[Qemu-devel] Re: [PATCH 1/3] char: check for initial_reset_issued unnecessary

[Amit Shah <amit.shah@redhat.com>]

On (Wed) Oct 07 2009 [16:40:38], Amit Shah wrote:
> At init, qemu_chr_reset is always called with initial_reset_issued set to 1.
> So checking for it to be set is not necessary.
> 
> A later patch will make use of initial_reset_issued to send the reset event
> only if the char device is opened instead of each time when qemu resets it
> 
> Signed-off-by: Amit Shah <amit.shah@redhat.com>
> ---
>  qemu-char.c |    5 ++---
>  1 files changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/qemu-char.c b/qemu-char.c
> index 8084a67..99ab471 100644
> --- a/qemu-char.c
> +++ b/qemu-char.c
> @@ -127,7 +127,7 @@ static void qemu_chr_reset_bh(void *opaque)
>  
>  void qemu_chr_reset(CharDriverState *s)
>  {
> -    if (s->bh == NULL && initial_reset_issued) {
> +    if (s->bh == NULL) {
>  	s->bh = qemu_bh_new(qemu_chr_reset_bh, s);
>  	qemu_bh_schedule(s->bh);
>      }
> @@ -137,11 +137,10 @@ void qemu_chr_initial_reset(void)
>  {
>      CharDriverState *chr;
>  
> -    initial_reset_issued = 1;
> -
>      QTAILQ_FOREACH(chr, &chardevs, next) {
>          qemu_chr_reset(chr);
>      }
> +    initial_reset_issued = 1;
>  }

Actually this won't work since the actual reset is done in a
bh_schedule.

I'll have to find out another way of doing this.

		Amit