net/ixgbe/base: replace an operation in X550 setup

Replace "=" operation with "|=" operation to only set the intended
register bits.

Signed-off-by: Xiaoyun Li <xiaoyun.li@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>

diff --git a/drivers/net/ixgbe/base/ixgbe_x550.c b/drivers/net/ixgbe/base/ixgbe_x550.c
index c9f1563..d5bbfad 100644 (file)
--- a/drivers/net/ixgbe/base/ixgbe_x550.c
+++ b/drivers/net/ixgbe/base/ixgbe_x550.c
@@ -2780,9 +2780,9 @@ s32 ixgbe_setup_mac_link_sfp_x550a(struct ixgbe_hw *hw,
                                 (IXGBE_CS4227_EDC_MODE_SR << 1));
 
                if (setup_linear)
-                       reg_phy_ext = (IXGBE_CS4227_EDC_MODE_CX1 << 1) | 0x1;
+                       reg_phy_ext |= (IXGBE_CS4227_EDC_MODE_CX1 << 1) | 0x1;
                else
-                       reg_phy_ext = (IXGBE_CS4227_EDC_MODE_SR << 1) | 0x1;
+                       reg_phy_ext |= (IXGBE_CS4227_EDC_MODE_SR << 1) | 0x1;
                ret_val = hw->phy.ops.write_reg(hw, reg_slice,
                                         IXGBE_MDIO_ZERO_DEV_TYPE, reg_phy_ext);