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IB/umem: Fix use of npages/nmap fields

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[ Upstream commit edf1a84fe3 ]

In ib_umem structure npages holds original number of sg entries, while
nmap is number of DMA blocks returned by dma_map_sg.

Fixes: c5d76f130b ('IB/core: Add umem function to read data from user-space')
Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Artemy Kovalyov
2017-11-14 14:51:59 +02:00
committed by Greg Kroah-Hartman
parent 251695a39f
commit a3e4b8fe64
1 changed files with 1 additions and 1 deletions
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2
drivers/infiniband/core/umem.c
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@@ -352,7 +352,7 @@ int ib_umem_copy_from(void *dst, struct ib_umem *umem, size_t offset,
return -EINVAL;
}
ret = sg_pcopy_to_buffer(umem->sg_head.sgl, umem->nmap, dst, length,
ret = sg_pcopy_to_buffer(umem->sg_head.sgl, umem->npages, dst, length,
offset + ib_umem_offset(umem));
if (ret < 0)