diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/tty/hvc/hvc_xen.c | 2 | ||||
| -rw-r--r-- | drivers/tty/n_tty.c | 4 | ||||
| -rw-r--r-- | drivers/tty/serial/8250/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/tty/serial/imx.c | 14 | ||||
| -rw-r--r-- | drivers/tty/sysrq.c | 6 |
6 files changed, 19 insertions, 11 deletions
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig index c01f45095877..82c4d2e45319 100644 --- a/drivers/tty/Kconfig +++ b/drivers/tty/Kconfig @@ -226,7 +226,7 @@ config CYCLADES config CYZ_INTR bool "Cyclades-Z interrupt mode operation" - depends on CYCLADES + depends on CYCLADES && PCI help The Cyclades-Z family of multiport cards allows 2 (two) driver op modes: polling and interrupt. In polling mode, the driver will check diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c index fa816b7193b6..11725422dacb 100644 --- a/drivers/tty/hvc/hvc_xen.c +++ b/drivers/tty/hvc/hvc_xen.c @@ -323,6 +323,7 @@ void xen_console_resume(void) } } +#ifdef CONFIG_HVC_XEN_FRONTEND static void xencons_disconnect_backend(struct xencons_info *info) { if (info->irq > 0) @@ -363,7 +364,6 @@ static int xen_console_remove(struct xencons_info *info) return 0; } -#ifdef CONFIG_HVC_XEN_FRONTEND static int xencons_remove(struct xenbus_device *dev) { return xen_console_remove(dev_get_drvdata(&dev->dev)); diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 84e71bd19082..41dda25da049 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -1801,7 +1801,7 @@ static void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old) { struct n_tty_data *ldata = tty->disc_data; - if (!old || (old->c_lflag ^ tty->termios.c_lflag) & ICANON) { + if (!old || (old->c_lflag ^ tty->termios.c_lflag) & (ICANON | EXTPROC)) { bitmap_zero(ldata->read_flags, N_TTY_BUF_SIZE); ldata->line_start = ldata->read_tail; if (!L_ICANON(tty) || !read_cnt(ldata)) { @@ -2493,7 +2493,7 @@ static int n_tty_ioctl(struct tty_struct *tty, struct file *file, return put_user(tty_chars_in_buffer(tty), (int __user *) arg); case TIOCINQ: down_write(&tty->termios_rwsem); - if (L_ICANON(tty)) + if (L_ICANON(tty) && !L_EXTPROC(tty)) retval = inq_canon(ldata); else retval = read_cnt(ldata); diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig index 6412f1455beb..6f4c180aadc1 100644 --- a/drivers/tty/serial/8250/Kconfig +++ b/drivers/tty/serial/8250/Kconfig @@ -372,7 +372,7 @@ config SERIAL_8250_MID tristate "Support for serial ports on Intel MID platforms" depends on SERIAL_8250 && PCI select HSU_DMA if SERIAL_8250_DMA - select HSU_DMA_PCI if X86_INTEL_MID + select HSU_DMA_PCI if (HSU_DMA && X86_INTEL_MID) select RATIONAL help Selecting this option will enable handling of the extra features diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 016e4be05cec..98176d12b3e1 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -2057,12 +2057,14 @@ static void serial_imx_enable_wakeup(struct imx_port *sport, bool on) val &= ~UCR3_AWAKEN; writel(val, sport->port.membase + UCR3); - val = readl(sport->port.membase + UCR1); - if (on) - val |= UCR1_RTSDEN; - else - val &= ~UCR1_RTSDEN; - writel(val, sport->port.membase + UCR1); + if (sport->have_rtscts) { + val = readl(sport->port.membase + UCR1); + if (on) + val |= UCR1_RTSDEN; + else + val &= ~UCR1_RTSDEN; + writel(val, sport->port.membase + UCR1); + } } static int imx_serial_port_suspend_noirq(struct device *dev) diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c index b07f864f68e8..ed27fda13387 100644 --- a/drivers/tty/sysrq.c +++ b/drivers/tty/sysrq.c @@ -133,6 +133,12 @@ static void sysrq_handle_crash(int key) { char *killer = NULL; + /* we need to release the RCU read lock here, + * otherwise we get an annoying + * 'BUG: sleeping function called from invalid context' + * complaint from the kernel before the panic. + */ + rcu_read_unlock(); panic_on_oops = 1; /* force panic */ wmb(); *killer = 1; |