net/mlx5: Fix return code in case of hyperv wrong size read

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Return code value could be non deterministic in case of wrong size read.
With this patch, if such error occurs, set rc to be -EIO.

In addition, mlx5_hv_config_common() supports reading of
HV_CONFIG_BLOCK_SIZE_MAX bytes only, fix to early return error with
bad input.

Fixes: 913d14e866 ("net/mlx5: Add wrappers for HyperV PCIe operations")
Reported-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Eran Ben Elisha 2019-08-23 15:34:47 +03:00 • committed by David S. Miller

parent c7a42eb492

commit 87cade2997

1 changed files with 3 additions and 3 deletions

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drivers/net/ethernet/mellanox/mlx5/core/lib/hv.c

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