From: Jim MacArthur <jim.macarthur@linaro.org>
To: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Cc: qemu-devel@nongnu.org, Gerd Hoffmann <kraxel@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [PATCH v2 2/6] virtio-snd: add pcm_state_to_str()
Date: Wed, 11 Nov 2026 10:47:02 +0000 [thread overview]
Message-ID: <avRHpir8yFEA5QkA@linaro.org> (raw)
In-Reply-To: <20261110-virtio-snd-fixes-v2-2-d5b654217676@linaro.org>
On Tue, Nov 10, 2026 at 02:39:31PM +0200, Manos Pitsidianakis wrote:
> Add macro to print the stream state in a human-understandable state,
> since this is an internal enum and one would have to inspect the source
> code to understand what a e.g. "2" state means in an error message.
>
> Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
> ---
> hw/audio/virtio-snd.c | 49 +++++++++++++++++++++++++++++++++++++++----------
> 1 file changed, 39 insertions(+), 10 deletions(-)
>
> diff --git a/hw/audio/virtio-snd.c b/hw/audio/virtio-snd.c
> index bed36203f2..f1dc03d1b8 100644
> --- a/hw/audio/virtio-snd.c
> +++ b/hw/audio/virtio-snd.c
> @@ -38,6 +38,26 @@ typedef enum virtio_snd_pcm_state {
> VIRTIO_SND_PCM_STATE_RELEASED,
> } virtio_snd_pcm_state;
>
> +static inline const char *pcm_state_to_str(virtio_snd_pcm_state s)
> +{
> + switch (s) {
> + case VIRTIO_SND_PCM_STATE_UNINIT:
> + return "UNINIT";
> + case VIRTIO_SND_PCM_STATE_PARAMS_SET:
> + return "PARAMS_SET";
> + case VIRTIO_SND_PCM_STATE_PREPARED:
> + return "PREPARED";
> + case VIRTIO_SND_PCM_STATE_STARTED:
> + return "STARTED";
> + case VIRTIO_SND_PCM_STATE_STOPPED:
> + return "STOPPED";
> + case VIRTIO_SND_PCM_STATE_RELEASED:
> + return "RELEASED";
> + default:
> + return "invalid";
> + }
> +}
> +
> static inline bool virtio_snd_pcm_state_prepared(virtio_snd_pcm_state s)
> {
> return s > VIRTIO_SND_PCM_STATE_PARAMS_SET &&
> @@ -310,8 +330,10 @@ uint32_t virtio_snd_set_pcm_params(VirtIOSound *s,
> case VIRTIO_SND_PCM_STATE_RELEASED:
> break;
> default:
> - error_report("%s unexpected stream state in %s: %"PRIu32,
> - VIRTIO_DEVICE(s)->name, __func__, stream->state);
> + error_report("%s unexpected stream state in %s: "
> + "%s (%"PRIu32")", VIRTIO_DEVICE(s)->name,
> + __func__, pcm_state_to_str(stream->state),
> + stream->state);
> return cpu_to_le32(VIRTIO_SND_S_BAD_MSG);
> }
>
> @@ -535,8 +557,10 @@ static uint32_t virtio_snd_pcm_prepare(VirtIOSound *s, uint32_t stream_id)
> case VIRTIO_SND_PCM_STATE_RELEASED:
> break;
> default:
> - error_report("%s unexpected stream state in %s: %"PRIu32,
> - VIRTIO_DEVICE(s)->name, __func__, stream->state);
> + error_report("%s unexpected stream state in %s: "
> + "%s (%"PRIu32")", VIRTIO_DEVICE(s)->name,
> + __func__, pcm_state_to_str(stream->state),
> + stream->state);
> return cpu_to_le32(VIRTIO_SND_S_BAD_MSG);
> }
>
> @@ -624,8 +648,10 @@ static uint32_t virtio_snd_pcm_start_stop(VirtIOSound *s,
> case VIRTIO_SND_PCM_STATE_STOPPED:
> break;
> default:
> - error_report("%s unexpected stream state in %s start: %"PRIu32,
> - VIRTIO_DEVICE(s)->name, __func__, stream->state);
> + error_report("%s unexpected stream state in %s start: "
> + "%s (%"PRIu32")", VIRTIO_DEVICE(s)->name,
> + __func__, pcm_state_to_str(stream->state),
> + stream->state);
> return cpu_to_le32(VIRTIO_SND_S_BAD_MSG);
> }
>
> @@ -635,8 +661,9 @@ static uint32_t virtio_snd_pcm_start_stop(VirtIOSound *s,
> case VIRTIO_SND_PCM_STATE_STARTED:
> break;
> default:
> - error_report("%s unexpected stream state in %s stop: %"PRIu32,
> - VIRTIO_DEVICE(s)->name, __func__,
> + error_report("%s unexpected stream state in %s stop: "
> + "%s (%"PRIu32")", VIRTIO_DEVICE(s)->name,
> + __func__, pcm_state_to_str(stream->state),
> stream->state);
> return cpu_to_le32(VIRTIO_SND_S_BAD_MSG);
> }
> @@ -736,8 +763,10 @@ static void virtio_snd_handle_pcm_release(VirtIOSound *s,
> case VIRTIO_SND_PCM_STATE_STOPPED:
> break;
> default:
> - error_report("%s unexpected stream state in %s: %"PRIu32,
> - VIRTIO_DEVICE(s)->name, __func__, stream->state);
> + error_report("%s unexpected stream state in %s: "
> + "%s (%"PRIu32")", VIRTIO_DEVICE(s)->name,
> + __func__, pcm_state_to_str(stream->state),
> + stream->state);
> cmd->resp.code = cpu_to_le32(VIRTIO_SND_S_BAD_MSG);
> return;
> }
>
Reviewed-by: Jim MacArthur <jim.macarthur@linaro.org>
next prev parent reply other threads:[~2026-11-11 10:47 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-10 12:39 [PATCH v2 0/6] Various virtio-snd fixes again Manos Pitsidianakis
2026-11-10 12:39 ` [PATCH v2 1/6] virtio-snd: convert virtio_error to error_report Manos Pitsidianakis
2026-11-11 10:46 ` Jim MacArthur
2026-11-10 12:39 ` [PATCH v2 2/6] virtio-snd: add pcm_state_to_str() Manos Pitsidianakis
2026-11-11 10:47 ` Jim MacArthur [this message]
2026-11-10 12:39 ` [PATCH v2 3/6] virtio-snd: reject invalid feats in set_pcm_params Manos Pitsidianakis
2026-11-11 10:47 ` Jim MacArthur
2026-11-10 12:39 ` [PATCH v2 4/6] virtio-snd: don't allocate pcm_info zero-count buf Manos Pitsidianakis
2026-11-11 10:47 ` Jim MacArthur
2026-11-10 12:39 ` [PATCH v2 5/6] virtio-snd: cap maximum buffer_bytes to half a GiB Manos Pitsidianakis
2026-11-11 10:48 ` Jim MacArthur
2026-11-10 12:39 ` [PATCH v2 6/6] virtio-snd: period_bytes divides buffer_bytes Manos Pitsidianakis
2026-11-11 10:48 ` Jim MacArthur
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