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Date: Mon, 8 Feb 2010 21:12:30 +0100
From: Jan Kiszka <jan.kiszka@....de>
To: David Miller <davem@...emloft.net>,
Karsten Keil <isdn@...ux-pingi.de>
Cc: linux-kernel@...r.kernel.org, i4ldeveloper@...tserv.isdn4linux.de,
isdn4linux@...tserv.isdn4linux.de, netdev@...r.kernel.org,
Alan Cox <alan@...rguk.ukuu.org.uk>,
Marcel Holtmann <marcel@...tmann.org>
Subject: [PATCH v2 26/41] CAPI: Drop remaining NULL checks on tty->driver_data
tty_struct's driver_data cannot be NULL, no need to test for it.
Signed-off-by: Jan Kiszka <jan.kiszka@....de>
---
drivers/isdn/capi/capi.c | 64 ++++++++++++++++++++++-----------------------
1 files changed, 31 insertions(+), 33 deletions(-)
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
index e164a8f..acc811b 100644
--- a/drivers/isdn/capi/capi.c
+++ b/drivers/isdn/capi/capi.c
@@ -1097,7 +1097,7 @@ static void capinc_tty_close(struct tty_struct *tty, struct file *filp)
static int capinc_tty_write(struct tty_struct * tty,
const unsigned char *buf, int count)
{
- struct capiminor *mp = (struct capiminor *)tty->driver_data;
+ struct capiminor *mp = tty->driver_data;
struct sk_buff *skb;
unsigned long flags;
@@ -1105,7 +1105,7 @@ static int capinc_tty_write(struct tty_struct * tty,
printk(KERN_DEBUG "capinc_tty_write(count=%d)\n", count);
#endif
- if (!mp || !mp->nccip) {
+ if (!mp->nccip) {
#ifdef _DEBUG_TTYFUNCS
printk(KERN_DEBUG "capinc_tty_write: mp or mp->ncci NULL\n");
#endif
@@ -1140,7 +1140,7 @@ static int capinc_tty_write(struct tty_struct * tty,
static int capinc_tty_put_char(struct tty_struct *tty, unsigned char ch)
{
- struct capiminor *mp = (struct capiminor *)tty->driver_data;
+ struct capiminor *mp = tty->driver_data;
struct sk_buff *skb;
unsigned long flags;
int ret = 1;
@@ -1149,7 +1149,7 @@ static int capinc_tty_put_char(struct tty_struct *tty, unsigned char ch)
printk(KERN_DEBUG "capinc_put_char(%u)\n", ch);
#endif
- if (!mp || !mp->nccip) {
+ if (!mp->nccip) {
#ifdef _DEBUG_TTYFUNCS
printk(KERN_DEBUG "capinc_tty_put_char: mp or mp->ncci NULL\n");
#endif
@@ -1184,7 +1184,7 @@ static int capinc_tty_put_char(struct tty_struct *tty, unsigned char ch)
static void capinc_tty_flush_chars(struct tty_struct *tty)
{
- struct capiminor *mp = (struct capiminor *)tty->driver_data;
+ struct capiminor *mp = tty->driver_data;
struct sk_buff *skb;
unsigned long flags;
@@ -1192,7 +1192,7 @@ static void capinc_tty_flush_chars(struct tty_struct *tty)
printk(KERN_DEBUG "capinc_tty_flush_chars\n");
#endif
- if (!mp || !mp->nccip) {
+ if (!mp->nccip) {
#ifdef _DEBUG_TTYFUNCS
printk(KERN_DEBUG "capinc_tty_flush_chars: mp or mp->ncci NULL\n");
#endif
@@ -1213,9 +1213,10 @@ static void capinc_tty_flush_chars(struct tty_struct *tty)
static int capinc_tty_write_room(struct tty_struct *tty)
{
- struct capiminor *mp = (struct capiminor *)tty->driver_data;
+ struct capiminor *mp = tty->driver_data;
int room;
- if (!mp || !mp->nccip) {
+
+ if (!mp->nccip) {
#ifdef _DEBUG_TTYFUNCS
printk(KERN_DEBUG "capinc_tty_write_room: mp or mp->ncci NULL\n");
#endif
@@ -1231,8 +1232,9 @@ static int capinc_tty_write_room(struct tty_struct *tty)
static int capinc_tty_chars_in_buffer(struct tty_struct *tty)
{
- struct capiminor *mp = (struct capiminor *)tty->driver_data;
- if (!mp || !mp->nccip) {
+ struct capiminor *mp = tty->driver_data;
+
+ if (!mp->nccip) {
#ifdef _DEBUG_TTYFUNCS
printk(KERN_DEBUG "capinc_tty_chars_in_buffer: mp or mp->ncci NULL\n");
#endif
@@ -1266,55 +1268,51 @@ static void capinc_tty_set_termios(struct tty_struct *tty, struct ktermios * old
#endif
}
-static void capinc_tty_throttle(struct tty_struct * tty)
+static void capinc_tty_throttle(struct tty_struct *tty)
{
- struct capiminor *mp = (struct capiminor *)tty->driver_data;
+ struct capiminor *mp = tty->driver_data;
#ifdef _DEBUG_TTYFUNCS
printk(KERN_DEBUG "capinc_tty_throttle\n");
#endif
- if (mp)
- mp->ttyinstop = 1;
+ mp->ttyinstop = 1;
}
-static void capinc_tty_unthrottle(struct tty_struct * tty)
+static void capinc_tty_unthrottle(struct tty_struct *tty)
{
- struct capiminor *mp = (struct capiminor *)tty->driver_data;
+ struct capiminor *mp = tty->driver_data;
unsigned long flags;
+
#ifdef _DEBUG_TTYFUNCS
printk(KERN_DEBUG "capinc_tty_unthrottle\n");
#endif
- if (mp) {
- spin_lock_irqsave(&workaround_lock, flags);
- mp->ttyinstop = 0;
- handle_minor_recv(mp);
- spin_unlock_irqrestore(&workaround_lock, flags);
- }
+ spin_lock_irqsave(&workaround_lock, flags);
+ mp->ttyinstop = 0;
+ handle_minor_recv(mp);
+ spin_unlock_irqrestore(&workaround_lock, flags);
}
static void capinc_tty_stop(struct tty_struct *tty)
{
- struct capiminor *mp = (struct capiminor *)tty->driver_data;
+ struct capiminor *mp = tty->driver_data;
+
#ifdef _DEBUG_TTYFUNCS
printk(KERN_DEBUG "capinc_tty_stop\n");
#endif
- if (mp) {
- mp->ttyoutstop = 1;
- }
+ mp->ttyoutstop = 1;
}
static void capinc_tty_start(struct tty_struct *tty)
{
- struct capiminor *mp = (struct capiminor *)tty->driver_data;
+ struct capiminor *mp = tty->driver_data;
unsigned long flags;
+
#ifdef _DEBUG_TTYFUNCS
printk(KERN_DEBUG "capinc_tty_start\n");
#endif
- if (mp) {
- spin_lock_irqsave(&workaround_lock, flags);
- mp->ttyoutstop = 0;
- (void)handle_minor_send(mp);
- spin_unlock_irqrestore(&workaround_lock, flags);
- }
+ spin_lock_irqsave(&workaround_lock, flags);
+ mp->ttyoutstop = 0;
+ (void)handle_minor_send(mp);
+ spin_unlock_irqrestore(&workaround_lock, flags);
}
static void capinc_tty_hangup(struct tty_struct *tty)
--
1.6.0.2
--
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