ixgbe: fix the FWSM.PT check in ixgbe_mng_present()

Bits other than FWSM.PT can be set in IXGBE_SWFW_MODE_MASK making the
previous check invalid.

Change the check for MNG present to be only based on FWSM.PT bit.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
index 041940c..4e5c92d 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
@@ -4100,8 +4100,8 @@ bool ixgbe_mng_present(struct ixgbe_hw *hw)
                return false;
 
        fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw));
-       fwsm &= IXGBE_FWSM_MODE_MASK;
-       return fwsm == IXGBE_FWSM_FW_MODE_PT;
+
+       return !!(fwsm & IXGBE_FWSM_FW_MODE_PT);
 }
 
 /**