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RDMA/uverbs: Fix an error flow in ib_uverbs_poll_cq

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The new output_written block was wrongly placed before the ret=0, causing
the error code to be lost. uverbs_output_written is not expected to fail,
and even if it does fail it has no significant impact on the userspace
flow.

Reported-by: Bart Van Assche <bvanassche@acm.org>
Fixes: d6f4a21f30 ("RDMA/uverbs: Mark ioctl responses with UVERBS_ATTR_F_VALID_OUTPUT")
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
This commit is contained in:
Jason Gunthorpe 2019-02-14 20:13:31 +00:00
parent 8994445054
commit 9a7786784d
1 changed files with 1 additions and 2 deletions
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3
drivers/infiniband/core/uverbs_cmd.c
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@ -1186,12 +1186,11 @@ static int ib_uverbs_poll_cq(struct uverbs_attr_bundle *attrs)
ret = -EFAULT; ret = -EFAULT;
goto out_put; goto out_put;
} }
ret = 0;
if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT)) if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT))
ret = uverbs_output_written(attrs, UVERBS_ATTR_CORE_OUT); ret = uverbs_output_written(attrs, UVERBS_ATTR_CORE_OUT);
ret = 0;
out_put: out_put:
uobj_put_obj_read(cq); uobj_put_obj_read(cq);
return ret; return ret;