linux-kernel - Re: [PATCH v4 2/5] PCI/ERR: Rename error reporting to generic pci naming

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Date:   Tue, 16 Jan 2018 19:16:24 -0600
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Oza Pawandeep <poza@...eaurora.org>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        Dongdong Liu <liudongdong3@...wei.com>,
        Keith Busch <keith.busch@...el.com>, Wei Zhang <wzhang@...com>,
        Sinan Kaya <okaya@...eaurora.org>,
        Timur Tabi <timur@...eaurora.org>
Subject: Re: [PATCH v4 2/5] PCI/ERR: Rename error reporting to generic pci
 naming

On Tue, Jan 16, 2018 at 03:28:40PM +0530, Oza Pawandeep wrote:
> This patch renames error reporting to generic function with pci prefix
> 
> Signed-off-by: Oza Pawandeep <poza@...eaurora.org>
> 
> diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c
> index 4fda843..5ed9575 100644
> --- a/drivers/pci/pcie/aer/aerdrv_core.c
> +++ b/drivers/pci/pcie/aer/aerdrv_core.c
> @@ -285,7 +285,7 @@ static void handle_error_source(struct pcie_device *aerdev,
>  			pci_write_config_dword(dev, pos + PCI_ERR_COR_STATUS,
>  					info->status);
>  	} else
> -		do_recovery(dev, info->severity);
> +		pci_do_recovery(dev, info->severity);
>  }
>  
>  #ifdef CONFIG_ACPI_APEI_PCIEAER
> @@ -349,7 +349,7 @@ static void aer_recover_work_func(struct work_struct *work)
>  			continue;
>  		}
>  		cper_print_aer(pdev, entry.severity, entry.regs);
> -		do_recovery(pdev, entry.severity);
> +		pci_do_recovery(pdev, entry.severity);
>  		pci_dev_put(pdev);
>  	}
>  }
> diff --git a/drivers/pci/pcie/pcie-err.c b/drivers/pci/pcie/pcie-err.c
> index 76e66bb..5792a9f 100644
> --- a/drivers/pci/pcie/pcie-err.c
> +++ b/drivers/pci/pcie/pcie-err.c
> @@ -20,12 +20,12 @@
>  #include <linux/pcieport_if.h>
>  #include "portdrv.h"
>  
> -struct aer_broadcast_data {
> +struct pci_err_broadcast_data {
>  	enum pci_channel_state state;
>  	enum pci_ers_result result;
>  };
>  
> -pci_ers_result_t merge_result(enum pci_ers_result orig,
> +pci_ers_result_t pci_merge_result(enum pci_ers_result orig,

Most of these functions started out static in aerdrv_core.c and should
remain static.  Therefore, they do not need to be renamed.  Same for
the struct aer_broadcast_data.

> diff --git a/include/linux/pci.h b/include/linux/pci.h
> index 46fd243..babcd89 100644
> --- a/include/linux/pci.h
> +++ b/include/linux/pci.h
> @@ -1998,7 +1998,7 @@ static inline resource_size_t pci_iov_resource_size(struct pci_dev *dev, int res
>  void pci_hp_remove_module_link(struct pci_slot *pci_slot);
>  #endif
>  
> -void do_recovery(struct pci_dev *dev, int severity);
> +void pci_do_recovery(struct pci_dev *dev, int severity);

This one started out static and now needs to be non-static so you can
call it both from aerdrv_core.c and pcie-dpc.c.

But it should not be exposed outside the PCI core, so the declaration
should go in drivers/pci/pcie/aer/aerdrv.h or at most
drivers/pci/pci.h.

The rename should happen before the move out of aerdrv_core.c, i.e.,
reorder patches 1 and 2.

>  /**
>   * pci_pcie_cap - get the saved PCIe capability offset
> -- 
> Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.,
> a Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.
>