linux-kernel - [PATCH 6.7 597/713] RDMA/mana_ib: Fix bug in creation of dma regions

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Date: Sun, 24 Mar 2024 18:45:23 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Konstantin Taranov <kotaranov@...rosoft.com>,
	Leon Romanovsky <leon@...nel.org>,
	Sasha Levin <sashal@...nel.org>
Subject: [PATCH 6.7 597/713] RDMA/mana_ib: Fix bug in creation of dma regions

From: Konstantin Taranov <kotaranov@...rosoft.com>

[ Upstream commit e02497fb654689049ba8b46f098f17d5f19e0b3c ]

Use ib_umem_dma_offset() helper to calculate correct dma offset.

Fixes: 0266a177631d ("RDMA/mana_ib: Add a driver for Microsoft Azure Network Adapter")
Signed-off-by: Konstantin Taranov <kotaranov@...rosoft.com>
Link: https://lore.kernel.org/r/1709560361-26393-2-git-send-email-kotaranov@linux.microsoft.com
Signed-off-by: Leon Romanovsky <leon@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/infiniband/hw/mana/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
index 7be4c3adb4e2b..ab91009aea883 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -358,7 +358,7 @@ int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem,
 			     sizeof(struct gdma_create_dma_region_resp));
 
 	create_req->length = umem->length;
-	create_req->offset_in_page = umem->address & (page_sz - 1);
+	create_req->offset_in_page = ib_umem_dma_offset(umem, page_sz);
 	create_req->gdma_page_type = order_base_2(page_sz) - PAGE_SHIFT;
 	create_req->page_count = num_pages_total;
 
-- 
2.43.0