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Message-ID: <20081205171036.3528.20768.stgit@localhost.localdomain>
Date: Fri, 05 Dec 2008 17:10:39 +0000
From: Alan Cox <alan@...rguk.ukuu.org.uk>
To: davem@...emloft.net, netdev@...r.kernel.org
Subject: [PATCH 1/2] tty: Flags should be accessed via the foo_bit interfaces
From: Alan Cox <alan@...hat.com>
We have various drivers that poke around directly and we need to clean this
up before it causes problems.
Signed-off-by: Alan Cox <alan@...hat.com>
---
drivers/net/irda/irtty-sir.c | 7 +++----
drivers/net/slip.c | 11 +++++------
drivers/net/wan/x25_asy.c | 8 ++++----
drivers/net/wireless/strip.c | 8 +++-----
4 files changed, 15 insertions(+), 19 deletions(-)
diff --git a/drivers/net/irda/irtty-sir.c b/drivers/net/irda/irtty-sir.c
index 6bcee01..d53aa95 100644
--- a/drivers/net/irda/irtty-sir.c
+++ b/drivers/net/irda/irtty-sir.c
@@ -191,7 +191,7 @@ static int irtty_do_write(struct sir_dev *dev, const unsigned char *ptr, size_t
tty = priv->tty;
if (!tty->ops->write)
return 0;
- tty->flags |= (1 << TTY_DO_WRITE_WAKEUP);
+ set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
writelen = tty_write_room(tty);
if (writelen > len)
writelen = len;
@@ -263,8 +263,7 @@ static void irtty_write_wakeup(struct tty_struct *tty)
IRDA_ASSERT(priv != NULL, return;);
IRDA_ASSERT(priv->magic == IRTTY_MAGIC, return;);
- tty->flags &= ~(1 << TTY_DO_WRITE_WAKEUP);
-
+ clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
if (priv->dev)
sirdev_write_complete(priv->dev);
}
@@ -522,7 +521,7 @@ static void irtty_close(struct tty_struct *tty)
/* Stop tty */
irtty_stop_receiver(tty, TRUE);
- tty->flags &= ~(1 << TTY_DO_WRITE_WAKEUP);
+ clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
if (tty->ops->stop)
tty->ops->stop(tty);
diff --git a/drivers/net/slip.c b/drivers/net/slip.c
index 1d58991..11bcbb8 100644
--- a/drivers/net/slip.c
+++ b/drivers/net/slip.c
@@ -402,7 +402,7 @@ static void sl_encaps(struct slip *sl, unsigned char *icp, int len)
* if we did not request it before write operation.
* 14 Oct 1994 Dmitry Gorodchanin.
*/
- sl->tty->flags |= (1 << TTY_DO_WRITE_WAKEUP);
+ set_bit(TTY_DO_WRITE_WAKEUP, &sl->tty->flags);
actual = sl->tty->ops->write(sl->tty, sl->xbuff, count);
#ifdef SL_CHECK_TRANSMIT
sl->dev->trans_start = jiffies;
@@ -432,7 +432,7 @@ static void slip_write_wakeup(struct tty_struct *tty)
/* Now serial buffer is almost free & we can start
* transmission of another packet */
sl->tx_packets++;
- tty->flags &= ~(1 << TTY_DO_WRITE_WAKEUP);
+ clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
sl_unlock(sl);
return;
}
@@ -465,7 +465,7 @@ static void sl_tx_timeout(struct net_device *dev)
(tty_chars_in_buffer(sl->tty) || sl->xleft) ?
