[PATCH] staging: comedi: drivers: addi_apci_3501: Removed variables that is never used

[PATCH] staging: comedi: drivers: addi_apci_3501: Removed variables that is never used

[Rickard Strandqvist]

Variable ar assigned a value that is never used.
I have also removed all the code that thereby serves no purpose.

This was found using a static code analysis program called cppcheck

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
---
 drivers/staging/comedi/drivers/addi_apci_3501.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/comedi/drivers/addi_apci_3501.c b/drivers/staging/comedi/drivers/addi_apci_3501.c
index a726efc..0cdcecc 100644
--- a/drivers/staging/comedi/drivers/addi_apci_3501.c
+++ b/drivers/staging/comedi/drivers/addi_apci_3501.c
@@ -267,7 +267,6 @@ static irqreturn_t apci3501_interrupt(int irq, void *d)
 	struct apci3501_private *devpriv = dev->private;
 	unsigned int ui_Timer_AOWatchdog;
 	unsigned long ul_Command1;
-	int i_temp;
 
 	/*  Disable Interrupt */
 	ul_Command1 = inl(dev->iobase + APCI3501_TIMER_CTRL_REG);
@@ -285,7 +284,7 @@ static irqreturn_t apci3501_interrupt(int irq, void *d)
 	ul_Command1 = inl(dev->iobase + APCI3501_TIMER_CTRL_REG);
 	ul_Command1 = ((ul_Command1 & 0xFFFFF9FDul) | 1 << 1);
 	outl(ul_Command1, dev->iobase + APCI3501_TIMER_CTRL_REG);
-	i_temp = inl(dev->iobase + APCI3501_TIMER_STATUS_REG) & 0x1;
+	inl(dev->iobase + APCI3501_TIMER_STATUS_REG) & 0x1;
 
 	return IRQ_HANDLED;
 }
-- 
1.7.10.4

Re: [PATCH] staging: comedi: drivers: addi_apci_3501: Removed variables that is never used

[Ian Abbott]

On 28/01/15 22:33, Rickard Strandqvist wrote:
> Variable ar assigned a value that is never used.
> I have also removed all the code that thereby serves no purpose.
>
> This was found using a static code analysis program called cppcheck
>
> Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
> ---
>   drivers/staging/comedi/drivers/addi_apci_3501.c |    3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/staging/comedi/drivers/addi_apci_3501.c b/drivers/staging/comedi/drivers/addi_apci_3501.c
> index a726efc..0cdcecc 100644
> --- a/drivers/staging/comedi/drivers/addi_apci_3501.c
> +++ b/drivers/staging/comedi/drivers/addi_apci_3501.c
> @@ -267,7 +267,6 @@ static irqreturn_t apci3501_interrupt(int irq, void *d)
>   	struct apci3501_private *devpriv = dev->private;
>   	unsigned int ui_Timer_AOWatchdog;
>   	unsigned long ul_Command1;
> -	int i_temp;
>
>   	/*  Disable Interrupt */
>   	ul_Command1 = inl(dev->iobase + APCI3501_TIMER_CTRL_REG);
> @@ -285,7 +284,7 @@ static irqreturn_t apci3501_interrupt(int irq, void *d)
>   	ul_Command1 = inl(dev->iobase + APCI3501_TIMER_CTRL_REG);
>   	ul_Command1 = ((ul_Command1 & 0xFFFFF9FDul) | 1 << 1);
>   	outl(ul_Command1, dev->iobase + APCI3501_TIMER_CTRL_REG);
> -	i_temp = inl(dev->iobase + APCI3501_TIMER_STATUS_REG) & 0x1;
> +	inl(dev->iobase + APCI3501_TIMER_STATUS_REG) & 0x1;

Same as for hwdrv_apci3501.c, the ' & 0x1' part should be removed to 
avoid compiler warnings.

Keep the inl() call as it might have side-effects for the watchdog 
functionality of the board.

>
>   	return IRQ_HANDLED;
>   }
>


-- 
-=( Ian Abbott @ MEV Ltd.    E-mail: <abbotti@mev.co.uk> )=-
-=(                          Web: http://www.mev.co.uk/  )=-