[PATCH 2/2] staging: dgnc: remove redundant NULL check in

[Daeseok Youn]

There were already checking NULL about channel_t / un_t
before calling dgnc_maxcps_room().

Signed-off-by: Daeseok Youn <daeseok.youn@xxxxxxxxx>
---
 drivers/staging/dgnc/dgnc_tty.c | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/drivers/staging/dgnc/dgnc_tty.c b/drivers/staging/dgnc/dgnc_tty.c
index e97faaa..200d3aa 100644
--- a/drivers/staging/dgnc/dgnc_tty.c
+++ b/drivers/staging/dgnc/dgnc_tty.c
@@ -1536,19 +1536,8 @@ static int dgnc_tty_chars_in_buffer(struct tty_struct *tty)
  */
 static int dgnc_maxcps_room(struct tty_struct *tty, int bytes_available)
 {
-	struct channel_t *ch = NULL;
-	struct un_t *un = NULL;
-
-	if (!tty)
-		return bytes_available;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGNC_UNIT_MAGIC)
-		return bytes_available;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
-		return bytes_available;
+	struct un_t *un = tty->driver_data;
+	struct channel_t *ch = un->un_ch;
 
 	/*
 	 * If its not the Transparent print device, return
-- 
1.9.1