netdev - [net-next 05/12] i40e: Fix for 10G ports LED not blinking

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Message-Id: <20190301050352.14978-6-jeffrey.t.kirsher@intel.com>
Date:   Thu, 28 Feb 2019 21:03:45 -0800
From:   Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:     davem@...emloft.net
Cc:     Piotr Marczak <piotr.marczak@...el.com>, netdev@...r.kernel.org,
        nhorman@...hat.com, sassmann@...hat.com,
        Andrew Bowers <andrewx.bowers@...el.com>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 05/12] i40e: Fix for 10G ports LED not blinking

From: Piotr Marczak <piotr.marczak@...el.com>

On some hardware LEDs would not blink after command 'ethtool -p {eth-port}'
in certain circumstances. Now, function does not care about the activity
of the LED (though still preserves its state) but forcibly executes
identification blinking and then restores the LED state.

Signed-off-by: Piotr Marczak <piotr.marczak@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 drivers/net/ethernet/intel/i40e/i40e_common.c | 33 -------------------
 1 file changed, 33 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_common.c b/drivers/net/ethernet/intel/i40e/i40e_common.c
index 486a406789b8..dd6b3b3ac5c6 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_common.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_common.c
@@ -1466,7 +1466,6 @@ static u32 i40e_led_is_mine(struct i40e_hw *hw, int idx)
  **/
 u32 i40e_led_get(struct i40e_hw *hw)
 {
-	u32 current_mode = 0;
 	u32 mode = 0;
 	int i;
 
@@ -1479,21 +1478,6 @@ u32 i40e_led_get(struct i40e_hw *hw)
 		if (!gpio_val)
 			continue;
 
-		/* ignore gpio LED src mode entries related to the activity
-		 * LEDs
-		 */
-		current_mode = ((gpio_val & I40E_GLGEN_GPIO_CTL_LED_MODE_MASK)
-				>> I40E_GLGEN_GPIO_CTL_LED_MODE_SHIFT);
-		switch (current_mode) {
-		case I40E_COMBINED_ACTIVITY:
-		case I40E_FILTER_ACTIVITY:
-		case I40E_MAC_ACTIVITY:
-		case I40E_LINK_ACTIVITY:
-			continue;
-		default:
-			break;
-		}
-
 		mode = (gpio_val & I40E_GLGEN_GPIO_CTL_LED_MODE_MASK) >>
 			I40E_GLGEN_GPIO_CTL_LED_MODE_SHIFT;
 		break;
@@ -1513,7 +1497,6 @@ u32 i40e_led_get(struct i40e_hw *hw)
  **/
 void i40e_led_set(struct i40e_hw *hw, u32 mode, bool blink)
 {
-	u32 current_mode = 0;
 	int i;
 
 	if (mode & 0xfffffff0)
@@ -1527,22 +1510,6 @@ void i40e_led_set(struct i40e_hw *hw, u32 mode, bool blink)
 
 		if (!gpio_val)
 			continue;
-
-		/* ignore gpio LED src mode entries related to the activity
-		 * LEDs
-		 */
-		current_mode = ((gpio_val & I40E_GLGEN_GPIO_CTL_LED_MODE_MASK)
-				>> I40E_GLGEN_GPIO_CTL_LED_MODE_SHIFT);
-		switch (current_mode) {
-		case I40E_COMBINED_ACTIVITY:
-		case I40E_FILTER_ACTIVITY:
-		case I40E_MAC_ACTIVITY:
-		case I40E_LINK_ACTIVITY:
-			continue;
-		default:
-			break;
-		}
-
 		gpio_val &= ~I40E_GLGEN_GPIO_CTL_LED_MODE_MASK;
 		/* this & is a bit of paranoia, but serves as a range check */
 		gpio_val |= ((mode << I40E_GLGEN_GPIO_CTL_LED_MODE_SHIFT) &
-- 
2.20.1