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virtio/gpu: minor revision on virtio_gpu_send_cmd()

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This revises comments and completes reclaiming buf param.

Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
This commit is contained in:
Yanfeng Liu 2024-03-31 09:15:04 +08:00 • committed by Xiang Xiao
parent 715f8de1bb
commit 1eb96c3446
1 changed files with 8 additions and 1 deletions
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9
drivers/virtio/virtio-gpu.c
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@ -133,6 +133,8 @@ static FAR struct virtio_gpu_priv_s *g_virtio_gpu[VIRTIO_GPU_MAX_DISP];
/****************************************************************************
* Name: virtio_gpu_send_cmd
* Note: the caller should not touch `buf` after calling this, as it will be
* freed either here or in virtio_gpu_done().
****************************************************************************/
static int virtio_gpu_send_cmd(FAR struct virtqueue *vq,
@ -146,6 +148,7 @@ static int virtio_gpu_send_cmd(FAR struct virtqueue *vq,
sem_t sem;
struct virtio_gpu_cookie_s cookie;
virtio_free_buf(vq->vq_dev, buf);
nxsem_init(&sem, 0, 0);
cookie.blocking = true;
cookie.p = &sem;
@ -180,10 +183,14 @@ static int virtio_gpu_send_cmd(FAR struct virtqueue *vq,
}
else
{
virtio_free_buf(vq->vq_dev, buf);
kmm_free(cookie);
}
}
if (buf && ret < 0)
{
virtio_free_buf(vq->vq_dev, buf);
}
}
return ret;