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

Denis Efremov
2019-08-11T20:00:32Z

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@wunner.de>
Signed-off-by: Denis Efremov <efremov@linux.com>
---
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);
}

/*
--
2.21.0