linux-kernel - [PATCH 5.10 290/290] RDMA/umem: Use ib_dma_max_seg_size instead of dma_get_max_seg

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Message-Id: <20210315135551.845274252@linuxfoundation.org>
Date:   Mon, 15 Mar 2021 15:22:40 +0100
From:   gregkh@...uxfoundation.org
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jason Gunthorpe <jgg@...dia.com>,
        Christoph Hellwig <hch@....de>,
        "Marciniszyn, Mike" <mike.marciniszyn@...nelisnetworks.com>
Subject: [PATCH 5.10 290/290] RDMA/umem: Use ib_dma_max_seg_size instead of dma_get_max_seg_size

From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

From: Christoph Hellwig <hch@....de>

commit b116c702791a9834e6485f67ca6267d9fdf59b87 upstream.

RDMA ULPs must not call DMA mapping APIs directly but instead use the
ib_dma_* wrappers.

Fixes: 0c16d9635e3a ("RDMA/umem: Move to allocate SG table from pages")
Link: https://lore.kernel.org/r/20201106181941.1878556-3-hch@lst.de
Reported-by: Jason Gunthorpe <jgg@...dia.com>
Signed-off-by: Christoph Hellwig <hch@....de>
Signed-off-by: Jason Gunthorpe <jgg@...dia.com>
Cc: "Marciniszyn, Mike" <mike.marciniszyn@...nelisnetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/infiniband/core/umem.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/infiniband/core/umem.c
+++ b/drivers/infiniband/core/umem.c
@@ -220,10 +220,10 @@ struct ib_umem *ib_umem_get(struct ib_de
 
 		cur_base += ret * PAGE_SIZE;
 		npages -= ret;
-		sg = __sg_alloc_table_from_pages(
-			&umem->sg_head, page_list, ret, 0, ret << PAGE_SHIFT,
-			dma_get_max_seg_size(device->dma_device), sg, npages,
-			GFP_KERNEL);
+		sg = __sg_alloc_table_from_pages(&umem->sg_head, page_list, ret,
+				0, ret << PAGE_SHIFT,
+				ib_dma_max_seg_size(device), sg, npages,
+				GFP_KERNEL);
 		umem->sg_nents = umem->sg_head.nents;
 		if (IS_ERR(sg)) {
 			unpin_user_pages_dirty_lock(page_list, ret, 0);