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Subject[PATCH 2/2] staging: dgnc: remove redundant NULL check in
There were already checking NULL about channel_t / un_t
before calling dgnc_maxcps_room().

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
---
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
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