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staging: dgnc: remove redundant variable null check

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The unit struct(un_t) was not used in dgnc_tty_hangup().

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Daeseok Youn 2016-07-06 15:13:14 +09:00 committed by Greg Kroah-Hartman
parent 3ca4b20a76
commit 18419f77a2
1 changed files with 0 additions and 6 deletions
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6
drivers/staging/dgnc/dgnc_tty.c
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@ -1289,15 +1289,9 @@ static int dgnc_block_til_ready(struct tty_struct *tty,
*/
static void dgnc_tty_hangup(struct tty_struct *tty)
{
struct un_t *un;
if (!tty || tty->magic != TTY_MAGIC)
return;
un = tty->driver_data;
if (!un || un->magic != DGNC_UNIT_MAGIC)
return;
/* flush the transmit queues */
dgnc_tty_flush_buffer(tty);
}