PCI: exynos: Remove unnecessary return statement

Message ID	002901cffe28$544504b0$fccf0e10$%han@samsung.com
State	Accepted
Headers	show Return-Path: <linux-pci-owner@vger.kernel.org> From: Jingoo Han <jg1.han@samsung.com> To: 'Bjorn Helgaas' <bhelgaas@google.com> Cc: linux-pci@vger.kernel.org, 'Jingoo Han' <jg1.han@samsung.com> Subject: [PATCH] PCI: exynos: Remove unnecessary return statement Date: Wed, 12 Nov 2014 12:25:38 +0900 Message-id: <002901cffe28$544504b0$fccf0e10$%han@samsung.com> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit Thread-index: Ac/+KFQwfcz0hmDQS+CrslgcZZUBjw== Content-language: ko DLP-Filter: Pass Sender: linux-pci-owner@vger.kernel.org Precedence: bulk

Message ID

002901cffe28$544504b0$fccf0e10$%han@samsung.com

State

Accepted

Headers

From: Jingoo Han <jg1.han@samsung.com>
To: 'Bjorn Helgaas' <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org, 'Jingoo Han' <jg1.han@samsung.com>
Subject: [PATCH] PCI: exynos: Remove unnecessary return statement
Date: Wed, 12 Nov 2014 12:25:38 +0900
Message-id: <002901cffe28$544504b0$fccf0e10$%han@samsung.com>
MIME-version: 1.0
Content-type: text/plain; charset=us-ascii
Content-transfer-encoding: 7bit
Thread-index: Ac/+KFQwfcz0hmDQS+CrslgcZZUBjw==
Content-language: ko
DLP-Filter: Pass
Sender: linux-pci-owner@vger.kernel.org
Precedence: bulk

This patch fixes the following checkpatch warning. WARNING: void function return statements are not generally useful Signed-off-by: Jingoo Han <jg1.han@samsung.com> --- drivers/pci/host/pci-exynos.c | 8 -------- 1 file changed, 8 deletions(-)

Comments

Srikanth Thokala Nov. 12, 2014, 4:29 p.m. UTC | #1

On Wed, Nov 12, 2014 at 8:55 AM, Jingoo Han <jg1.han@samsung.com> wrote:
> This patch fixes the following checkpatch warning.
>
>   WARNING: void function return statements are not generally useful
>
> Signed-off-by: Jingoo Han <jg1.han@samsung.com>
> ---
>  drivers/pci/host/pci-exynos.c |    8 --------
>  1 file changed, 8 deletions(-)
>

