Re: [PATCH v2 2/4] PCI: pciehp: Switch LED indicators with a single write

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Hi,

On 8/11/19 12:59 PM, Denis Efremov wrote:
This patch replaces all consecutive switches of power and attention
indicators with pciehp_set_indicators() call. Thus, performing only
single write to a register.

Reviewed-by: Lukas Wunner <lukas@xxxxxxxxx>
Signed-off-by: Denis Efremov <efremov@xxxxxxxxx>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx>
---
  drivers/pci/hotplug/pciehp_ctrl.c | 14 +++++---------
  drivers/pci/hotplug/pciehp_hpc.c  |  3 +--
  2 files changed, 6 insertions(+), 11 deletions(-)

diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c
index 631ced0ab28a..258a4060466d 100644
--- a/drivers/pci/hotplug/pciehp_ctrl.c
+++ b/drivers/pci/hotplug/pciehp_ctrl.c
@@ -42,8 +42,7 @@ static void set_slot_off(struct controller *ctrl)
  		msleep(1000);
  	}
- pciehp_green_led_off(ctrl);
-	pciehp_set_attention_status(ctrl, 1);
+	pciehp_set_indicators(ctrl, PWR_OFF, ATTN_ON);
  }
/**
@@ -90,8 +89,7 @@ static int board_added(struct controller *ctrl)
  		}
  	}
- pciehp_green_led_on(ctrl);
-	pciehp_set_attention_status(ctrl, 0);
+	pciehp_set_indicators(ctrl, PWR_ON, ATTN_OFF);
  	return 0;
err_exit:
@@ -172,8 +170,7 @@ void pciehp_handle_button_press(struct controller *ctrl)
  				  slot_name(ctrl));
  		}
  		/* blink green LED and turn off amber */
-		pciehp_green_led_blink(ctrl);
-		pciehp_set_attention_status(ctrl, 0);
+		pciehp_set_indicators(ctrl, PWR_BLINK, ATTN_OFF);
  		schedule_delayed_work(&ctrl->button_work, 5 * HZ);
  		break;
  	case BLINKINGOFF_STATE:
@@ -187,12 +184,11 @@ void pciehp_handle_button_press(struct controller *ctrl)
  		cancel_delayed_work(&ctrl->button_work);
  		if (ctrl->state == BLINKINGOFF_STATE) {
  			ctrl->state = ON_STATE;
-			pciehp_green_led_on(ctrl);
+			pciehp_set_indicators(ctrl, PWR_ON, ATTN_OFF);
  		} else {
  			ctrl->state = OFF_STATE;
-			pciehp_green_led_off(ctrl);
+			pciehp_set_indicators(ctrl, PWR_OFF, ATTN_OFF);
  		}
-		pciehp_set_attention_status(ctrl, 0);
  		ctrl_info(ctrl, "Slot(%s): Action canceled due to button press\n",
  			  slot_name(ctrl));
  		break;
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index 5a690b1579ec..68b880bc30db 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -676,8 +676,7 @@ static irqreturn_t pciehp_ist(int irq, void *dev_id)
  	if ((events & PCI_EXP_SLTSTA_PFD) && !ctrl->power_fault_detected) {
  		ctrl->power_fault_detected = 1;
  		ctrl_err(ctrl, "Slot(%s): Power fault\n", slot_name(ctrl));
-		pciehp_set_attention_status(ctrl, 1);
-		pciehp_green_led_off(ctrl);
+		pciehp_set_indicators(ctrl, PWR_OFF, ATTN_ON);
  	}
/*

--
Sathyanarayanan Kuppuswamy
Linux kernel developer




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