linux-kernel - [PATCH 3/6] staging: dgap: remove bogus null test in dgap_tty

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Date:	Mon, 2 Jun 2014 14:06:53 +0900
From:	Daeseok Youn <daeseok.youn@...il.com>
To:	lidza.louina@...il.com, gregkh@...uxfoundation.org
Cc:	markh@...pro.net, dan.carpenter@...cle.com,
	driverdev-devel@...uxdriverproject.org, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/6] staging: dgap: remove bogus null test in dgap_tty_init()

- The channels array were set to NULL in dgap_found_board().
- Removes redundant null check for channels array in for loop,
if one of the channel cannot be allocated, dgap_tty_init() just returns
an error.

Signed-off-by: Daeseok Youn <daeseok.youn@...il.com>
---
 drivers/staging/dgap/dgap.c |   13 ++++---------
 1 files changed, 4 insertions(+), 9 deletions(-)

diff --git a/drivers/staging/dgap/dgap.c b/drivers/staging/dgap/dgap.c
index 5556a6e..fcfa061 100644
--- a/drivers/staging/dgap/dgap.c
+++ b/drivers/staging/dgap/dgap.c
@@ -1379,12 +1379,10 @@ static int dgap_tty_init(struct board_t *brd)
 	 * when the driver was first loaded.
 	 */
 	for (i = 0; i < brd->nasync; i++) {
-		if (!brd->channels[i]) {
-			brd->channels[i] =
-				kzalloc(sizeof(struct channel_t), GFP_KERNEL);
-			if (!brd->channels[i])
-				return -ENOMEM;
-		}
+		brd->channels[i] =
+			kzalloc(sizeof(struct channel_t), GFP_KERNEL);
+		if (!brd->channels[i])
+			return -ENOMEM;
 	}
 
 	ch = brd->channels[0];
@@ -1398,9 +1396,6 @@ static int dgap_tty_init(struct board_t *brd)
 	/* Set up channel variables */
 	for (i = 0; i < brd->nasync; i++, ch = brd->channels[i], bs++) {
 
-		if (!brd->channels[i])
-			continue;
-
 		spin_lock_init(&ch->ch_lock);
 
 		/* Store all our magic numbers */
-- 
1.7.1

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