Acked-by: Srikanth Thokala <sriku.linux@gmail.com>

- Srikanth

> diff --git a/drivers/pci/host/pci-exynos.c b/drivers/pci/host/pci-exynos.c
> index c5d0ca3..41ab139 100644
> --- a/drivers/pci/host/pci-exynos.c
> +++ b/drivers/pci/host/pci-exynos.c
> @@ -312,7 +312,6 @@ static void exynos_pcie_assert_reset(struct pcie_port *pp)
>         if (exynos_pcie->reset_gpio >= 0)
>                 devm_gpio_request_one(pp->dev, exynos_pcie->reset_gpio,
>                                 GPIOF_OUT_INIT_HIGH, "RESET");
> -       return;
>  }
>
>  static int exynos_pcie_establish_link(struct pcie_port *pp)
> @@ -388,7 +387,6 @@ static void exynos_pcie_clear_irq_pulse(struct pcie_port *pp)
>
>         val = exynos_elb_readl(exynos_pcie, PCIE_IRQ_PULSE);
>         exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_PULSE);
> -       return;
>  }
>
>  static void exynos_pcie_enable_irq_pulse(struct pcie_port *pp)
> @@ -400,7 +398,6 @@ static void exynos_pcie_enable_irq_pulse(struct pcie_port *pp)
>         val = IRQ_INTA_ASSERT | IRQ_INTB_ASSERT |
>                 IRQ_INTC_ASSERT | IRQ_INTD_ASSERT,
>         exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_EN_PULSE);
> -       return;
>  }
>
>  static irqreturn_t exynos_pcie_irq_handler(int irq, void *arg)
> @@ -429,7 +426,6 @@ static void exynos_pcie_msi_init(struct pcie_port *pp)
>         val = exynos_elb_readl(exynos_pcie, PCIE_IRQ_EN_LEVEL);
>         val |= IRQ_MSI_ENABLE;
>         exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_EN_LEVEL);
> -       return;
>  }
>
>  static void exynos_pcie_enable_interrupts(struct pcie_port *pp)
> @@ -438,8 +434,6 @@ static void exynos_pcie_enable_interrupts(struct pcie_port *pp)
>
>         if (IS_ENABLED(CONFIG_PCI_MSI))
>                 exynos_pcie_msi_init(pp);
> -
> -       return;
>  }
>
>  static inline void exynos_pcie_readl_rc(struct pcie_port *pp,
> @@ -448,7 +442,6 @@ static inline void exynos_pcie_readl_rc(struct pcie_port *pp,
>         exynos_pcie_sideband_dbi_r_mode(pp, true);
>         *val = readl(dbi_base);
>         exynos_pcie_sideband_dbi_r_mode(pp, false);
> -       return;
>  }
>
>  static inline void exynos_pcie_writel_rc(struct pcie_port *pp,
> @@ -457,7 +450,6 @@ static inline void exynos_pcie_writel_rc(struct pcie_port *pp,
>         exynos_pcie_sideband_dbi_w_mode(pp, true);
>         writel(val, dbi_base);
>         exynos_pcie_sideband_dbi_w_mode(pp, false);
> -       return;
>  }
>
>  static int exynos_pcie_rd_own_conf(struct pcie_port *pp, int where, int size,
> --
> 1.7.9.5
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-pci" in
> the body of a message to majordomo@vger.kernel.org
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Jingoo Han Nov. 13, 2014, 2:09 a.m. UTC | #2

On Thursday, November 13, 2014 1:30 AM, Srikanth Thokala wrote:
> 
> On Wed, Nov 12, 2014 at 8:55 AM, Jingoo Han <jg1.han@samsung.com> wrote:
> > This patch fixes the following checkpatch warning.
> >
> >   WARNING: void function return statements are not generally useful
> >
> > Signed-off-by: Jingoo Han <jg1.han@samsung.com>
> > ---
> >  drivers/pci/host/pci-exynos.c |    8 --------
> >  1 file changed, 8 deletions(-)
> >
> 
> Acked-by: Srikanth Thokala <sriku.linux@gmail.com>

Sorry, but your 'Acked-by' is NOT appropriate.
You are neither a maintainer nor those who contributed the patch
for Exynos PCIe driver. So, in this case, 'Reviewed-by' looks good
as below.

Reviewed-by: Srikanth Thokala <sriku.linux@gmail.com>

By the way, you submitted the Xilinx PCIe driver
(drivers/pci/host/pcie-xilinx.c). Thus, if someone send
the patch for Xilinx PCIe driver, you can give your Acked-by.

According to the 'Documentation/SubmittingPatches' file,

"If a person was not directly involved in the preparation or handling of a
patch but wishes to signify and record their approval of it then they can
arrange to have an Acked-by: line added to the patch's changelog.

Acked-by: is often used by the maintainer of the affected code when that
maintainer neither contributed to nor forwarded the patch."

My comment will be also applied to the patch "[PATCH] PCI: imx6: Use tabs
for indentation".

Thank you.

