Re: [PATCH v3 3/3] cxl/pci: Replace host_bridge->native_aer with pcie_aer_is_native()

[Jonathan Cameron <Jonathan.Cameron@Huawei.com>]

On Thu, 3 Aug 2023 23:01:29 +0000
Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com> wrote:

> Use pcie_aer_is_native() to determine the native AER ownership as the
> usage of host_bride->native_aer does not cover command line override of
> AER ownership.
> 
> Signed-off-by: Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com>
> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
> Reviewed-by: Robert Richter <rrichter@amd.com>
I hope there aren't systems getting this wrong but make sense to support
same override as for other cases.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

> ---
> v2:
> 	Replaced pcie_aer_is_native() at a later stage for automated
> 	backports.
> v3:
> 	Added more context to commit message.
> 	Added "Reviewed-by" tag.
> ---
>  drivers/cxl/pci.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c
> index 2323169b6e5f..44a21ab7add5 100644
> --- a/drivers/cxl/pci.c
> +++ b/drivers/cxl/pci.c
> @@ -529,7 +529,6 @@ static int cxl_pci_setup_regs(struct pci_dev *pdev, enum cxl_regloc_type type,
>  
>  static int cxl_pci_ras_unmask(struct pci_dev *pdev)
>  {
> -	struct pci_host_bridge *host_bridge = pci_find_host_bridge(pdev->bus);
>  	struct cxl_dev_state *cxlds = pci_get_drvdata(pdev);
>  	void __iomem *addr;
>  	u32 orig_val, val, mask;
> @@ -542,7 +541,7 @@ static int cxl_pci_ras_unmask(struct pci_dev *pdev)
>  	}
>  
>  	/* BIOS has PCIe AER error control */
> -	if (!host_bridge->native_aer)
> +	if (!pcie_aer_is_native(pdev))
>  		return 0;
>  
>  	rc = pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &cap);