linux-kernel - Re: [PATCH] PCI: hotplug: Remove surplus return from a void function

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Date:   Wed, 28 Aug 2019 17:11:59 -0700
From:   Tyrel Datwyler <tyreld@...ux.ibm.com>
To:     Krzysztof Wilczynski <kw@...ux.com>,
        Scott Murray <scott@...teful.org>
Cc:     Bjorn Helgaas <helgaas@...nel.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Lukas Wunner <lukas@...ner.de>,
        YueHaibing <yuehaibing@...wei.com>,
        Sebastian Ott <sebott@...ux.ibm.com>,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH] PCI: hotplug: Remove surplus return from a void function

On 8/26/19 2:51 AM, Krzysztof Wilczynski wrote:
> Remove unnecessary empty return statement at the end of a void
> function in the following:
> 
>   - drivers/pci/hotplug/cpci_hotplug_core.c: cleanup_slots()
>   - drivers/pci/hotplug/cpqphp_core.c: pci_print_IRQ_route()
>   - drivers/pci/hotplug/cpqphp_ctrl.c: cpqhp_pushbutton_thread()
>   - drivers/pci/hotplug/cpqphp_ctrl.c: interrupt_event_handler()
>   - drivers/pci/hotplug/cpqphp_nvram.h: compaq_nvram_init()
>   - drivers/pci/hotplug/rpadlpar_core.c: rpadlpar_io_init()
>   - drivers/pci/hotplug/rpaphp_core.c: cleanup_slots()
> 
> Signed-off-by: Krzysztof Wilczynski <kw@...ux.com>

For rpa*_core.c portions,

Acked-by: Tyrel Datwyler <tyreld@...ux.ibm.com>

> ---
>  drivers/pci/hotplug/cpci_hotplug_core.c | 1 -
>  drivers/pci/hotplug/cpqphp_core.c       | 1 -
>  drivers/pci/hotplug/cpqphp_ctrl.c       | 4 ----
>  drivers/pci/hotplug/cpqphp_nvram.h      | 5 +----
>  drivers/pci/hotplug/rpadlpar_core.c     | 1 -
>  drivers/pci/hotplug/rpaphp_core.c       | 1 -
>  6 files changed, 1 insertion(+), 12 deletions(-)
> 
> diff --git a/drivers/pci/hotplug/cpci_hotplug_core.c b/drivers/pci/hotplug/cpci_hotplug_core.c
> index 603eadf3d965..d0559d2faf50 100644
> --- a/drivers/pci/hotplug/cpci_hotplug_core.c
> +++ b/drivers/pci/hotplug/cpci_hotplug_core.c
> @@ -563,7 +563,6 @@ cleanup_slots(void)
>  	}
>  cleanup_null:
>  	up_write(&list_rwsem);
> -	return;
>  }
>  
>  int
> diff --git a/drivers/pci/hotplug/cpqphp_core.c b/drivers/pci/hotplug/cpqphp_core.c
> index 16bbb183695a..b8aacb41a83c 100644
> --- a/drivers/pci/hotplug/cpqphp_core.c
> +++ b/drivers/pci/hotplug/cpqphp_core.c
> @@ -173,7 +173,6 @@ static void pci_print_IRQ_route(void)
>  		dbg("%d %d %d %d\n", tbus, tdevice >> 3, tdevice & 0x7, tslot);
>  
>  	}
> -	return;
>  }
>  
>  
> diff --git a/drivers/pci/hotplug/cpqphp_ctrl.c b/drivers/pci/hotplug/cpqphp_ctrl.c
> index b7f4e1f099d9..68de958a9be8 100644
> --- a/drivers/pci/hotplug/cpqphp_ctrl.c
> +++ b/drivers/pci/hotplug/cpqphp_ctrl.c
> @@ -1872,8 +1872,6 @@ static void interrupt_event_handler(struct controller *ctrl)
>  			}
>  		}		/* End of FOR loop */
>  	}
> -
> -	return;
>  }
>  
>  
> @@ -1943,8 +1941,6 @@ void cpqhp_pushbutton_thread(struct timer_list *t)
>  
>  		p_slot->state = STATIC_STATE;
>  	}
> -
> -	return;
>  }
>  
>  
> diff --git a/drivers/pci/hotplug/cpqphp_nvram.h b/drivers/pci/hotplug/cpqphp_nvram.h
> index 918ff8dbfe62..70e879b6a23f 100644
> --- a/drivers/pci/hotplug/cpqphp_nvram.h
> +++ b/drivers/pci/hotplug/cpqphp_nvram.h
> @@ -16,10 +16,7 @@
>  
>  #ifndef CONFIG_HOTPLUG_PCI_COMPAQ_NVRAM
>  
> -static inline void compaq_nvram_init(void __iomem *rom_start)
> -{
> -	return;
> -}
> +static inline void compaq_nvram_init(void __iomem *rom_start) { }
>  
>  static inline int compaq_nvram_load(void __iomem *rom_start, struct controller *ctrl)
>  {
> diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c
> index 182f9e3443ee..977946e4e613 100644
> --- a/drivers/pci/hotplug/rpadlpar_core.c
> +++ b/drivers/pci/hotplug/rpadlpar_core.c
> @@ -473,7 +473,6 @@ int __init rpadlpar_io_init(void)
>  void rpadlpar_io_exit(void)
>  {
>  	dlpar_sysfs_exit();
> -	return;
>  }
>  
>  module_init(rpadlpar_io_init);
> diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c
> index c3899ee1db99..18627bb21e9e 100644
> --- a/drivers/pci/hotplug/rpaphp_core.c
> +++ b/drivers/pci/hotplug/rpaphp_core.c
> @@ -408,7 +408,6 @@ static void __exit cleanup_slots(void)
>  		pci_hp_deregister(&slot->hotplug_slot);
>  		dealloc_slot_struct(slot);
>  	}
> -	return;
>  }
>  
>  static int __init rpaphp_init(void)
>