Best regards,
Jingoo Han

> 
> - Srikanth
> 
> > diff --git a/drivers/pci/host/pci-exynos.c b/drivers/pci/host/pci-exynos.c
> > index c5d0ca3..41ab139 100644
> > --- a/drivers/pci/host/pci-exynos.c
> > +++ b/drivers/pci/host/pci-exynos.c
> > @@ -312,7 +312,6 @@ static void exynos_pcie_assert_reset(struct pcie_port *pp)
> >         if (exynos_pcie->reset_gpio >= 0)
> >                 devm_gpio_request_one(pp->dev, exynos_pcie->reset_gpio,
> >                                 GPIOF_OUT_INIT_HIGH, "RESET");
> > -       return;
> >  }
> >
> >  static int exynos_pcie_establish_link(struct pcie_port *pp)
> > @@ -388,7 +387,6 @@ static void exynos_pcie_clear_irq_pulse(struct pcie_port *pp)
> >
> >         val = exynos_elb_readl(exynos_pcie, PCIE_IRQ_PULSE);
> >         exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_PULSE);
> > -       return;
> >  }
> >
> >  static void exynos_pcie_enable_irq_pulse(struct pcie_port *pp)
> > @@ -400,7 +398,6 @@ static void exynos_pcie_enable_irq_pulse(struct pcie_port *pp)
> >         val = IRQ_INTA_ASSERT | IRQ_INTB_ASSERT |
> >                 IRQ_INTC_ASSERT | IRQ_INTD_ASSERT,
> >         exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_EN_PULSE);
> > -       return;
> >  }
> >
> >  static irqreturn_t exynos_pcie_irq_handler(int irq, void *arg)
> > @@ -429,7 +426,6 @@ static void exynos_pcie_msi_init(struct pcie_port *pp)
> >         val = exynos_elb_readl(exynos_pcie, PCIE_IRQ_EN_LEVEL);
> >         val |= IRQ_MSI_ENABLE;
> >         exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_EN_LEVEL);
> > -       return;
> >  }
> >
> >  static void exynos_pcie_enable_interrupts(struct pcie_port *pp)
> > @@ -438,8 +434,6 @@ static void exynos_pcie_enable_interrupts(struct pcie_port *pp)
> >
> >         if (IS_ENABLED(CONFIG_PCI_MSI))
> >                 exynos_pcie_msi_init(pp);
> > -
> > -       return;
> >  }
> >
> >  static inline void exynos_pcie_readl_rc(struct pcie_port *pp,
> > @@ -448,7 +442,6 @@ static inline void exynos_pcie_readl_rc(struct pcie_port *pp,
> >         exynos_pcie_sideband_dbi_r_mode(pp, true);
> >         *val = readl(dbi_base);
> >         exynos_pcie_sideband_dbi_r_mode(pp, false);
> > -       return;
> >  }
> >
> >  static inline void exynos_pcie_writel_rc(struct pcie_port *pp,
> > @@ -457,7 +450,6 @@ static inline void exynos_pcie_writel_rc(struct pcie_port *pp,
> >         exynos_pcie_sideband_dbi_w_mode(pp, true);
> >         writel(val, dbi_base);
> >         exynos_pcie_sideband_dbi_w_mode(pp, false);
> > -       return;
> >  }
> >
> >  static int exynos_pcie_rd_own_conf(struct pcie_port *pp, int where, int size,
> > --
> > 1.7.9.5
> >
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-pci" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html

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Srikanth Thokala Nov. 13, 2014, 3:49 a.m. UTC | #3

