diff options
| author | Xiaobing Tu <xiaobing.tu@intel.com> | 2012-03-16 04:00:26 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-04-09 21:12:45 +0200 |
| commit | c56a00a165712fd73081f40044b1e64407bb1875 (patch) | |
| tree | fee2ca034eb2cc52e6a21880ad875e6d05307d57 /drivers/isdn | |
| parent | tty/vt: handle bad user buffer in {G,P}IO_CMAP ioctl (diff) | |
| download | linux-c56a00a165712fd73081f40044b1e64407bb1875.tar.xz linux-c56a00a165712fd73081f40044b1e64407bb1875.zip | |
tty: hold lock across tty buffer finding and buffer filling
tty_buffer_request_room is well protected, but while after it returns,
it releases the port->lock. tty->buf.tail might be modified
by either irq handler or other threads. The patch adds more protection
by holding the lock across tty buffer finding and buffer filling.
Signed-off-by: Alek Du <alek.du@intel.com>
Signed-off-by: Xiaobing Tu <xiaobing.tu@intel.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/isdn')
0 files changed, 0 insertions, 0 deletions