ethtool: Fix link extended state for big endian

[ Upstream commit e2f08207c558bc0bc8abaa557cdb29bad776ac7b ]

The link extended sub-states are assigned as enum that is an integer
size but read from a union as u8, this is working for small values on
little endian systems but for big endian this always give 0. Fix the
variable in the union to match the enum size.

Fixes: ecc31c60240b ("ethtool: Add link extended state")
Signed-off-by: Moshe Tal <moshet@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Tested-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 849524b55d89a66483f7fdfdf1401e753d5762dd..3fad741df53efb1d70faec848a1c38907abb9e59 100644 (file)
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -94,7 +94,7 @@ struct ethtool_link_ext_state_info {
                enum ethtool_link_ext_substate_link_logical_mismatch link_logical_mismatch;
                enum ethtool_link_ext_substate_bad_signal_integrity bad_signal_integrity;
                enum ethtool_link_ext_substate_cable_issue cable_issue;
-               u8 __link_ext_substate;
+               u32 __link_ext_substate;
        };
 };