netdev - Re: [PATCH iwl-next v1 1/2] igb: simplify pci ops declaration

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Date: Mon, 19 Feb 2024 09:15:42 +0000
From: Simon Horman <horms@...nel.org>
To: Jesse Brandeburg <jesse.brandeburg@...el.com>
Cc: intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
	Alan Brady <alan.brady@...el.com>,
	Tony Nguyen <anthony.l.nguyen@...el.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Subject: Re: [PATCH iwl-next v1 1/2] igb: simplify pci ops declaration

On Sat, Feb 10, 2024 at 02:01:08PM -0800, Jesse Brandeburg wrote:
> The igb driver was pre-declaring tons of functions just so that it could
> have an early declaration of the pci_driver struct.
> 
> Delete a bunch of the declarations and move the struct to the bottom of the
> file, after all the functions are declared.
> 
> Reviewed-by: Alan Brady <alan.brady@...el.com>
> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@...el.com>

...

> @@ -219,19 +203,6 @@ static const struct pci_error_handlers igb_err_handler = {
>  
>  static void igb_init_dmac(struct igb_adapter *adapter, u32 pba);
>  
> -static struct pci_driver igb_driver = {
> -	.name     = igb_driver_name,
> -	.id_table = igb_pci_tbl,
> -	.probe    = igb_probe,
> -	.remove   = igb_remove,
> -#ifdef CONFIG_PM
> -	.driver.pm = &igb_pm_ops,
> -#endif
> -	.shutdown = igb_shutdown,
> -	.sriov_configure = igb_pci_sriov_configure,
> -	.err_handler = &igb_err_handler
> -};
> -
>  MODULE_AUTHOR("Intel Corporation, <e1000-devel@...ts.sourceforge.net>");
>  MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver");
>  MODULE_LICENSE("GPL v2");

...

> @@ -10169,4 +10142,24 @@ static void igb_nfc_filter_restore(struct igb_adapter *adapter)
>  
>  	spin_unlock(&adapter->nfc_lock);
>  }
> +
> +#ifdef CONFIG_PM
> +static const struct dev_pm_ops igb_pm_ops = {
> +	SET_SYSTEM_SLEEP_PM_OPS(igb_suspend, igb_resume)
> +	SET_RUNTIME_PM_OPS(igb_runtime_suspend, igb_runtime_resume,
> +			igb_runtime_idle)
> +};
> +#endif
> +
> +static struct pci_driver igb_driver = {
> +	.name     = igb_driver_name,
> +	.id_table = igb_pci_tbl,
> +	.probe    = igb_probe,
> +	.remove   = igb_remove,
> +	.driver.pm = &igb_pm_ops,

Hi Jesse,

the line above causes a build failure if CONFIG_PM is not set.

> +	.shutdown = igb_shutdown,
> +	.sriov_configure = igb_pci_sriov_configure,
> +	.err_handler = &igb_err_handler
> +};
> +
>  /* igb_main.c */

...