On Thu, Nov 13, 2014 at 7:39 AM, Jingoo Han <jg1.han@samsung.com> wrote:
> On Thursday, November 13, 2014 1:30 AM, Srikanth Thokala wrote:
>>
>> On Wed, Nov 12, 2014 at 8:55 AM, Jingoo Han <jg1.han@samsung.com> wrote:
>> > This patch fixes the following checkpatch warning.
>> >
>> >   WARNING: void function return statements are not generally useful
>> >
>> > Signed-off-by: Jingoo Han <jg1.han@samsung.com>
>> > ---
>> >  drivers/pci/host/pci-exynos.c |    8 --------
>> >  1 file changed, 8 deletions(-)
>> >
>>
>> Acked-by: Srikanth Thokala <sriku.linux@gmail.com>
>
> Sorry, but your 'Acked-by' is NOT appropriate.
> You are neither a maintainer nor those who contributed the patch
> for Exynos PCIe driver. So, in this case, 'Reviewed-by' looks good
> as below.
>
> Reviewed-by: Srikanth Thokala <sriku.linux@gmail.com>
>
> By the way, you submitted the Xilinx PCIe driver
> (drivers/pci/host/pcie-xilinx.c). Thus, if someone send
> the patch for Xilinx PCIe driver, you can give your Acked-by.
>
> According to the 'Documentation/SubmittingPatches' file,
>
> "If a person was not directly involved in the preparation or handling of a
> patch but wishes to signify and record their approval of it then they can
> arrange to have an Acked-by: line added to the patch's changelog.
>
> Acked-by: is often used by the maintainer of the affected code when that
> maintainer neither contributed to nor forwarded the patch."
>
> My comment will be also applied to the patch "[PATCH] PCI: imx6: Use tabs
> for indentation".

Thank you for the information, I will keep that in mind.

- Srikanth

>
> Thank you.
>
> Best regards,
> Jingoo Han
>
>>
>> - Srikanth
>>
>> > diff --git a/drivers/pci/host/pci-exynos.c b/drivers/pci/host/pci-exynos.c
>> > index c5d0ca3..41ab139 100644
>> > --- a/drivers/pci/host/pci-exynos.c
>> > +++ b/drivers/pci/host/pci-exynos.c
>> > @@ -312,7 +312,6 @@ static void exynos_pcie_assert_reset(struct pcie_port *pp)
>> >         if (exynos_pcie->reset_gpio >= 0)
>> >                 devm_gpio_request_one(pp->dev, exynos_pcie->reset_gpio,
>> >                                 GPIOF_OUT_INIT_HIGH, "RESET");
>> > -       return;
>> >  }
>> >
>> >  static int exynos_pcie_establish_link(struct pcie_port *pp)
>> > @@ -388,7 +387,6 @@ static void exynos_pcie_clear_irq_pulse(struct pcie_port *pp)
>> >
>> >         val = exynos_elb_readl(exynos_pcie, PCIE_IRQ_PULSE);
>> >         exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_PULSE);
>> > -       return;
>> >  }
>> >
>> >  static void exynos_pcie_enable_irq_pulse(struct pcie_port *pp)
>> > @@ -400,7 +398,6 @@ static void exynos_pcie_enable_irq_pulse(struct pcie_port *pp)
>> >         val = IRQ_INTA_ASSERT | IRQ_INTB_ASSERT |
>> >                 IRQ_INTC_ASSERT | IRQ_INTD_ASSERT,
>> >         exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_EN_PULSE);
>> > -       return;
>> >  }
>> >
>> >  static irqreturn_t exynos_pcie_irq_handler(int irq, void *arg)
>> > @@ -429,7 +426,6 @@ static void exynos_pcie_msi_init(struct pcie_port *pp)
>> >         val = exynos_elb_readl(exynos_pcie, PCIE_IRQ_EN_LEVEL);
>> >         val |= IRQ_MSI_ENABLE;
>> >         exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_EN_LEVEL);
>> > -       return;
>> >  }
>> >
>> >  static void exynos_pcie_enable_interrupts(struct pcie_port *pp)
>> > @@ -438,8 +434,6 @@ static void exynos_pcie_enable_interrupts(struct pcie_port *pp)
>> >
>> >         if (IS_ENABLED(CONFIG_PCI_MSI))
>> >                 exynos_pcie_msi_init(pp);
>> > -
>> > -       return;
>> >  }
>> >
>> >  static inline void exynos_pcie_readl_rc(struct pcie_port *pp,
>> > @@ -448,7 +442,6 @@ static inline void exynos_pcie_readl_rc(struct pcie_port *pp,
>> >         exynos_pcie_sideband_dbi_r_mode(pp, true);
>> >         *val = readl(dbi_base);
>> >         exynos_pcie_sideband_dbi_r_mode(pp, false);
>> > -       return;
>> >  }
>> >
>> >  static inline void exynos_pcie_writel_rc(struct pcie_port *pp,
>> > @@ -457,7 +450,6 @@ static inline void exynos_pcie_writel_rc(struct pcie_port *pp,
>> >         exynos_pcie_sideband_dbi_w_mode(pp, true);
>> >         writel(val, dbi_base);
>> >         exynos_pcie_sideband_dbi_w_mode(pp, false);
>> > -       return;
>> >  }
>> >
>> >  static int exynos_pcie_rd_own_conf(struct pcie_port *pp, int where, int size,
>> > --
>> > 1.7.9.5
>> >
>> >
>> > --
>> > To unsubscribe from this list: send the line "unsubscribe linux-pci" in
>> > the body of a message to majordomo@vger.kernel.org
>> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
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Bjorn Helgaas Nov. 13, 2014, 5:51 p.m. UTC | #4

