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igc: change default return of igc_read_phy_reg()

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[ Upstream commit 05682a0a61b6cbecd97a0f37f743b2cbfd516977 ]

Static analysis reports this problem

igc_main.c:4944:20: warning: The left operand of '&'
  is a garbage value
    if (!(phy_data & SR_1000T_REMOTE_RX_STATUS) &&
          ~~~~~~~~ ^

phy_data is set by the call to igc_read_phy_reg() only if
there is a read_reg() op, else it is unset and a 0 is
returned.  Change the return to -EOPNOTSUPP.

Fixes: 208983f099 ("igc: Add watchdog")
Signed-off-by: Tom Rix <trix@redhat.com>
Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Tom Rix 2021-05-21 12:50:19 -07:00 committed by Greg Kroah-Hartman
parent f153664d8e
commit 02d1af0bee
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/intel/igc/igc.h
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@ -532,7 +532,7 @@ static inline s32 igc_read_phy_reg(struct igc_hw *hw, u32 offset, u16 *data)
if (hw->phy.ops.read_reg)
return hw->phy.ops.read_reg(hw, offset, data);
return 0;
return -EOPNOTSUPP;
}
void igc_reinit_locked(struct igc_adapter *);