ixgbe: fix errors related to protected AUTOC calls

Found several incorrect conditionals after calling the prot_autoc_*
functions. Likewise we weren't always freeing the FWSW semaphore after
grabbing it.   This would lead to DA cables being unable to link along with
possible other errors.

CC: Arun Sharma <asharma@fb.com>
CC: Emil Tantilov <emil.s.tantilov@intel.com>
Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
index 3bc9b67..572cce4 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
@@ -210,7 +210,7 @@ static s32 prot_autoc_read_82599(struct ixgbe_hw *hw, bool *locked,
        if (ixgbe_verify_lesm_fw_enabled_82599(hw)) {
                ret_val = hw->mac.ops.acquire_swfw_sync(hw,
                                        IXGBE_GSSR_MAC_CSR_SM);
-               if (!ret_val)
+               if (ret_val)
                        return IXGBE_ERR_SWFW_SYNC;
 
                *locked = true;
@@ -245,8 +245,10 @@ static s32 prot_autoc_write_82599(struct ixgbe_hw *hw, u32 autoc, bool locked)
        if (!locked && ixgbe_verify_lesm_fw_enabled_82599(hw)) {
                ret_val = hw->mac.ops.acquire_swfw_sync(hw,
                                        IXGBE_GSSR_MAC_CSR_SM);
-               if (!ret_val)
+               if (ret_val)
                        return IXGBE_ERR_SWFW_SYNC;
+
+               locked = true;
        }
 
        IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc);
@@ -1094,7 +1096,7 @@ static s32 ixgbe_setup_mac_link_82599(struct ixgbe_hw *hw,
        if (autoc != start_autoc) {
                /* Restart link */
                status = hw->mac.ops.prot_autoc_write(hw, autoc, false);
-               if (!status)
+               if (status)
                        goto out;
 
                /* Only poll for autoneg to complete if specified to do so */
@@ -1277,7 +1279,7 @@ mac_reset_top:
                        status = hw->mac.ops.prot_autoc_write(hw,
                                                        hw->mac.orig_autoc,
                                                        false);
-                       if (!status)
+                       if (status)
                                goto reset_hw_out;
                }
 

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
index 6149c65..38ca240 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
@@ -143,7 +143,7 @@ static s32 ixgbe_setup_fc(struct ixgbe_hw *hw)
        case ixgbe_media_type_backplane:
                /* some MAC's need RMW protection on AUTOC */
                ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &reg_bp);
-               if (!ret_val)
+               if (ret_val)
                        goto out;
 
                /* only backplane uses autoc so fall though */
@@ -2723,14 +2723,14 @@ s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index)
 
        if (!link_up) {
                ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg);
-               if (!ret_val)
+               if (ret_val)
                        goto out;
 
                autoc_reg |= IXGBE_AUTOC_AN_RESTART;
                autoc_reg |= IXGBE_AUTOC_FLU;
 
                ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked);
-               if (!ret_val)
+               if (ret_val)
                        goto out;
 
                IXGBE_WRITE_FLUSH(hw);
@@ -2760,14 +2760,14 @@ s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index)
        bool locked = false;
 
        ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg);
-       if (!ret_val)
+       if (ret_val)
                goto out;
 
        autoc_reg &= ~IXGBE_AUTOC_FLU;
        autoc_reg |= IXGBE_AUTOC_AN_RESTART;
 
        ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked);
-       if (!ret_val)
+       if (ret_val)
                goto out;
 
        led_reg &= ~IXGBE_LED_MODE_MASK(index);