[PATCH] char/mwave: turn tp3780I_InitializeBoardData() into void function

[PATCH] char/mwave: turn tp3780I_InitializeBoardData() into void function

[Yang Li]

This function always return '0' and no callers use the return value.
So make it a void function.

This eliminates the following coccicheck warning:
./drivers/char/mwave/tp3780i.c:182:5-11: Unneeded variable: "retval".
Return "0" on line 187

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
---
 drivers/char/mwave/tp3780i.c | 6 +-----
 drivers/char/mwave/tp3780i.h | 2 +-
 2 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/char/mwave/tp3780i.c b/drivers/char/mwave/tp3780i.c
index 5e1618a..8588b51 100644
--- a/drivers/char/mwave/tp3780i.c
+++ b/drivers/char/mwave/tp3780i.c
@@ -177,14 +177,10 @@ int tp3780I_InitializeBoardData(THINKPAD_BD_DATA * pBDData)
 	return retval;
 }
 
-int tp3780I_Cleanup(THINKPAD_BD_DATA * pBDData)
+void tp3780I_Cleanup(THINKPAD_BD_DATA *pBDData)
 {
-	int retval = 0;
-
 	PRINTK_2(TRACE_TP3780I,
 		"tp3780i::tp3780I_Cleanup entry and exit pBDData %p\n", pBDData);
-
-	return retval;
 }
 
 int tp3780I_CalcResources(THINKPAD_BD_DATA * pBDData)
diff --git a/drivers/char/mwave/tp3780i.h b/drivers/char/mwave/tp3780i.h
index 07685b6..8bd976d 100644
--- a/drivers/char/mwave/tp3780i.h
+++ b/drivers/char/mwave/tp3780i.h
@@ -91,7 +91,7 @@
 int tp3780I_ResetDSP(THINKPAD_BD_DATA * pBDData);
 int tp3780I_StartDSP(THINKPAD_BD_DATA * pBDData);
 int tp3780I_QueryAbilities(THINKPAD_BD_DATA * pBDData, MW_ABILITIES * pAbilities);
-int tp3780I_Cleanup(THINKPAD_BD_DATA * pBDData);
+void tp3780I_Cleanup(THINKPAD_BD_DATA *pBDData);
 int tp3780I_ReadWriteDspDStore(THINKPAD_BD_DATA * pBDData, unsigned int uOpcode,
                                void __user *pvBuffer, unsigned int uCount,
                                unsigned long ulDSPAddr);
-- 
1.8.3.1

Re: [PATCH] char/mwave: turn tp3780I_InitializeBoardData() into void function

[Greg KH]

On Wed, Mar 10, 2021 at 04:46:03PM +0800, Yang Li wrote:
> This function always return '0' and no callers use the return value.
> So make it a void function.
> 
> This eliminates the following coccicheck warning:
> ./drivers/char/mwave/tp3780i.c:182:5-11: Unneeded variable: "retval".
> Return "0" on line 187
> 
> Reported-by: Abaci Robot <abaci@linux.alibaba.com>
> Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
> ---
>  drivers/char/mwave/tp3780i.c | 6 +-----
>  drivers/char/mwave/tp3780i.h | 2 +-
>  2 files changed, 2 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/char/mwave/tp3780i.c b/drivers/char/mwave/tp3780i.c
> index 5e1618a..8588b51 100644
> --- a/drivers/char/mwave/tp3780i.c
> +++ b/drivers/char/mwave/tp3780i.c
> @@ -177,14 +177,10 @@ int tp3780I_InitializeBoardData(THINKPAD_BD_DATA * pBDData)
>  	return retval;
>  }
>  
> -int tp3780I_Cleanup(THINKPAD_BD_DATA * pBDData)
> +void tp3780I_Cleanup(THINKPAD_BD_DATA *pBDData)

Your subject line does not match what the patch does :(