"bad line quality" : "driver error");
sl->xleft = 0;
- sl->tty->flags &= ~(1 << TTY_DO_WRITE_WAKEUP);
+ clear_bit(TTY_DO_WRITE_WAKEUP, &sl->tty->flags);
sl_unlock(sl);
#endif
}
@@ -515,10 +515,9 @@ sl_close(struct net_device *dev)
struct slip *sl = netdev_priv(dev);
spin_lock_bh(&sl->lock);
- if (sl->tty) {
+ if (sl->tty)
/* TTY discipline is running. */
- sl->tty->flags &= ~(1 << TTY_DO_WRITE_WAKEUP);
- }
+ clear_bit(TTY_DO_WRITE_WAKEUP, &sl->tty->flags);
netif_stop_queue(dev);
sl->rcount = 0;
sl->xleft = 0;
diff --git a/drivers/net/wan/x25_asy.c b/drivers/net/wan/x25_asy.c
index 2a6c7a6..e188699 100644
--- a/drivers/net/wan/x25_asy.c
+++ b/drivers/net/wan/x25_asy.c
@@ -243,7 +243,7 @@ static void x25_asy_encaps(struct x25_asy *sl, unsigned char *icp, int len)
* if we did not request it before write operation.
* 14 Oct 1994 Dmitry Gorodchanin.
*/
- sl->tty->flags |= (1 << TTY_DO_WRITE_WAKEUP);
+ set_bit(TTY_DO_WRITE_WAKEUP, &sl->tty->flags);
actual = sl->tty->ops->write(sl->tty, sl->xbuff, count);
sl->xleft = count - actual;
sl->xhead = sl->xbuff + actual;
@@ -268,7 +268,7 @@ static void x25_asy_write_wakeup(struct tty_struct *tty)
/* Now serial buffer is almost free & we can start
* transmission of another packet */
sl->stats.tx_packets++;
- tty->flags &= ~(1 << TTY_DO_WRITE_WAKEUP);
+ clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
x25_asy_unlock(sl);
return;
}
@@ -291,7 +291,7 @@ static void x25_asy_timeout(struct net_device *dev)
(tty_chars_in_buffer(sl->tty) || sl->xleft) ?
"bad line quality" : "driver error");
sl->xleft = 0;
- sl->tty->flags &= ~(1 << TTY_DO_WRITE_WAKEUP);
+ clear_bit(TTY_DO_WRITE_WAKEUP, &sl->tty->flags);
x25_asy_unlock(sl);
}
spin_unlock(&sl->lock);
@@ -504,7 +504,7 @@ static int x25_asy_close(struct net_device *dev)
spin_lock(&sl->lock);
if (sl->tty)
- sl->tty->flags &= ~(1 << TTY_DO_WRITE_WAKEUP);
+ clear_bit(TTY_DO_WRITE_WAKEUP, &sl->tty->flags);
netif_stop_queue(dev);
sl->rcount = 0;
diff --git a/drivers/net/wireless/strip.c b/drivers/net/wireless/strip.c
index 417e9e6..35442b1 100644
--- a/drivers/net/wireless/strip.c
+++ b/drivers/net/wireless/strip.c
@@ -1252,7 +1252,7 @@ static void strip_write_some_more(struct tty_struct *tty)
#endif
} else { /* Else start transmission of another packet */
- tty->flags &= ~(1 << TTY_DO_WRITE_WAKEUP);
+ clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
strip_unlock(strip_info);
}
}
@@ -1455,8 +1455,7 @@ static void strip_send(struct strip *strip_info, struct sk_buff *skb)
*/
strip_info->tx_head = strip_info->tx_buff;
strip_info->tx_left = ptr - strip_info->tx_buff;
- strip_info->tty->flags |= (1 << TTY_DO_WRITE_WAKEUP);
-
+ set_bit(TTY_DO_WRITE_WAKEUP, &strip_info->tty->flags);
/*
* 4. Debugging check to make sure we're not overflowing the buffer.
*/
@@ -2455,8 +2454,7 @@ static int strip_close_low(struct net_device *dev)
if (strip_info->tty == NULL)
return -EBUSY;
- strip_info->tty->flags &= ~(1 << TTY_DO_WRITE_WAKEUP);
-
+ clear_bit(TTY_DO_WRITE_WAKEUP, &strip_info->tty->flags);
netif_stop_queue(dev);
/*
--
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