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

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Message-ID: <20160527014142.GA32739@SEL-JYOUN-D1>
Date:	Fri, 27 May 2016 10:42:22 +0900
From:	Daeseok Youn <daeseok.youn@...il.com>
To:	lidza.louina@...il.com
Cc:	markh@...pro.net, gregkh@...uxfoundation.org,
	driverdev-devel@...uxdriverproject.org, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
	luisbg@....samsung.com
Subject: [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@...il.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