linux-kernel - Re: [PATCH] PCI: Cancel compilation restrictions on function pcie_clear_device

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Date: Tue, 11 Jun 2024 17:34:18 -0500
From: Bjorn Helgaas <helgaas@...nel.org>
To: Songyang Li <leesongyang@...look.com>
Cc: bhelgaas@...gle.com, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH]  PCI: Cancel compilation restrictions on function
 pcie_clear_device_status

On Tue, Jun 11, 2024 at 11:15:10PM +0800, Songyang Li wrote:
>     Some PCIe devices do not have AER capabilities, but they have device
>     status registers.
> 
>     Signed-off-by: Songyang Li <leesongyang@...look.com>

Unindent this.

Add "()" after function names.

Please explain what this patch does and why we want it.  I can see
from the patch that it makes it so pcie_clear_device_status() is
always compiled, but the commit log should say that and should say why
we need that.

> ---
>  drivers/pci/pci.c | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
>  mode change 100644 => 100755 drivers/pci/pci.c
> 
> diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
> old mode 100644
> new mode 100755
> index 35fb1f17a589..e6de55be4c45
> --- a/drivers/pci/pci.c
> +++ b/drivers/pci/pci.c
> @@ -2263,7 +2263,12 @@ int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state)
>  }
>  EXPORT_SYMBOL_GPL(pci_set_pcie_reset_state);
>  
> -#ifdef CONFIG_PCIEAER
> +/**
> + * pcie_clear_device_status - Clear device status.
> + * @dev: the PCI device.
> + *
> + * Clear the device status for the PCI device.
> + */
>  void pcie_clear_device_status(struct pci_dev *dev)
>  {
>  	u16 sta;
> @@ -2271,7 +2276,6 @@ void pcie_clear_device_status(struct pci_dev *dev)
>  	pcie_capability_read_word(dev, PCI_EXP_DEVSTA, &sta);
>  	pcie_capability_write_word(dev, PCI_EXP_DEVSTA, sta);
>  }
> -#endif
>  
>  /**
>   * pcie_clear_root_pme_status - Clear root port PME interrupt status.
> -- 
> 2.34.1
>