Yin Kangkai 0d0389e541 serial: change the divisor latch only when prescalar actually changed ... In 8250.c original ns16550 autoconfig code, we change the divisor latch when we goto to high speed mode, we're assuming the previous speed is legacy. This some times is not true. For example in a system with both CONFIG_SERIAL_8250 and CONFIG_SERIAL_8250_PNP set, in this case, the code (autoconfig) will be called twice, one in serial8250_init/probe() and the other is from serial_pnp_probe. When serial_pnp_probe calls the autoconfig for NS16550A, it's already in high speed mode, change the divisor latch (quot << 3) in this case will make the UART console garbled. CC: Greg Kroah-Hartman <greg@kroah.com> CC: David Woodhouse <dwmw2@infradead.org> CC: linux-kernel@vger.kernel.org CC: stable@kernel.org Signed-off-by: Yin Kangkai <kangkai.yin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>		2011-02-17 11:23:50 -08:00
..
hvc	hvc: add Blackfin JTAG console support	2011-02-17 11:12:40 -08:00
serial	serial: change the divisor latch only when prescalar actually changed	2011-02-17 11:23:50 -08:00
vt	tty,vcs removing con_buf/conf_buf_mtx	2011-02-17 11:13:19 -08:00
Makefile
n_gsm.c
n_hdlc.c
n_r3964.c
n_tty.c
pty.c
sysrq.c
tty_audit.c
tty_buffer.c
tty_io.c
tty_ioctl.c
tty_ldisc.c	tty_ldisc: don't use flush_scheduled_work()	2011-02-03 14:12:25 -08:00
tty_mutex.c
tty_port.c