diff options
Diffstat (limited to 'drivers/tty')
-rw-r--r-- | drivers/tty/n_gsm.c | 2 | ||||
-rw-r--r-- | drivers/tty/pty.c | 79 | ||||
-rw-r--r-- | drivers/tty/serial/8250/8250_port.c | 11 | ||||
-rw-r--r-- | drivers/tty/serial/8250/Kconfig | 1 | ||||
-rw-r--r-- | drivers/tty/serial/uartlite.c | 8 | ||||
-rw-r--r-- | drivers/tty/synclink.c | 4 | ||||
-rw-r--r-- | drivers/tty/synclink_gt.c | 4 | ||||
-rw-r--r-- | drivers/tty/synclinkmp.c | 4 | ||||
-rw-r--r-- | drivers/tty/tty_io.c | 6 |
9 files changed, 61 insertions, 58 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index c016207..0c27a00 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -2662,7 +2662,7 @@ static int gsm_mux_net_start_xmit(struct sk_buff *skb, STATS(net).tx_bytes += skb->len; gsm_dlci_data_kick(dlci); /* And tell the kernel when the last transmit started. */ - net->trans_start = jiffies; + netif_trans_update(net); muxnet_put(mux_net); return NETDEV_TX_OK; } diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c index e16a49b..cf0dc51 100644 --- a/drivers/tty/pty.c +++ b/drivers/tty/pty.c @@ -626,7 +626,7 @@ static int pty_unix98_ioctl(struct tty_struct *tty, */ static struct tty_struct *ptm_unix98_lookup(struct tty_driver *driver, - struct inode *ptm_inode, int idx) + struct file *file, int idx) { /* Master must be open via /dev/ptmx */ return ERR_PTR(-EIO); @@ -642,12 +642,12 @@ static struct tty_struct *ptm_unix98_lookup(struct tty_driver *driver, */ static struct tty_struct *pts_unix98_lookup(struct tty_driver *driver, - struct inode *pts_inode, int idx) + struct file *file, int idx) { struct tty_struct *tty; mutex_lock(&devpts_mutex); - tty = devpts_get_priv(pts_inode); + tty = devpts_get_priv(file->f_path.dentry); mutex_unlock(&devpts_mutex); /* Master must be open before slave */ if (!tty) @@ -663,14 +663,14 @@ static int pty_unix98_install(struct tty_driver *driver, struct tty_struct *tty) /* this is called once with whichever end is closed last */ static void pty_unix98_remove(struct tty_driver *driver, struct tty_struct *tty) { - struct inode *ptmx_inode; + struct pts_fs_info *fsi; if (tty->driver->subtype == PTY_TYPE_MASTER) - ptmx_inode = tty->driver_data; + fsi = tty->driver_data; else - ptmx_inode = tty->link->driver_data; - devpts_kill_index(ptmx_inode, tty->index); - devpts_del_ref(ptmx_inode); + fsi = tty->link->driver_data; + devpts_kill_index(fsi, tty->index); + devpts_put_ref(fsi); } static const struct tty_operations ptm_unix98_ops = { @@ -720,8 +720,9 @@ static const struct tty_operations pty_unix98_ops = { static int ptmx_open(struct inode *inode, struct file *filp) { + struct pts_fs_info *fsi; struct tty_struct *tty; - struct inode *slave_inode; + struct dentry *dentry; int retval; int index; @@ -734,54 +735,46 @@ static int ptmx_open(struct inode *inode, struct file *filp) if (retval) return retval; + fsi = devpts_get_ref(inode, filp); + retval = -ENODEV; + if (!fsi) + goto out_free_file; + /* find a device that is not in use. */ mutex_lock(&devpts_mutex); - index = devpts_new_index(inode); - if (index < 0) { - retval = index; - mutex_unlock(&devpts_mutex); - goto err_file; - } - + index = devpts_new_index(fsi); mutex_unlock(&devpts_mutex); - mutex_lock(&tty_mutex); - tty = tty_init_dev(ptm_driver, index); + retval = index; + if (index < 0) + goto out_put_ref; - if (IS_ERR(tty)) { - retval = PTR_ERR(tty); - goto out; - } + mutex_lock(&tty_mutex); + tty = tty_init_dev(ptm_driver, index); /* The tty returned here is locked so we can safely drop the mutex */ mutex_unlock(&tty_mutex); - set_bit(TTY_PTY_LOCK, &tty->flags); /* LOCK