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ethtool: avoid signed-unsigned comparison in ethtool_validate_speed()

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When building C++ userspace code that includes ethtool.h
with "-Werror -Wall", g++ complains about signed-unsigned comparison in
ethtool_validate_speed() due to definition of SPEED_UNKNOWN as -1.

Explicitly cast SPEED_UNKNOWN to __u32 to match type of
ethtool_validate_speed() argument.

Signed-off-by: Michael Zhivich <mzhivich@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Zhivich 2019-04-08 10:48:45 -04:00 committed by David S. Miller
parent 3c5189ad70
commit afe64245af
1 changed files with 1 additions and 1 deletions
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2
include/uapi/linux/ethtool.h
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@ -1591,7 +1591,7 @@ enum ethtool_link_mode_bit_indices {
static inline int ethtool_validate_speed(__u32 speed)
{
return speed <= INT_MAX || speed == SPEED_UNKNOWN;
return speed <= INT_MAX || speed == (__u32)SPEED_UNKNOWN;
}
/* Duplex, half or full. */