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[PATCH 1/2 v2] staging: dgnc: remove redundant NULL check for brd

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  [PATCH 1/2 v2] staging: dgnc: remove redundant NULL check for brd Daeseok Youn <daeseok.youn@gmail.com> - 2016-05-27 03:50 +0200
    Re: [PATCH 1/2 v2] staging: dgnc: remove redundant NULL check for  brd Luis de Bethencourt <luisbg@osg.samsung.com> - 2016-05-27 12:30 +0200

#1407771 — [PATCH 1/2 v2] staging: dgnc: remove redundant NULL check for brd

the "brd" value cannot be NULL in dgnc_finalize_board_init().
Because "brd" as a parameter of this function was already
checked for NULL.

the dgnc_finalize_board_init() as a static function was called
only from dgnc_found_board() function and brd->magic value
was assigned once in dgnc_found_board(). So it doesn't need to
check for DGNC_BOARD_MAGIC value.

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
---
V2: Adds more comments to Change Log.

 drivers/staging/dgnc/dgnc_driver.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/staging/dgnc/dgnc_driver.c b/drivers/staging/dgnc/dgnc_driver.c
index af2e835..22257d2 100644
--- a/drivers/staging/dgnc/dgnc_driver.c
+++ b/drivers/staging/dgnc/dgnc_driver.c
@@ -579,9 +579,6 @@ static int dgnc_finalize_board_init(struct dgnc_board *brd)
 {
 	int rc = 0;
 
-	if (!brd || brd->magic != DGNC_BOARD_MAGIC)
-		return -ENODEV;
-
 	if (brd->irq) {
 		rc = request_irq(brd->irq, brd->bd_ops->intr,
 				 IRQF_SHARED, "DGNC", brd);
-- 
1.9.1

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#1407985 — Re: [PATCH 1/2 v2] staging: dgnc: remove redundant NULL check for brd

On 27/05/16 02:42, Daeseok Youn wrote:
> the "brd" value cannot be NULL in dgnc_finalize_board_init().
> Because "brd" as a parameter of this function was already
> checked for NULL.
> 
> the dgnc_finalize_board_init() as a static function was called
> only from dgnc_found_board() function and brd->magic value
> was assigned once in dgnc_found_board(). So it doesn't need to
> check for DGNC_BOARD_MAGIC value.
> 
> Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
> ---
> V2: Adds more comments to Change Log.
> 
>  drivers/staging/dgnc/dgnc_driver.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/staging/dgnc/dgnc_driver.c b/drivers/staging/dgnc/dgnc_driver.c
> index af2e835..22257d2 100644
> --- a/drivers/staging/dgnc/dgnc_driver.c
> +++ b/drivers/staging/dgnc/dgnc_driver.c
> @@ -579,9 +579,6 @@ static int dgnc_finalize_board_init(struct dgnc_board *brd)
>  {
>  	int rc = 0;
>  
> -	if (!brd || brd->magic != DGNC_BOARD_MAGIC)
> -		return -ENODEV;
> -
>  	if (brd->irq) {
>  		rc = request_irq(brd->irq, brd->bd_ops->intr,
>  				 IRQF_SHARED, "DGNC", brd);
> 

Looks good.

Thanks for the fixes Daeseok :)

Luis

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