On Wed, Nov 12, 2014 at 12:25:38PM +0900, Jingoo Han wrote:
> This patch fixes the following checkpatch warning.
> 
>   WARNING: void function return statements are not generally useful
> 
> Signed-off-by: Jingoo Han <jg1.han@samsung.com>

Applied to pci/host-exynos for v3.19, thanks!

> ---
>  drivers/pci/host/pci-exynos.c |    8 --------
>  1 file changed, 8 deletions(-)
> 
> diff --git a/drivers/pci/host/pci-exynos.c b/drivers/pci/host/pci-exynos.c
> index c5d0ca3..41ab139 100644
> --- a/drivers/pci/host/pci-exynos.c
> +++ b/drivers/pci/host/pci-exynos.c
> @@ -312,7 +312,6 @@ static void exynos_pcie_assert_reset(struct pcie_port *pp)
>  	if (exynos_pcie->reset_gpio >= 0)
>  		devm_gpio_request_one(pp->dev, exynos_pcie->reset_gpio,
>  				GPIOF_OUT_INIT_HIGH, "RESET");
> -	return;
>  }
>  
>  static int exynos_pcie_establish_link(struct pcie_port *pp)
> @@ -388,7 +387,6 @@ static void exynos_pcie_clear_irq_pulse(struct pcie_port *pp)
>  
>  	val = exynos_elb_readl(exynos_pcie, PCIE_IRQ_PULSE);
>  	exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_PULSE);
> -	return;
>  }
>  
>  static void exynos_pcie_enable_irq_pulse(struct pcie_port *pp)
> @@ -400,7 +398,6 @@ static void exynos_pcie_enable_irq_pulse(struct pcie_port *pp)
>  	val = IRQ_INTA_ASSERT | IRQ_INTB_ASSERT |
>  		IRQ_INTC_ASSERT | IRQ_INTD_ASSERT,
>  	exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_EN_PULSE);
> -	return;
>  }
>  
>  static irqreturn_t exynos_pcie_irq_handler(int irq, void *arg)
> @@ -429,7 +426,6 @@ static void exynos_pcie_msi_init(struct pcie_port *pp)
>  	val = exynos_elb_readl(exynos_pcie, PCIE_IRQ_EN_LEVEL);
>  	val |= IRQ_MSI_ENABLE;
>  	exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_EN_LEVEL);
> -	return;
>  }
>  
>  static void exynos_pcie_enable_interrupts(struct pcie_port *pp)
> @@ -438,8 +434,6 @@ static void exynos_pcie_enable_interrupts(struct pcie_port *pp)
>  
>  	if (IS_ENABLED(CONFIG_PCI_MSI))
>  		exynos_pcie_msi_init(pp);
> -
> -	return;
>  }
>  
>  static inline void exynos_pcie_readl_rc(struct pcie_port *pp,
> @@ -448,7 +442,6 @@ static inline void exynos_pcie_readl_rc(struct pcie_port *pp,
>  	exynos_pcie_sideband_dbi_r_mode(pp, true);
>  	*val = readl(dbi_base);
>  	exynos_pcie_sideband_dbi_r_mode(pp, false);
> -	return;
>  }
>  
>  static inline void exynos_pcie_writel_rc(struct pcie_port *pp,
> @@ -457,7 +450,6 @@ static inline void exynos_pcie_writel_rc(struct pcie_port *pp,
>  	exynos_pcie_sideband_dbi_w_mode(pp, true);
>  	writel(val, dbi_base);
>  	exynos_pcie_sideband_dbi_w_mode(pp, false);
> -	return;
>  }
>  
>  static int exynos_pcie_rd_own_conf(struct pcie_port *pp, int where, int size,
> -- 
> 1.7.9.5
> 
> 
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diff --git a/drivers/pci/host/pci-exynos.c b/drivers/pci/host/pci-exynos.c
index c5d0ca3..41ab139 100644
--- a/drivers/pci/host/pci-exynos.c
+++ b/drivers/pci/host/pci-exynos.c
@@ -312,7 +312,6 @@  static void exynos_pcie_assert_reset(struct pcie_port *pp)
 	if (exynos_pcie->reset_gpio >= 0)
 		devm_gpio_request_one(pp->dev, exynos_pcie->reset_gpio,
 				GPIOF_OUT_INIT_HIGH, "RESET");
-	return;
 }
 
