linux.git/drivers/serial/serial_core.c, branch v2.6.29

serial: struct device - replace bus_id with dev_name(), dev_set_name()

2009-01-06T18:44:37+00:00

Signed-off-by: Kay Sievers 
Signed-off-by: Greg Kroah-Hartman

Serial: Allow port type to be specified when calling serial8250_register_port.

2009-01-02T18:19:43+00:00

Add flag value UPF_FIXED_TYPE which specifies that the UART type is
known and should not be probed.  For this case the UARTs properties
are just copied out of the uart_config entry.

This allows us to keep SOC specific 8250 probe code out of 8250.c.  In
this case we know the serial hardware will not be changing as it is on
the same silicon as the CPU, and we can specify it with certainty in
the board/cpu setup code.

The alternative is to load up 8250.c with a bunch of OCTEON specific
special cases in the probing code.

Signed-off-by: David Daney 
Signed-off-by: Andrew Morton 
Signed-off-by: Alan Cox 
Signed-off-by: Linus Torvalds

fix for tty-serial-move-port

2009-01-02T18:19:42+00:00

Hi Alan

next-20081204 crashes with the following message:

BUG: unable to handle kernel paging request at ffff88007d320248
IP: [] uart_remove_one_port+0xef/0x111
                kfree(info);
     393:       49 8d 7d 10             lea    0x10(%r13),%rdi
     397:       e8 00 00 00 00          callq  39c 

Signed-off-by: Alexander Beregalov 
Signed-off-by: Alan Cox 
Signed-off-by: Linus Torvalds

tty: We want the port object to be persistent

2009-01-02T18:19:42+00:00

Move the tty_port and uart_info bits around a little. By embedding the uart_info
into the uart_port we get rid of lots of corner case testing and also get the
ability to go port<->state<->info which is a bit more elegant than the current
data structures.

Downsides - we allocate a tiny bit more memory for unused ports, upside we've
removed as much code as it saved for most users..

Signed-off-by: Alan Cox 
Signed-off-by: Linus Torvalds

drivers/serial: use nr_irqs

2008-10-16T14:52:06+00:00

Signed-off-by: Yinghai Lu 
Signed-off-by: Ingo Molnar

serial: fix device name reporting when minor space is shared between drivers

2008-10-13T16:51:44+00:00

The multiple drivers share the minor space occupied by a particular major
number, the actual index within the device name's space is indicated by
the tty_driver->name_base + uart_port->line

Another usable formula is (uart_driver->minor - MINOR_BASE) + port->line

Use those to print the device names properly in such situations in
serial_core.c and 8250.c

Signed-off-by: David S. Miller 
Signed-off-by: Andrew Morton 
Signed-off-by: Alan Cox 
Signed-off-by: Linus Torvalds

serial-make-uart_ports-ioport-unsigned-long-fix

2008-10-13T16:51:39+00:00

Signed-off-by: Andrew Morton 
Signed-off-by: Alan Cox 
Signed-off-by: Linus Torvalds

tty: rework break handling

2008-07-22T20:03:28+00:00

Some hardware needs to do break handling itself and may have partial
support only. Make break_ctl return an error code. Add a tty driver flag
so you can indicate driver hardware side break support.

Signed-off-by: Alan Cox 
Signed-off-by: Linus Torvalds

serial: use tty_port

2008-07-21T00:12:35+00:00

Switch the serial_core based drivers to use the new tty_port structure.
We can't quite use all of it yet because of the dynamically allocated
extras in the serial_core layer.

Signed-off-by: Alan Cox 
Signed-off-by: Linus Torvalds

Subject: [PATCH 1/2] serial: Add flush_buffer() operation to uart_ops

2008-07-21T00:12:34+00:00

Serial drivers using DMA (like the atmel_serial driver) tend to get very
confused when the xmit buffer is flushed and nobody told them.  They
also tend to spew a lot of garbage since the DMA engine keeps running
after the buffer is flushed and possibly refilled with unrelated data.

This patch adds a new flush_buffer operation to the uart_ops struct,
along with a call to it from uart_flush_buffer() right after the xmit
buffer has been cleared. The driver can implement this in order to
syncronize its internal DMA state with the xmit buffer when the buffer
is flushed.

Signed-off-by: Haavard Skinnemoen 
Acked-by: Alan Cox 
Signed-off-by: Linus Torvalds