Re: [PATCH net-next] igc: Remove set but not used variables 'ctrl_ext, link_mode'

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On 10/19/2018 15:40, YueHaibing wrote:
Fixes gcc '-Wunused-but-set-variable' warning:

drivers/net/ethernet/intel/igc/igc_base.c: In function 'igc_init_phy_params_base':
drivers/net/ethernet/intel/igc/igc_base.c:240:6: warning:
  variable 'ctrl_ext' set but not used [-Wunused-but-set-variable]
   u32 ctrl_ext;
drivers/net/ethernet/intel/igc/igc_base.c: In function 'igc_get_invariants_base':
drivers/net/ethernet/intel/igc/igc_base.c:290:6: warning:
  variable 'link_mode' set but not used [-Wunused-but-set-variable]
   u32 link_mode = 0;

It never used since introduction in
commit c0071c7aa5fe ("igc: Add HW initialization code")

Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
I'm not sure that reading IGC_CTRL_EXT is necessary.
---
  drivers/net/ethernet/intel/igc/igc_base.c | 8 --------
  1 file changed, 8 deletions(-)

diff --git a/drivers/net/ethernet/intel/igc/igc_base.c b/drivers/net/ethernet/intel/igc/igc_base.c
index 832da609..df40af7 100644
--- a/drivers/net/ethernet/intel/igc/igc_base.c
+++ b/drivers/net/ethernet/intel/igc/igc_base.c
@@ -237,7 +237,6 @@ static s32 igc_init_phy_params_base(struct igc_hw *hw)
  {
  	struct igc_phy_info *phy = &hw->phy;
  	s32 ret_val = 0;
-	u32 ctrl_ext;
if (hw->phy.media_type != igc_media_type_copper) {
  		phy->type = igc_phy_none;
@@ -247,8 +246,6 @@ static s32 igc_init_phy_params_base(struct igc_hw *hw)
  	phy->autoneg_mask	= AUTONEG_ADVERTISE_SPEED_DEFAULT_2500;
  	phy->reset_delay_us	= 100;
- ctrl_ext = rd32(IGC_CTRL_EXT);
-
  	/* set lan id */
  	hw->bus.func = (rd32(IGC_STATUS) & IGC_STATUS_FUNC_MASK) >>
  			IGC_STATUS_FUNC_SHIFT;
@@ -287,8 +284,6 @@ static s32 igc_init_phy_params_base(struct igc_hw *hw)
  static s32 igc_get_invariants_base(struct igc_hw *hw)
  {
  	struct igc_mac_info *mac = &hw->mac;
-	u32 link_mode = 0;
-	u32 ctrl_ext = 0;
  	s32 ret_val = 0;
switch (hw->device_id) {
@@ -302,9 +297,6 @@ static s32 igc_get_invariants_base(struct igc_hw *hw)
hw->phy.media_type = igc_media_type_copper; - ctrl_ext = rd32(IGC_CTRL_EXT);
-	link_mode = ctrl_ext & IGC_CTRL_EXT_LINK_MODE_MASK;
-
  	/* mac initialization and operations */
  	ret_val = igc_init_mac_params_base(hw);
  	if (ret_val)

Thanks for the patch. Good.

Acked-by: Sasha Neftin <sasha.neftin@xxxxxxxxx>



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