From: Daeseok Youn <daeseok.youn@gmail.com>
To: lidza.louina@gmail.com
Cc: markh@compro.net, gregkh@linuxfoundation.org,
driverdev-devel@linuxdriverproject.org,
devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: [PATCH 1/3] staging: dgnc: remove redundant NULL check in
Date: Wed, 4 May 2016 14:13:04 +0900 [thread overview]
Message-ID: <20160504051304.GA20929@certreview.com> (raw)
tty and ch are already checked for NULL
before calling dgnc_block_til_ready().
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
---
drivers/staging/dgnc/dgnc_tty.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/drivers/staging/dgnc/dgnc_tty.c b/drivers/staging/dgnc/dgnc_tty.c
index 2cecdb0..d85d005 100644
--- a/drivers/staging/dgnc/dgnc_tty.c
+++ b/drivers/staging/dgnc/dgnc_tty.c
@@ -1172,17 +1172,12 @@ static int dgnc_block_til_ready(struct tty_struct *tty,
struct channel_t *ch)
{
int retval = 0;
- struct un_t *un = NULL;
+ struct un_t *un = tty->driver_data;
unsigned long flags;
uint old_flags = 0;
int sleep_on_un_flags = 0;
- if (!tty || tty->magic != TTY_MAGIC || !file || !ch ||
- ch->magic != DGNC_CHANNEL_MAGIC)
- return -ENXIO;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
+ if (!file)
return -ENXIO;
spin_lock_irqsave(&ch->ch_lock, flags);
--
2.8.2
next reply other threads:[~2016-05-04 5:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-04 5:13 Daeseok Youn [this message]
2016-05-09 12:08 ` [PATCH 1/3] staging: dgnc: remove redundant NULL check in Greg KH
2016-05-10 1:17 ` DaeSeok Youn
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160504051304.GA20929@certreview.com \
--to=daeseok.youn@gmail.com \
--cc=devel@driverdev.osuosl.org \
--cc=driverdev-devel@linuxdriverproject.org \
--cc=gregkh@linuxfoundation.org \
--cc=kernel-janitors@vger.kernel.org \
--cc=lidza.louina@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=markh@compro.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox