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Message-ID: <8bf3e3c0-78b6-7121-1951-300175ede3b9@linux.intel.com>
Date:   Tue, 27 Sep 2022 12:59:27 -0700
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Subject: Re: [PATCH v2 5/9] PCI/AER: Unexport pci_aer_clear_nonfatal_status()
Content-Language: en-US
To:     Zhuo Chen <chenzhuo.1@bytedance.com>, bhelgaas@google.com,
        ruscur@russell.cc, oohall@gmail.com, fancer.lancer@gmail.com,
        jdmason@kudzu.us, dave.jiang@intel.com, allenbh@gmail.com,
        james.smart@broadcom.com, dick.kennedy@broadcom.com,
        jejb@linux.ibm.com, martin.petersen@oracle.com
Cc:     linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org,
        linux-kernel@vger.kernel.org, ntb@lists.linux.dev,
        linux-scsi@vger.kernel.org
References: <20220927153524.49172-1-chenzhuo.1@bytedance.com>
 <20220927153524.49172-6-chenzhuo.1@bytedance.com>
From:   Sathyanarayanan Kuppuswamy 
        <sathyanarayanan.kuppuswamy@linux.intel.com>
In-Reply-To: <20220927153524.49172-6-chenzhuo.1@bytedance.com>
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On 9/27/22 8:35 AM, Zhuo Chen wrote:
> Since pci_aer_clear_nonfatal_status() is used only internally, move
> its declaration to the PCI internal header file. Also, no one cares
> about return value of pci_aer_clear_nonfatal_status(), so make it void.
> 
> Signed-off-by: Zhuo Chen <chenzhuo.1@bytedance.com>
> ---

Looks good to me.

>  drivers/pci/pci.h      | 2 ++
>  drivers/pci/pcie/aer.c | 7 ++-----
>  include/linux/aer.h    | 5 -----
>  3 files changed, 4 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
> index 785f31086313..a114175d08e4 100644
> --- a/drivers/pci/pci.h
> +++ b/drivers/pci/pci.h
> @@ -684,6 +684,7 @@ void pci_aer_init(struct pci_dev *dev);
>  void pci_aer_exit(struct pci_dev *dev);
>  extern const struct attribute_group aer_stats_attr_group;
>  void pci_aer_clear_fatal_status(struct pci_dev *dev);
> +void pci_aer_clear_nonfatal_status(struct pci_dev *dev);
>  int pci_aer_clear_status(struct pci_dev *dev);
>  int pci_aer_raw_clear_status(struct pci_dev *dev);
>  #else
> @@ -691,6 +692,7 @@ static inline void pci_no_aer(void) { }
>  static inline void pci_aer_init(struct pci_dev *d) { }
>  static inline void pci_aer_exit(struct pci_dev *d) { }
>  static inline void pci_aer_clear_fatal_status(struct pci_dev *dev) { }
> +static inline void pci_aer_clear_nonfatal_status(struct pci_dev *dev) { }
>  static inline int pci_aer_clear_status(struct pci_dev *dev) { return -EINVAL; }
>  static inline int pci_aer_raw_clear_status(struct pci_dev *dev) { return -EINVAL; }
>  #endif
> diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
> index 4e637121be23..e2ebd108339d 100644
> --- a/drivers/pci/pcie/aer.c
> +++ b/drivers/pci/pcie/aer.c
> @@ -251,13 +251,13 @@ int pci_disable_pcie_error_reporting(struct pci_dev *dev)
>  }
>  EXPORT_SYMBOL_GPL(pci_disable_pcie_error_reporting);
>  
> -int pci_aer_clear_nonfatal_status(struct pci_dev *dev)
> +void pci_aer_clear_nonfatal_status(struct pci_dev *dev)
>  {
>  	int aer = dev->aer_cap;
>  	u32 status, sev;
>  
>  	if (!pcie_aer_is_native(dev))
> -		return -EIO;
> +		return;
>  
>  	/* Clear status bits for ERR_NONFATAL errors only */
>  	pci_read_config_dword(dev, aer + PCI_ERR_UNCOR_STATUS, &status);
> @@ -265,10 +265,7 @@ int pci_aer_clear_nonfatal_status(struct pci_dev *dev)
>  	status &= ~sev;
>  	if (status)
>  		pci_write_config_dword(dev, aer + PCI_ERR_UNCOR_STATUS, status);
> -
> -	return 0;
>  }
> -EXPORT_SYMBOL_GPL(pci_aer_clear_nonfatal_status);
>  
>  void pci_aer_clear_fatal_status(struct pci_dev *dev)
>  {
> diff --git a/include/linux/aer.h b/include/linux/aer.h
> index 154690c278cb..f638ad955deb 100644
> --- a/include/linux/aer.h
> +++ b/include/linux/aer.h
> @@ -44,7 +44,6 @@ struct aer_capability_regs {
>  /* PCIe port driver needs this function to enable AER */
>  int pci_enable_pcie_error_reporting(struct pci_dev *dev);
>  int pci_disable_pcie_error_reporting(struct pci_dev *dev);
> -int pci_aer_clear_nonfatal_status(struct pci_dev *dev);
>  int pci_aer_clear_uncorrect_error_status(struct pci_dev *dev);
>  void pci_save_aer_state(struct pci_dev *dev);
>  void pci_restore_aer_state(struct pci_dev *dev);
> @@ -57,10 +56,6 @@ static inline int pci_disable_pcie_error_reporting(struct pci_dev *dev)
>  {
>  	return -EINVAL;
>  }
> -static inline int pci_aer_clear_nonfatal_status(struct pci_dev *dev)
> -{
> -	return -EINVAL;
> -}
>  static inline int pci_aer_clear_uncorrect_error_status(struct pci_dev *dev)
>  {
>  	return -EINVAL;

-- 
Sathyanarayanan Kuppuswamy
Linux Kernel Developer