kernel_samsung_sm7125

jenna

History

Peter Hurley 7c8ab967e3 serial: Fix locking for uart driver set_termios() method The low-level uart driver may modify termios settings to override settings that are not compatible with the uart, such as CRTSCTS. Thus, callers of the low-level uart driver's set_termios() method must hold termios_rwsem write lock to prevent concurrent access to termios, in case such override occurs. The termios_rwsem lock requirement does not extend to console setup (ie., uart_set_options), as console setup cannot race with tty operations. Nor does this lock requirement extend to functions which cannot be concurrent with tty ioctls (ie., uart_port_startup() and uart_resume_port()). Further, always claim the port mutex to protect hardware re-reprogramming in the set_termios() uart driver method. Note this is unnecessary for console initialization in uart_set_options() which cannot be concurrent with other uart operations. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		10 years ago
..
00-INDEX	…
README.cycladesZ	…
driver	serial: Fix locking for uart driver set_termios() method	10 years ago
moxa-smartio	…
n_gsm.txt	…
rocket.txt	…
serial-rs485.txt	Documentation: serial: fix header path	11 years ago
tty.txt	tty: doc: Fix grammar in serial/tty	11 years ago

README.cycladesZ


The Cyclades-Z must have firmware loaded onto the card before it will
operate.  This operation should be performed during system startup,

The firmware, loader program and the latest device driver code are
available from Cyclades at
    ftp://ftp.cyclades.com/pub/cyclades/cyclades-z/linux/