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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-11-12 16:02:30 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-11-12 16:02:30 -0800 |
| commit | edaa4d668babd65e98e1452043996bbefc0285b0 (patch) | |
| tree | a6cf4c6083ae49e8d1b7a4efc92a32864a79e534 /drivers/serial/8250.c | |
| parent | 891cbd30ef456664e50bbd28436ef3006a81cf7c (diff) | |
| parent | 40e3465db2cffd64e069ca82ee981025554bc159 (diff) | |
| download | blackbird-op-linux-edaa4d668babd65e98e1452043996bbefc0285b0.tar.gz blackbird-op-linux-edaa4d668babd65e98e1452043996bbefc0285b0.zip | |
Merge branch 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6
* 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
n_gsm: Fix length handling
n_gsm: Copy n2 over when configuring via ioctl interface
serial: bfin_5xx: grab port lock before making port termios changes
serial: bfin_5xx: disable CON_PRINTBUFFER for consoles
serial: bfin_5xx: remove redundant SSYNC to improve TX speed
serial: bfin_5xx: always include DMA headers
vcs: make proper usage of the poll flags
amiserial: Remove unused variable icount
8250: Fix tcsetattr to avoid ioctl(TIOCMIWAIT) hang
tty_ldisc: Fix BUG() on hangup
TTY: restore tty_ldisc_wait_idle
SERIAL: blacklist si3052 chip
drivers/serial/bfin_5xx.c: Fix line continuation defects
tty: prevent DOS in the flush_to_ldisc
8250: add support for Kouwell KW-L221N-2
nozomi: Fix warning from the previous TIOCGCOUNT changes
tty: fix warning in synclink driver
tty: Fix formatting in tty.h
tty: the development tree is now done in git
Diffstat (limited to 'drivers/serial/8250.c')
| -rw-r--r-- | drivers/serial/8250.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index 4d8e14b7aa93..dd5e1ac22251 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -2343,8 +2343,11 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios, /* * CTS flow control flag and modem status interrupts + * Only disable MSI if no threads are waiting in + * serial_core::uart_wait_modem_status */ - up->ier &= ~UART_IER_MSI; + if (!waitqueue_active(&up->port.state->port.delta_msr_wait)) + up->ier &= ~UART_IER_MSI; if (!(up->bugs & UART_BUG_NOMSR) && UART_ENABLE_MS(&up->port, termios->c_cflag)) up->ier |= UART_IER_MSI; |
