Re: [PATCH V2] PCI: cpci: remove unused fields

[Bjorn Helgaas <helgaas@kernel.org>]

On Mon, Feb 17, 2025 at 03:56:38PM -0300, Guilherme Giacomo Simoes wrote:
> The `get_power()` and `set_power()` function pointers in the
> `cpci_hp_controller ops` struct were declared but never implemented by
> any driver. To improve code readability and reduce resource usage,
> remove this pointers.
> 
> Signed-off-by: Guilherme Giacomo Simoes <trintaeoitogc@gmail.com>

Applied to pci/hotplug for v6.15, thanks!

> --- 
> v2 changes
> 
> - Remove uneccessary SLOT_ENABLE constant
> - Remove uneccessary flags fields
> ---
>  drivers/pci/hotplug/cpci_hotplug.h      |  2 --
>  drivers/pci/hotplug/cpci_hotplug_core.c | 17 ++---------------
>  2 files changed, 2 insertions(+), 17 deletions(-)
> 
> diff --git a/drivers/pci/hotplug/cpci_hotplug.h b/drivers/pci/hotplug/cpci_hotplug.h
> index 03fa39ab0c88..a31d6b62f523 100644
> --- a/drivers/pci/hotplug/cpci_hotplug.h
> +++ b/drivers/pci/hotplug/cpci_hotplug.h
> @@ -44,8 +44,6 @@ struct cpci_hp_controller_ops {
>  	int (*enable_irq)(void);
>  	int (*disable_irq)(void);
>  	int (*check_irq)(void *dev_id);
> -	u8  (*get_power)(struct slot *slot);
> -	int (*set_power)(struct slot *slot, int value);
>  };
>  
>  struct cpci_hp_controller {
> diff --git a/drivers/pci/hotplug/cpci_hotplug_core.c b/drivers/pci/hotplug/cpci_hotplug_core.c
> index d0559d2faf50..dd93e53ea7c2 100644
> --- a/drivers/pci/hotplug/cpci_hotplug_core.c
> +++ b/drivers/pci/hotplug/cpci_hotplug_core.c
> @@ -71,13 +71,10 @@ static int
>  enable_slot(struct hotplug_slot *hotplug_slot)
>  {
>  	struct slot *slot = to_slot(hotplug_slot);
> -	int retval = 0;
>  
>  	dbg("%s - physical_slot = %s", __func__, slot_name(slot));
>  
> -	if (controller->ops->set_power)
> -		retval = controller->ops->set_power(slot, 1);
> -	return retval;
> +	return 0;
>  }
>  
>  static int
> @@ -109,12 +106,6 @@ disable_slot(struct hotplug_slot *hotplug_slot)
>  	}
>  	cpci_led_on(slot);
>  
> -	if (controller->ops->set_power) {
> -		retval = controller->ops->set_power(slot, 0);
> -		if (retval)
> -			goto disable_error;
> -	}
> -
>  	slot->adapter_status = 0;
>  
>  	if (slot->extracting) {
> @@ -129,11 +120,7 @@ disable_slot(struct hotplug_slot *hotplug_slot)
>  static u8
>  cpci_get_power_status(struct slot *slot)
>  {
> -	u8 power = 1;
> -
> -	if (controller->ops->get_power)
> -		power = controller->ops->get_power(slot);
> -	return power;
> +	return 1;
>  }
>  
>  static int
> -- 
> 2.34.1
>