Hi Greg, This patch series fixes several locking and functional problems with the .set_ldisc() notification sent by the tty core: 1) termios is used without holding termios_rwsem 2) uart port flags are changed without holding port mutex 3) several of the drivers call their enable_ms() routines directly without holding port lock 4) The set_ldisc notification will turn on modem status interrupts if the CD line is being used for N_PPS time signal, but doesn't turn modem status interrupts back off if N_PPS is being unset.
Note: this series depends on the 26-patch 'tty locking changes' series and the 10-patch 'serial core fixes' series. Regards, Peter Hurley (5): tty: Allow safe access to termios for set_ldisc() handlers serial: core: Claim port mutex for set_ldisc() serial: core: Pass termios to set_ldisc() notifications serial: Take uart port lock for direct *_enable_ms() serial: Test/disable MSIs if switching from N_PPS drivers/tty/serial/8250/8250_core.c | 27 ++++++++++++++++++++++++--- drivers/tty/serial/amba-pl010.c | 24 +++++++++++++++++++++--- drivers/tty/serial/atmel_serial.c | 11 +++++++++-- drivers/tty/serial/bfin_uart.c | 5 +++-- drivers/tty/serial/clps711x.c | 5 +++-- drivers/tty/serial/serial_core.c | 7 +++++-- drivers/tty/tty_ldisc.c | 5 ++++- include/linux/serial_core.h | 2 +- 8 files changed, 70 insertions(+), 16 deletions(-) -- 2.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