 static int exynos_pcie_establish_link(struct pcie_port *pp)
@@ -388,7 +387,6 @@  static void exynos_pcie_clear_irq_pulse(struct pcie_port *pp)
 
 	val = exynos_elb_readl(exynos_pcie, PCIE_IRQ_PULSE);
 	exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_PULSE);
-	return;
 }
 
 static void exynos_pcie_enable_irq_pulse(struct pcie_port *pp)
@@ -400,7 +398,6 @@  static void exynos_pcie_enable_irq_pulse(struct pcie_port *pp)
 	val = IRQ_INTA_ASSERT | IRQ_INTB_ASSERT |
 		IRQ_INTC_ASSERT | IRQ_INTD_ASSERT,
 	exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_EN_PULSE);
-	return;
 }
 
 static irqreturn_t exynos_pcie_irq_handler(int irq, void *arg)
@@ -429,7 +426,6 @@  static void exynos_pcie_msi_init(struct pcie_port *pp)
 	val = exynos_elb_readl(exynos_pcie, PCIE_IRQ_EN_LEVEL);
 	val |= IRQ_MSI_ENABLE;
 	exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_EN_LEVEL);
-	return;
 }
 
 static void exynos_pcie_enable_interrupts(struct pcie_port *pp)
@@ -438,8 +434,6 @@  static void exynos_pcie_enable_interrupts(struct pcie_port *pp)
 
 	if (IS_ENABLED(CONFIG_PCI_MSI))
 		exynos_pcie_msi_init(pp);
-
-	return;
 }
 
 static inline void exynos_pcie_readl_rc(struct pcie_port *pp,
@@ -448,7 +442,6 @@  static inline void exynos_pcie_readl_rc(struct pcie_port *pp,
 	exynos_pcie_sideband_dbi_r_mode(pp, true);
 	*val = readl(dbi_base);
 	exynos_pcie_sideband_dbi_r_mode(pp, false);
-	return;
 }
 
 static inline void exynos_pcie_writel_rc(struct pcie_port *pp,
@@ -457,7 +450,6 @@  static inline void exynos_pcie_writel_rc(struct pcie_port *pp,
 	exynos_pcie_sideband_dbi_w_mode(pp, true);
 	writel(val, dbi_base);
 	exynos_pcie_sideband_dbi_w_mode(pp, false);
-	return;
 }
 
 static int exynos_pcie_rd_own_conf(struct pcie_port *pp, int where, int size,

PCI: exynos: Remove unnecessary return statement

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