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From: Ethan Zhao <xerces.zhao@gmail.com>
To: Kuppuswamy Sathyanarayanan  <sathyanarayanan.kuppuswamy@linux.intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
	linux-pci <linux-pci@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Ashok Raj <ashok.raj@intel.com>,
	knsathya@kernel.org
Subject: Re: [PATCH v10 5/5] PCI/DPC: Move AER/DPC dependency checks out of DPC driver
Date: Wed, 28 Oct 2020 13:42:57 +0800
Message-ID: <CAKF3qh0WccKyNa9hGK7g+F9eZ_jE9UK-WqUb1EOrz+_Hz2ceAg@mail.gmail.com> (raw)
In-Reply-To: <3cb6923f879b64a80df3670facdee327bcc39a4c.1603738449.git.sathyanarayanan.kuppuswamy@linux.intel.com>

On Tue, Oct 27, 2020 at 11:12 AM Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.intel.com> wrote:
>
> Currently, AER and DPC Capabilities dependency checks is
> distributed between DPC and portdrv service drivers. So move
> them out of DPC driver.
>
> Also, since services & PCIE_PORT_SERVICE_AER check already
> ensures AER native ownership, no need to add additional
> pcie_aer_is_native() check.
>
> Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
> ---
>  drivers/pci/pcie/dpc.c          | 4 ----
>  drivers/pci/pcie/portdrv_core.c | 1 +
>  2 files changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c
> index 21f77420632b..a8b922044447 100644
> --- a/drivers/pci/pcie/dpc.c
> +++ b/drivers/pci/pcie/dpc.c
> @@ -283,14 +283,10 @@ void pci_dpc_init(struct pci_dev *pdev)
>  static int dpc_probe(struct pcie_device *dev)
>  {
>         struct pci_dev *pdev = dev->port;
> -       struct pci_host_bridge *host = pci_find_host_bridge(pdev->bus);
>         struct device *device = &dev->device;
>         int status;
>         u16 ctl, cap;
>
> -       if (!pcie_aer_is_native(pdev) && !host->native_dpc)
> -               return -ENOTSUPP;
> -
>         status = devm_request_threaded_irq(device, dev->irq, dpc_irq,
>                                            dpc_handler, IRQF_SHARED,
>                                            "pcie-dpc", pdev);
> diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
> index e257a2ca3595..ffa1d9fc458e 100644
> --- a/drivers/pci/pcie/portdrv_core.c
> +++ b/drivers/pci/pcie/portdrv_core.c
> @@ -252,6 +252,7 @@ static int get_port_device_capability(struct pci_dev *dev)
>          * permission to use AER.
>          */
>         if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_DPC) &&
> +           host->native_dpc &&
What hell the logic is here ?
>             (host->native_dpc || (services & PCIE_PORT_SERVICE_AER)))
>                 services |= PCIE_PORT_SERVICE_DPC;
>
> --
> 2.17.1
>

      reply index

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-26 18:56 [PATCH v10 0/5] Simplify PCIe native ownership detection logic Kuppuswamy Sathyanarayanan
2020-10-26 18:56 ` [PATCH v10 1/5] PCI: Conditionally initialize host bridge native_* members Kuppuswamy Sathyanarayanan
2020-10-26 18:56 ` [PATCH v10 2/5] ACPI/PCI: Ignore _OSC negotiation result if pcie_ports_native is set Kuppuswamy Sathyanarayanan
2020-10-27  1:01   ` kernel test robot
2020-10-26 18:56 ` [PATCH v10 3/5] ACPI/PCI: Ignore _OSC DPC negotiation result if pcie_ports_dpc_native " Kuppuswamy Sathyanarayanan
2020-10-26 18:56 ` [PATCH v10 4/5] PCI/portdrv: Remove redundant pci_aer_available() check in DPC enable logic Kuppuswamy Sathyanarayanan
2020-10-26 18:56 ` [PATCH v10 5/5] PCI/DPC: Move AER/DPC dependency checks out of DPC driver Kuppuswamy Sathyanarayanan
2020-10-28  5:42   ` Ethan Zhao [this message]

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