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    SubjectRe: [PATCH] new tty buffering locking fix
     On Fri, Feb 03, Linux Kernel Mailing List wrote:

    > [PATCH] new tty buffering locking fix
    >
    > Change locking in the new tty buffering facility from using tty->read_lock,
    > which is currently ignored by drivers and thus ineffective. New locking
    > uses a new tty buffering specific lock enforced centrally in the tty
    > buffering code.
    >
    > Two drivers (esp and cyclades) are updated to use the tty buffering
    > functions instead of accessing tty buffering internals directly. This is
    > required for the new locking to work.
    >
    > Minor checks for NULL buffers added to
    > tty_prepare_flip_string/tty_prepare_flip_string_flags
    >
    > Signed-off-by: Paul Fulghum <paulkf@microgate.com>
    > Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
    > Signed-off-by: Andrew Morton <akpm@osdl.org>
    > Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    >
    > drivers/char/cyclades.c | 6 +--
    > drivers/char/esp.c | 4 +-
    > drivers/char/tty_io.c | 77 ++++++++++++++++++++++++++++++-----------------
    > include/linux/kbd_kern.h | 5 +++
    > include/linux/tty.h | 2 +
    > include/linux/tty_flip.h | 7 +++-
    > 6 files changed, 68 insertions(+), 33 deletions(-)

    This patch breaks the hvc console, no input is accepted, even with
    init=/bin/sash? Any idea what this driver needs to do now?
    I wonder if it worked ok on -mm.

    --
    short story of a lazy sysadmin:
    alias appserv=wotan
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