From: sathyanarayanan kuppuswamy <sathyanarayanan.kuppuswamy@linux.intel.com>
To: Denis Efremov <efremov@linux.com>, Bjorn Helgaas <bhelgaas@google.com>
Cc: Lukas Wunner <lukas@wunner.de>,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 2/4] PCI: pciehp: Switch LED indicators with a single write
Date: Mon, 12 Aug 2019 11:27:26 -0700 [thread overview]
Message-ID: <e96f6fe1-c76d-f264-7692-fc3d1c40cba4@linux.intel.com> (raw)
In-Reply-To: <20190811195944.23765-3-efremov@linux.com>
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@wunner.de>
> Signed-off-by: Denis Efremov <efremov@linux.com>
Reviewed-by: Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.intel.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);
> }
>
> /*
--
Sathyanarayanan Kuppuswamy
Linux kernel developer
next prev parent reply other threads:[~2019-08-12 18:30 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-11 19:59 [PATCH v2 0/4] Simplify PCIe hotplug indicator control Denis Efremov
2019-08-11 19:59 ` [PATCH v2 1/4] PCI: pciehp: Add pciehp_set_indicators() to jointly set LED indicators Denis Efremov
2019-08-12 6:30 ` Lukas Wunner
2019-08-12 18:25 ` sathyanarayanan kuppuswamy
2019-08-12 18:49 ` sathyanarayanan kuppuswamy
2019-08-12 20:40 ` Lukas Wunner
2019-08-12 21:03 ` sathyanarayanan kuppuswamy
2019-08-12 20:03 ` Bjorn Helgaas
2019-08-11 19:59 ` [PATCH v2 2/4] PCI: pciehp: Switch LED indicators with a single write Denis Efremov
2019-08-12 18:27 ` sathyanarayanan kuppuswamy [this message]
2019-08-11 19:59 ` [PATCH v2 3/4] PCI: pciehp: Replace pciehp_set_attention_status() Denis Efremov
2019-08-12 6:32 ` Lukas Wunner
2019-08-12 18:28 ` sathyanarayanan kuppuswamy
2019-08-11 19:59 ` [PATCH v2 4/4] PCI: pciehp: Replace pciehp_green_led_{on,off,blink}() Denis Efremov
2019-08-12 18:45 ` sathyanarayanan kuppuswamy
2019-08-12 20:03 ` Bjorn Helgaas
2019-08-12 21:14 ` Denis Efremov
2019-08-12 22:12 ` Bjorn Helgaas
2019-08-12 20:02 ` [PATCH v2 0/4] Simplify PCIe hotplug indicator control Bjorn Helgaas
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