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IB/mlx4: Fix an error handling path in 'mlx4_ib_rereg_user_mr()' 

Before returning -EPERM we should release some resources, as already done
in the other error handling path of the function.

Fixes: d8f9cc328c ("IB/mlx4: Mark user MR as writable if actual virtual memory is writable")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Christophe Jaillet 2018-06-11 20:15:11 +02:00 committed by Jason Gunthorpe
parent 425cf5c135
commit 3dc7c7badb
1 changed files with 5 additions and 2 deletions
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7
drivers/infiniband/hw/mlx4/mr.c
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@ -486,8 +486,11 @@ int mlx4_ib_rereg_user_mr(struct ib_mr *mr, int flags,
}
if (flags & IB_MR_REREG_ACCESS) {
if (ib_access_writable(mr_access_flags) && !mmr->umem->writable)
return -EPERM;
if (ib_access_writable(mr_access_flags) &&
!mmr->umem->writable) {
err = -EPERM;
goto release_mpt_entry;
}
err = mlx4_mr_hw_change_access(dev->dev, *pmpt_entry,
convert_access(mr_access_flags));