[PATCH v2] vhost: compilation fix for GCC-12

[Bagas Sanjaya]

On Fri, Sep 02, 2022 at 06:11:52PM +0530, Amit Prakash Shukla wrote:
> ../lib/vhost/virtio_net.c:941:35: error:
> 		'buf_vec[0].buf_len' may be used uninitialized
> 		[-Werror=maybe-uninitialized]
>   941 |         buf_len = buf_vec[vec_idx].buf_len;
>       |                   ~~~~~~~~~~~~~~~~^~~~~~~~
> ../lib/vhost/virtio_net.c: In function 'virtio_dev_rx_packed':
> ../lib/vhost/virtio_net.c:1285:27: note: 'buf_vec' declared here
>  1285 |         struct buf_vector buf_vec[BUF_VECTOR_MAX];
>       |                           ^~~~~~~
> cc1: all warnings being treated as errors
> 
> Fixes: 93520085efda ("vhost: add packed ring single enqueue")
> Cc: stable at dpdk.org

Please describe what this patch is doing (the current state of code,
why it errored, and how it is fixing the error). Write the description
in imperative mood. I don't see the description other than error message
above.

Also, for stable patches submission, Cc stable at vger.kernel.org.

Thanks.

-- 
An old man doll... just what I always wanted! - Clara
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