linux-kernel - Re: [PATCH V2 02/16] PCI/PME: Export pcie_pme_disable

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Date:   Thu, 11 Apr 2019 12:16:57 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Vidya Sagar <vidyas@...dia.com>
Cc:     bhelgaas@...gle.com, robh+dt@...nel.org, mark.rutland@....com,
        jonathanh@...dia.com, kishon@...com, catalin.marinas@....com,
        will.deacon@....com, lorenzo.pieralisi@....com,
        jingoohan1@...il.com, gustavo.pimentel@...opsys.com,
        mperttunen@...dia.com, linux-pci@...r.kernel.org,
        devicetree@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kthota@...dia.com, mmaddireddy@...dia.com, sagar.tv@...il.com
Subject: Re: [PATCH V2 02/16] PCI/PME: Export pcie_pme_disable_msi() API

On Fri, Apr 05, 2019 at 01:24:29AM +0530, Vidya Sagar wrote:
> Export pcie_pme_disable_msi() API to enable drivers using this API be able to
> build as loadable modules
> 
> Signed-off-by: Vidya Sagar <vidyas@...dia.com>
> ---
> Changes from [v1]:
> * This is a new patch in v2 series
> 
>  drivers/pci/pcie/pme.c     | 6 ++++++
>  drivers/pci/pcie/portdrv.h | 5 +----
>  2 files changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/pci/pcie/pme.c b/drivers/pci/pcie/pme.c
> index 54d593d10396..18e815c1e3c9 100644
> --- a/drivers/pci/pcie/pme.c
> +++ b/drivers/pci/pcie/pme.c
> @@ -27,6 +27,12 @@
>   */
>  bool pcie_pme_msi_disabled;
>  
> +void pcie_pme_disable_msi(void)
> +{
> +	pcie_pme_msi_disabled = true;
> +}
> +EXPORT_SYMBOL_GPL(pcie_pme_disable_msi);
> +
>  static int __init pcie_pme_setup(char *str)
>  {
>  	if (!strncmp(str, "nomsi", 5))
> diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h
> index 1d50dc58ac40..2be7b7e9a784 100644
> --- a/drivers/pci/pcie/portdrv.h
> +++ b/drivers/pci/pcie/portdrv.h
> @@ -127,10 +127,7 @@ struct pci_dev;
>  #ifdef CONFIG_PCIE_PME
>  extern bool pcie_pme_msi_disabled;
>  
> -static inline void pcie_pme_disable_msi(void)
> -{
> -	pcie_pme_msi_disabled = true;
> -}
> +void pcie_pme_disable_msi(void);
>  
>  static inline bool pcie_pme_no_msi(void)
>  {

Perhaps also export pcie_pme_no_msi()? That way you could get rid of the
extern declaration of the pcie_pme_msi_disabled variable and make it
static to drivers/pci/pcie/pme.c?

Thierry

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