serial: core: Privatize tty->hw_stopped

Browse source

tty->hw_stopped is not used by the tty core and is thread-unsafe;
hw_stopped is a member of a bitfield whose fields are updated
non-atomically and no lock is suitable for serializing updates.

Replace serial core usage of tty->hw_stopped with uport->hw_stopped.
Use int storage which works around Alpha EV4/5 non-atomic byte storage,
since uart_port uses different locks to protect certain fields within the
structure.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Peter Hurley 2014-09-10 15:06:26 -04:00 • committed by Greg Kroah-Hartman

parent 317c136020

commit d01f4d181c

3 changed files with 22 additions and 23 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

14

drivers/tty/serial/bfin_uart.c

View file

28

drivers/tty/serial/serial_core.c

View file

3

include/linux/serial_core.h

View file