tx_submit(struct ntb_transport_qp *qp,
 		goto err;
 
 	unmap->len = len;
-	unmap->addr[0] = dma_map_page(device->dev, virt_to_page(buf),
-				      buff_off, len, DMA_TO_DEVICE);
+	unmap->addr[0] = dma_map_phys(device->dev, virt_to_phys(buf),
+				      len, DMA_TO_DEVICE, 0);
 	if (dma_mapping_error(device->dev, unmap->addr[0]))
 		goto err_get_unmap;
 
-- 
2.43.7