Commit 326f28e9 authored by Eric Sesterhenn's avatar Eric Sesterhenn Committed by Linus Torvalds

[PATCH] More !tty cleanups in drivers/char

Another bunch of checks in the char drivers .put_char() and .write()
routines, where tty can never be NULL.  This patch removes these checks to
save some code.  Coverity choked at those with the following bug ids:

isicom.c  767, 766
specialix.c 773, 774
synclink_cs.c 779, 781
synclink_gt.c 784, 785
synclinkmp.c 784, 785
Signed-off-by: 's avatarEric Sesterhenn <snakebyte@gmx.de>
Cc: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: 's avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: 's avatarLinus Torvalds <torvalds@osdl.org>
parent fa791f5b
......@@ -1145,7 +1145,7 @@ static int isicom_write(struct tty_struct *tty, const unsigned char *buf,
if (isicom_paranoia_check(port, tty->name, "isicom_write"))
return 0;
if (!tty || !port->xmit_buf)
if (!port->xmit_buf)
return 0;
spin_lock_irqsave(&card->card_lock, flags);
......@@ -1180,7 +1180,7 @@ static void isicom_put_char(struct tty_struct *tty, unsigned char ch)
if (isicom_paranoia_check(port, tty->name, "isicom_put_char"))
return;
if (!tty || !port->xmit_buf)
if (!port->xmit_buf)
return;
spin_lock_irqsave(&card->card_lock, flags);
......
......@@ -1582,7 +1582,7 @@ static void mgslpc_put_char(struct tty_struct *tty, unsigned char ch)
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_put_char"))
return;
if (!tty || !info->tx_buf)
if (!info->tx_buf)
return;
spin_lock_irqsave(&info->lock,flags);
......@@ -1649,7 +1649,7 @@ static int mgslpc_write(struct tty_struct * tty,
__FILE__,__LINE__,info->device_name,count);
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_write") ||
!tty || !info->tx_buf)
!info->tx_buf)
goto cleanup;
if (info->params.mode == MGSL_MODE_HDLC) {
......
......@@ -1683,7 +1683,7 @@ static int sx_write(struct tty_struct * tty,
bp = port_Board(port);
if (!tty || !port->xmit_buf || !tmp_buf) {
if (!port->xmit_buf || !tmp_buf) {
func_exit();
return 0;
}
......@@ -1733,7 +1733,7 @@ static void sx_put_char(struct tty_struct * tty, unsigned char ch)
return;
}
dprintk (SX_DEBUG_TX, "check tty: %p %p\n", tty, port->xmit_buf);
if (!tty || !port->xmit_buf) {
if (!port->xmit_buf) {
func_exit();
return;
}
......
......@@ -870,7 +870,7 @@ static int write(struct tty_struct *tty,
goto cleanup;
DBGINFO(("%s write count=%d\n", info->device_name, count));
if (!tty || !info->tx_buf)
if (!info->tx_buf)
goto cleanup;
if (count > info->max_frame_size) {
......@@ -924,7 +924,7 @@ static void put_char(struct tty_struct *tty, unsigned char ch)
if (sanity_check(info, tty->name, "put_char"))
return;
DBGINFO(("%s put_char(%d)\n", info->device_name, ch));
if (!tty || !info->tx_buf)
if (!info->tx_buf)
return;
spin_lock_irqsave(&info->lock,flags);
if (!info->tx_active && (info->tx_count < info->max_frame_size))
......
......@@ -988,7 +988,7 @@ static int write(struct tty_struct *tty,
if (sanity_check(info, tty->name, "write"))
goto cleanup;
if (!tty || !info->tx_buf)
if (!info->tx_buf)
goto cleanup;
if (info->params.mode == MGSL_MODE_HDLC) {
......@@ -1067,7 +1067,7 @@ static void put_char(struct tty_struct *tty, unsigned char ch)
if (sanity_check(info, tty->name, "put_char"))
return;
if (!tty || !info->tx_buf)
if (!info->tx_buf)
return;
spin_lock_irqsave(&info->lock,flags);
......
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