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Commit e47e7379 authored by Daeseok Youn's avatar Daeseok Youn Committed by Greg Kroah-Hartman
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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: default avatarDaeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 16f10a82

drivers/staging/dgnc/dgnc_tty.c

+2 −13
Original line number Diff line number Diff line
@@ -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