Re: [PATCH spice-server] spicevmc: Avoid computing some variable value if not necessary

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Acked-by: Jonathon Jongsma <jjongsma@xxxxxxxxxx>


On Thu, 2017-01-26 at 15:31 +0000, Frediano Ziglio wrote:
> Signed-off-by: Frediano Ziglio <fziglio@xxxxxxxxxx>
> ---
>  server/spicevmc.c | 17 ++++++++---------
>  1 file changed, 8 insertions(+), 9 deletions(-)
> 
> diff --git a/server/spicevmc.c b/server/spicevmc.c
> index 89249b2..9bcbada 100644
> --- a/server/spicevmc.c
> +++ b/server/spicevmc.c
> @@ -592,13 +592,12 @@ static uint8_t
> *spicevmc_red_channel_alloc_msg_rcv_buf(RedChannelClient *rcc,
>                                                         uint16_t
> type,
>                                                         uint32_t
> size)
>  {
> -    RedVmcChannel *channel;
> -    RedClient *client = red_channel_client_get_client(rcc);
> -
> -    channel = RED_VMC_CHANNEL(red_channel_client_get_channel(rcc));
>  
>      switch (type) {
> -    case SPICE_MSGC_SPICEVMC_DATA:
> +    case SPICE_MSGC_SPICEVMC_DATA: {
> +        RedClient *client = red_channel_client_get_client(rcc);
> +        RedVmcChannel *channel =
> RED_VMC_CHANNEL(red_channel_client_get_channel(rcc));
> +
>          assert(!channel->recv_from_client_buf);
>  
>          channel->recv_from_client_buf =
> red_char_device_write_buffer_get(channel->chardev,
> @@ -609,6 +608,7 @@ static uint8_t
> *spicevmc_red_channel_alloc_msg_rcv_buf(RedChannelClient *rcc,
>              return NULL;
>          }
>          return channel->recv_from_client_buf->buf;
> +    }
>  
>      default:
>          return spice_malloc(size);
> @@ -621,15 +621,14 @@ static void
> spicevmc_red_channel_release_msg_rcv_buf(RedChannelClient *rcc,
>                                                       uint32_t size,
>                                                       uint8_t *msg)
>  {
> -    RedVmcChannel *channel;
> -
> -    channel = RED_VMC_CHANNEL(red_channel_client_get_channel(rcc));
>  
>      switch (type) {
> -    case SPICE_MSGC_SPICEVMC_DATA:
> +    case SPICE_MSGC_SPICEVMC_DATA: {
> +        RedVmcChannel *channel =
> RED_VMC_CHANNEL(red_channel_client_get_channel(rcc));
>          /* buffer wasn't pushed to device */
>          red_char_device_write_buffer_release(channel->chardev,
> &channel->recv_from_client_buf);
>          break;
> +    }
>      default:
>          free(msg);
>      }
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