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igb: override two checker warnings

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The igb PTP code was using htons() on a constant to try to
byte swap the value before writing it to a register. This byte
swap has the consequence of triggering sparse conflicts between
the register write which expect cpu ordered input, and the code
which generated a big endian constant. Just override the cast
to make sure code doesn't change but silence the warning.

Can't do a __swab16 in this case because big endian systems
would then write the wrong value.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Dave Switzer <david.switzer@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Jesse Brandeburg 2021-03-25 17:38:30 -07:00 committed by Tony Nguyen
parent b514958dd1
commit 9fb8602e56
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/intel/igb/igb_ptp.c
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@ -1134,12 +1134,12 @@ static int igb_ptp_set_timestamp_mode(struct igb_adapter *adapter,
| E1000_FTQF_MASK); /* mask all inputs */
ftqf &= ~E1000_FTQF_MASK_PROTO_BP; /* enable protocol check */
wr32(E1000_IMIR(3), htons(PTP_EV_PORT));
wr32(E1000_IMIR(3), (__force unsigned int)htons(PTP_EV_PORT));
wr32(E1000_IMIREXT(3),
(E1000_IMIREXT_SIZE_BP | E1000_IMIREXT_CTRL_BP));
if (hw->mac.type == e1000_82576) {
/* enable source port check */
wr32(E1000_SPQF(3), htons(PTP_EV_PORT));
wr32(E1000_SPQF(3), (__force unsigned int)htons(PTP_EV_PORT));
ftqf &= ~E1000_FTQF_MASK_SOURCE_PORT_BP;
}
wr32(E1000_FTQF(3), ftqf);