PCI: pciehp: Combine adjacent indicator updates

Combine adjacent updates of power and attention indicators into a single
pciehp_set_indicators() call.  This sends one command to the hotplug
controller instead of two.

Link: https://lore.kernel.org/r/20190903111021.1559-3-efremov@linux.com
Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Lukas Wunner <lukas@wunner.de>

diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c
index 631ced0..b10c714 100644 (file)
--- a/drivers/pci/hotplug/pciehp_ctrl.c
+++ b/drivers/pci/hotplug/pciehp_ctrl.c
@@ -30,7 +30,10 @@
 
 static void set_slot_off(struct controller *ctrl)
 {
-       /* turn off slot, turn on Amber LED, turn off Green LED if supported*/
+       /*
+        * Turn off slot, turn on attention indicator, turn off power
+        * indicator
+        */
        if (POWER_CTRL(ctrl)) {
                pciehp_power_off_slot(ctrl);
 
@@ -42,8 +45,8 @@ 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, PCI_EXP_SLTCTL_PWR_IND_OFF,
+                             PCI_EXP_SLTCTL_ATTN_IND_ON);
 }
 
 /**
@@ -90,8 +93,8 @@ static int board_added(struct controller *ctrl)
                }
        }
 
-       pciehp_green_led_on(ctrl);
-       pciehp_set_attention_status(ctrl, 0);
+       pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_ON,
+                             PCI_EXP_SLTCTL_ATTN_IND_OFF);
        return 0;
 
 err_exit:
@@ -171,9 +174,9 @@ void pciehp_handle_button_press(struct controller *ctrl)
                        ctrl_info(ctrl, "Slot(%s) Powering on due to button press\n",
                                  slot_name(ctrl));
                }
-               /* blink green LED and turn off amber */
-               pciehp_green_led_blink(ctrl);
-               pciehp_set_attention_status(ctrl, 0);
+               /* blink power indicator and turn off attention */
+               pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_BLINK,
+                                     PCI_EXP_SLTCTL_ATTN_IND_OFF);
                schedule_delayed_work(&ctrl->button_work, 5 * HZ);
                break;
        case BLINKINGOFF_STATE:
@@ -187,12 +190,13 @@ 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, PCI_EXP_SLTCTL_PWR_IND_ON,
+                                             PCI_EXP_SLTCTL_ATTN_IND_OFF);
                } else {
                        ctrl->state = OFF_STATE;
-                       pciehp_green_led_off(ctrl);
+                       pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_OFF,
+                                             PCI_EXP_SLTCTL_ATTN_IND_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 d7ebcd7..a900bfd 100644 (file)
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -674,8 +674,8 @@ 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, PCI_EXP_SLTCTL_PWR_IND_OFF,
+                                     PCI_EXP_SLTCTL_ATTN_IND_ON);
        }
 
        /*