From: Tom Rix <trix@redhat.com>
Date: Fri, 21 May 2021 19:50:19 +0000 (-0700)
Subject: igc: change default return of igc_read_phy_reg()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=05682a0a61b6cbecd97a0f37f743b2cbfd516977;p=linux.git

igc: change default return of igc_read_phy_reg()

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: 208983f099d9 ("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>
---

diff --git a/drivers/net/ethernet/intel/igc/igc.h b/drivers/net/ethernet/intel/igc/igc.h
index 9e0bbb2e55e31..5901ed9fb545e 100644
--- a/drivers/net/ethernet/intel/igc/igc.h
+++ b/drivers/net/ethernet/intel/igc/igc.h
@@ -578,7 +578,7 @@ 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 *);