[Qemu-devel] Re: [PATCH][RESEND] char: Flush read buffer in mux_chr_can_read

[Jan Kiszka <jan.kiszka@siemens.com>]

Am 19.10.2010 17:04, Jan Kiszka wrote:
> Move the buffer flush from mux_chr_read to mux_chr_can_read. While the
> latter is called periodically, the former will only be invoked when new
> characters arrive at the back-end. This caused problems to front-end
> drivers whenever they were unable to read data immediately, e.g.
> virtio-console attached to stdio.
> 

Ping.

> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
> ---
>  qemu-char.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/qemu-char.c b/qemu-char.c
> index 6d2dce7..f4c3876 100644
> --- a/qemu-char.c
> +++ b/qemu-char.c
> @@ -398,6 +398,8 @@ static int mux_chr_can_read(void *opaque)
>      MuxDriver *d = chr->opaque;
>      int m = d->focus;
>  
> +    mux_chr_accept_input(opaque);
> +
>      if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
>          return 1;
>      if (d->chr_can_read[m])
> @@ -412,8 +414,6 @@ static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
>      int m = d->focus;
>      int i;
>  
> -    mux_chr_accept_input (opaque);
> -
>      for(i = 0; i < size; i++)
>          if (mux_proc_byte(chr, d, buf[i])) {
>              if (d->prod[m] == d->cons[m] &&