THE SLAVE */ - tty->driver_data = inode; + retval = PTR_ERR(tty); + if (IS_ERR(tty)) + goto out; /* - * In the case where all references to ptmx inode are dropped and we - * still have /dev/tty opened pointing to the master/slave pair (ptmx - * is closed/released before /dev/tty), we must make sure that the inode - * is still valid when we call the final pty_unix98_shutdown, thus we - * hold an additional reference to the ptmx inode. For the same /dev/tty - * last close case, we also need to make sure the super_block isn't - * destroyed (devpts instance unmounted), before /dev/tty is closed and - * on its release devpts_kill_index is called. + * From here on out, the tty is "live", and the index and + * fsi will be killed/put by the tty_release() */ - devpts_add_ref(inode); + set_bit(TTY_PTY_LOCK, &tty->flags); /* LOCK THE SLAVE */ + tty->driver_data = fsi; tty_add_file(tty, filp); - slave_inode = devpts_pty_new(inode, - MKDEV(UNIX98_PTY_SLAVE_MAJOR, index), index, - tty->link); - if (IS_ERR(slave_inode)) { - retval = PTR_ERR(slave_inode); + dentry = devpts_pty_new(fsi, index, tty->link); + if (IS_ERR(dentry)) { + retval = PTR_ERR(dentry); goto err_release; } - tty->link->driver_data = slave_inode; + tty->link->driver_data = dentry; retval = ptm_driver->ops->open(tty, filp); if (retval) @@ -793,12 +786,14 @@ static int ptmx_open(struct inode *inode, struct file *filp) return 0; err_release: tty_unlock(tty); + // This will also put-ref the fsi tty_release(inode, filp); return retval; out: - mutex_unlock(&tty_mutex); - devpts_kill_index(inode, index); -err_file: + devpts_kill_index(fsi, index); +out_put_ref: + devpts_put_ref(fsi); +out_free_file: tty_free_file(filp); return retval; } diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index e213da0..00ad263 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -1403,9 +1403,18 @@ static void __do_stop_tx_rs485(struct uart_8250_port *p) /* * Empty the RX FIFO, we are not interested in anything * received during the half-duplex transmission. + * Enable previously disabled RX interrupts. */ - if (!(p->port.rs485.flags & SER_RS485_RX_DURING_TX)) + if (!(p->port.rs485.flags & SER_RS485_RX_DURING_TX)) { serial8250_clear_fifos(p); + + serial8250_rpm_get(p); + + p->ier |= UART_IER_RLSI | UART_IER_RDI; + serial_port_out(&p->port, UART_IER, p->ier); + + serial8250_rpm_put(p); + } } static void serial8250_em485_handle_stop_tx(unsigned long arg) diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig index 64742a0..4d7cb9c 100644 --- a/drivers/tty/serial/8250/Kconfig +++ b/drivers/tty/serial/8250/Kconfig @@ -324,7 +324,6 @@ config SERIAL_8250_EM config SERIAL_8250_RT288X bool "Ralink RT288x/RT305x/RT3662/RT3883 serial port support" depends on SERIAL_8250 - depends on MIPS || COMPILE_TEST default y if MIPS_ALCHEMY || SOC_RT288X || SOC_RT305X || SOC_RT3883 || SOC_MT7620 help Selecting this option will add support for the alternate register diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c index c9fdfc8..d08baa6 100644 --- a/drivers/tty/serial/uartlite.c +++ b/drivers/tty/serial/uartlite.c @@ -72,7 +72,7 @@ static void uartlite_outbe32(u32 val, void __iomem *addr) iowrite32be(val, addr); } -static const struct uartlite_reg_ops uartlite_be = { +static struct uartlite_reg_ops uartlite_be = { .in = uartlite_inbe32, .out = uartlite_outbe32, }; @@ -87,21 +87,21 @@ static void uartlite_outle32(u32 val, void __iomem *addr) iowrite32(val, addr); } -static const struct uartlite_reg_ops uartlite_le = { +static struct uartlite_reg_ops uartlite_le = { .in = uartlite_inle32, .out = uartlite_outle32, }; static inline u32 uart_in32(u32 offset, struct uart_port *port) { - const struct uartlite_reg_ops *reg_ops = port->private_data; + struct uartlite_reg_ops *reg_ops = port->private_data; return reg_ops->in(port->membase + offset); } static inline void uart_out32(u32 val, u32 offset, struct uart_port *port) { - const struct uartlite_reg_ops *reg_ops = port->private_data; + struct uartlite_reg_ops *reg_ops = port->private_data; reg_ops->out(val, port->membase + offset); } diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c index f5476e2..c8c7601 100644 --- a/drivers/tty/synclink.c +++ b/drivers/tty/synclink.c @@ -7708,7 +7708,7 @@ static netdev_tx_t hdlcdev_xmit(struct sk_buff *skb, dev_kfree_skb(skb); /* save start time for transmit timeout detection */ - dev->trans_start = jiffies; + netif_trans_update(dev); /* start hardware transmitter if necessary */ spin_lock_irqsave(&info->irq_spinlock,flags); @@ -7764,7 +7764,7 @@ static int hdlcdev_open(struct net_device *dev) mgsl_program_hw(info); /* enable network layer transmit */ - dev->trans_start = jiffies; + netif_trans_update(dev); netif_start_queue(dev); /* inform generic HDLC layer of current DCD status */ diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c index c0a2f5a..d5b6471 100644 --- a/drivers/tty/synclink_gt.c +++ b/drivers/tty/synclink_gt.c @@ -1493,7 +1493,7 @@ static netdev_tx_t hdlcdev_xmit(struct sk_buff *skb, dev->stats.tx_bytes += skb->len; /* save start time for transmit timeout detection */ - dev->trans_start = jiffies; + netif_trans_update(dev); spin_lock_irqsave(&info->lock, flags); tx_load(info, skb->data, skb->len); @@ -1552,7 +1552,7 @@ static int hdlcdev_open(struct net_device *dev) program_hw(info); /* enable network layer transmit */ - dev->trans_start = jiffies; + netif_trans_update(dev); netif_start_queue(dev); /* inform generic HDLC layer of current DCD status */ diff --git a/drivers/tty/synclinkmp.c b/drivers/tty/synclinkmp.c index 90da0c7..3f89685 100644 --- a/drivers/tty/synclinkmp.c +++ b/drivers/tty/synclinkmp.c @@ -1612,7 +1612,7 @@ static netdev_tx_t hdlcdev_xmit(struct sk_buff *skb, dev_kfree_skb(skb); /* save start time for transmit timeout detection */ - dev->trans_start = jiffies; + netif_trans_update(dev); /* start hardware transmitter if necessary */ spin_lock_irqsave(&info->lock,flags); @@ -1668,7 +1668,7 @@ static int hdlcdev_open(struct net_device *dev) program_hw(info); /* enable network layer transmit */ - dev->trans_start = jiffies; + netif_trans_update(dev); netif_start_queue(dev); /* inform generic HDLC layer of current DCD status */ diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 9b04d72..24d5491 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -1367,12 +1367,12 @@ static ssize_t tty_line_name(struct tty_driver *driver, int index, char *p) * Locking: tty_mutex must be held. If the tty is found, bump the tty kref. */ static struct tty_struct *tty_driver_lookup_tty(struct tty_driver *driver, - struct inode *inode, int idx) + struct file *file, int idx) { struct tty_struct *tty; if (driver->ops->lookup) - tty = driver->ops->lookup(driver, inode, idx); + tty = driver->ops->lookup(driver, file, idx); else tty = driver->ttys[idx]; @@ -2040,7 +2040,7 @@ static struct tty_struct *tty_open_by_driver(dev_t device, struct inode *inode, } /* check whether we're reopening an existing tty */ - tty = tty_driver_lookup_tty(driver, inode, index); + tty = tty_driver_lookup_tty(driver, filp, index); if (IS_ERR(tty)) { mutex_unlock(&tty_mutex); goto out; |