linux-kernel - Re: [PATCH v2 5/8] PCI/ASPM: Return enabled ASPM states from pcie_aspm

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Message-ID: <0993bd25-3cab-4f96-9398-bf5b5f7770cd@oss.qualcomm.com>
Date: Tue, 26 Aug 2025 08:19:09 -0700
From: Jeff Johnson <jeff.johnson@....qualcomm.com>
To: manivannan.sadhasivam@....qualcomm.com,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Manivannan Sadhasivam
 <mani@...nel.org>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kwilczynski@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Nirmal Patel <nirmal.patel@...ux.intel.com>,
        Jonathan Derrick <jonathan.derrick@...ux.dev>,
        Jeff Johnson <jjohnson@...nel.org>
Cc: linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-wireless@...r.kernel.org,
        ath12k@...ts.infradead.org, ath11k@...ts.infradead.org,
        ath10k@...ts.infradead.org,
        Ilpo Järvinen
 <ilpo.jarvinen@...ux.intel.com>,
        Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Subject: Re: [PATCH v2 5/8] PCI/ASPM: Return enabled ASPM states from
 pcie_aspm_enabled() API

On 8/25/2025 10:44 AM, Manivannan Sadhasivam via B4 Relay wrote:
> --- a/include/linux/pci.h
> +++ b/include/linux/pci.h
> @@ -1851,7 +1851,7 @@ int pci_enable_link_state(struct pci_dev *pdev, int state);
>  int pci_enable_link_state_locked(struct pci_dev *pdev, int state);
>  void pcie_no_aspm(void);
>  bool pcie_aspm_support_enabled(void);
> -bool pcie_aspm_enabled(struct pci_dev *pdev);
> +u32 pcie_aspm_enabled(struct pci_dev *pdev);
>  #else
>  static inline int pci_disable_link_state(struct pci_dev *pdev, int state)
>  { return 0; }
> @@ -1863,7 +1863,7 @@ static inline int pci_enable_link_state_locked(struct pci_dev *pdev, int state)
>  { return 0; }
>  static inline void pcie_no_aspm(void) { }
>  static inline bool pcie_aspm_support_enabled(void) { return false; }
> -static inline bool pcie_aspm_enabled(struct pci_dev *pdev) { return false; }
> +static inline u32 pcie_aspm_enabled(struct pci_dev *pdev) { return false; }

return 0?

>  #endif
>  
>  #ifdef CONFIG_HOTPLUG_PCI
>