Remove unnecessary casts of constant values to u16.
C's integer promotion rules make them ints no matter what.

Additionally replace E1000_MNG_VLAN_NONE with resulting value
rather than casting -1 to u16.

Signed-off-by: Jacek Kowalski <[email protected]>
Suggested-by: Simon Horman <[email protected]>
---
 drivers/net/ethernet/intel/e1000e/e1000.h   | 2 +-
 drivers/net/ethernet/intel/e1000e/ethtool.c | 2 +-
 drivers/net/ethernet/intel/e1000e/netdev.c  | 4 ++--
 drivers/net/ethernet/intel/e1000e/nvm.c     | 4 ++--
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/intel/e1000e/e1000.h 
b/drivers/net/ethernet/intel/e1000e/e1000.h
index 952898151565..018e61aea787 100644
--- a/drivers/net/ethernet/intel/e1000e/e1000.h
+++ b/drivers/net/ethernet/intel/e1000e/e1000.h
@@ -64,7 +64,7 @@ struct e1000_info;
 #define AUTO_ALL_MODES                 0
 #define E1000_EEPROM_APME              0x0400
 
-#define E1000_MNG_VLAN_NONE            (-1)
+#define E1000_MNG_VLAN_NONE            0xFFFF
 
 #define DEFAULT_JUMBO                  9234
 
diff --git a/drivers/net/ethernet/intel/e1000e/ethtool.c 
b/drivers/net/ethernet/intel/e1000e/ethtool.c
index c0bbb12eed2e..06482ad50508 100644
--- a/drivers/net/ethernet/intel/e1000e/ethtool.c
+++ b/drivers/net/ethernet/intel/e1000e/ethtool.c
@@ -959,7 +959,7 @@ static int e1000_eeprom_test(struct e1000_adapter *adapter, 
u64 *data)
        }
 
        /* If Checksum is not Correct return error else test passed */
-       if ((checksum != (u16)NVM_SUM) && !(*data))
+       if (checksum != NVM_SUM && !(*data))
                *data = 2;
 
        return *data;
diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c 
b/drivers/net/ethernet/intel/e1000e/netdev.c
index 7719e15813ee..58cfc63e95ac 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -2761,7 +2761,7 @@ static void e1000e_vlan_filter_disable(struct 
e1000_adapter *adapter)
                rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN);
                ew32(RCTL, rctl);
 
-               if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) {
+               if (adapter->mng_vlan_id != E1000_MNG_VLAN_NONE) {
                        e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q),
                                               adapter->mng_vlan_id);
                        adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
@@ -2828,7 +2828,7 @@ static void e1000_update_mng_vlan(struct e1000_adapter 
*adapter)
                adapter->mng_vlan_id = vid;
        }
 
-       if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && (vid != old_vid))
+       if (old_vid != E1000_MNG_VLAN_NONE && vid != old_vid)
                e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q), old_vid);
 }
 
diff --git a/drivers/net/ethernet/intel/e1000e/nvm.c 
b/drivers/net/ethernet/intel/e1000e/nvm.c
index 16369e6d245a..4bde1c9de1b9 100644
--- a/drivers/net/ethernet/intel/e1000e/nvm.c
+++ b/drivers/net/ethernet/intel/e1000e/nvm.c
@@ -564,7 +564,7 @@ s32 e1000e_validate_nvm_checksum_generic(struct e1000_hw 
*hw)
                return 0;
        }
 
-       if (checksum != (u16)NVM_SUM) {
+       if (checksum != NVM_SUM) {
                e_dbg("NVM Checksum Invalid\n");
                return -E1000_ERR_NVM;
        }
@@ -594,7 +594,7 @@ s32 e1000e_update_nvm_checksum_generic(struct e1000_hw *hw)
                }
                checksum += nvm_data;
        }
-       checksum = (u16)NVM_SUM - checksum;
+       checksum = NVM_SUM - checksum;
        ret_val = e1000_write_nvm(hw, NVM_CHECKSUM_REG, 1, &checksum);
        if (ret_val)
                e_dbg("NVM Write Error while updating checksum.\n");
-- 
2.47.2

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