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    SubjectRe: [PATCH][RESEND 3] disassociate_ctty SMP fix
    Rik van Riel <riel@conectiva.com.br> wrote:
    >
    > ===== drivers/char/tty_io.c 1.55 vs edited =====
    > --- 1.55/drivers/char/tty_io.c Tue Jan 14 23:37:20 2003
    > +++ edited/drivers/char/tty_io.c Tue Feb 4 23:02:52 2003
    > @@ -425,19 +425,21 @@
    > */
    > void do_tty_hangup(void *data)
    > {
    > - struct tty_struct *tty = (struct tty_struct *) data;
    > + struct tty_struct *tty;
    > struct file * cons_filp = NULL;
    > struct task_struct *p;
    > struct list_head *l;
    > struct pid *pid;
    > int closecount = 0, n;
    >
    > - if (!tty)
    > - return;
    > -
    > /* inuse_filps is protected by the single kernel lock */
    > lock_kernel();
    > -
    > + tty = (struct tty_struct *) data;
    > + if (!tty) {
    > + unlock_kernel();
    > + return;
    > + }
    > +
    > check_tty_count(tty, "do_tty_hangup");
    > file_list_lock();
    > for (l = tty->tty_files.next; l != &tty->tty_files; l = l->next) {

    This part is a no-op...

    -
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