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ASoC: SOF: add error handling to snd_sof_ipc_msg_data()

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If an invalid stream is passed to snd_sof_ipc_msg_data() it won't
fill the provided object with data. The caller has to be able to
recognise such cases to avoid handling invalid data. Make the
function return an error when failing.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20210928103516.8066-1-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Guennadi Liakhovetski 2021-09-28 13:35:16 +03:00 committed by Mark Brown
parent b05cfb1215
commit 6a0ba071b7
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
8 changed files with 71 additions and 39 deletions
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3
sound/soc/sof/imx/imx8.c
View File

@ -369,11 +369,12 @@ static int imx8_get_bar_index(struct snd_sof_dev *sdev, u32 type)
return type;
}
static void imx8_ipc_msg_data(struct snd_sof_dev *sdev,
static int imx8_ipc_msg_data(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream,
void *p, size_t sz)
{
sof_mailbox_read(sdev, sdev->dsp_box.offset, p, sz);
return 0;
}
static int imx8_ipc_pcm_params(struct snd_sof_dev *sdev,

3
sound/soc/sof/imx/imx8m.c
View File

@ -232,11 +232,12 @@ static int imx8m_get_bar_index(struct snd_sof_dev *sdev, u32 type)
return type;
}
static void imx8m_ipc_msg_data(struct snd_sof_dev *sdev,
static int imx8m_ipc_msg_data(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream,
void *p, size_t sz)
{
sof_mailbox_read(sdev, sdev->dsp_box.offset, p, sz);
return 0;
}
static int imx8m_ipc_pcm_params(struct snd_sof_dev *sdev,

11
sound/soc/sof/intel/hda-ipc.c
View File

@ -253,7 +253,7 @@ int hda_dsp_ipc_get_window_offset(struct snd_sof_dev *sdev, u32 id)
return SRAM_WINDOW_OFFSET(id);
}
void hda_ipc_msg_data(struct snd_sof_dev *sdev,
int hda_ipc_msg_data(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream,
void *p, size_t sz)
{
@ -268,10 +268,13 @@ void hda_ipc_msg_data(struct snd_sof_dev *sdev,
hda_stream.hstream);
/* The stream might already be closed */
if (hstream)
sof_mailbox_read(sdev, hda_stream->stream.posn_offset,
p, sz);
if (!hstream)
return -ESTRPIPE;
sof_mailbox_read(sdev, hda_stream->stream.posn_offset, p, sz);
}
return 0;
}
int hda_ipc_pcm_params(struct snd_sof_dev *sdev,

2
sound/soc/sof/intel/hda.h
View File

@ -563,7 +563,7 @@ int hda_dsp_stream_spib_config(struct snd_sof_dev *sdev,
struct hdac_ext_stream *stream,
int enable, u32 size);
void hda_ipc_msg_data(struct snd_sof_dev *sdev,
int hda_ipc_msg_data(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream,
void *p, size_t sz);
int hda_ipc_pcm_params(struct snd_sof_dev *sdev,

8
sound/soc/sof/intel/intel-ipc.c
View File

@ -25,7 +25,7 @@ struct intel_stream {
};
/* Mailbox-based Intel IPC implementation */
void intel_ipc_msg_data(struct snd_sof_dev *sdev,
int intel_ipc_msg_data(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream,
void *p, size_t sz)
{
@ -35,9 +35,13 @@ void intel_ipc_msg_data(struct snd_sof_dev *sdev,
struct intel_stream *stream = substream->runtime->private_data;
/* The stream might already be closed */
if (stream)
if (!stream)
return -ESTRPIPE;
sof_mailbox_read(sdev, stream->posn_offset, p, sz);
}
return 0;
}
EXPORT_SYMBOL_NS(intel_ipc_msg_data, SND_SOC_SOF_INTEL_HIFI_EP_IPC);

39
sound/soc/sof/ipc.c
View File

@ -394,6 +394,7 @@ static void ipc_comp_notification(struct snd_sof_dev *sdev,
{
u32 msg_type = hdr->cmd & SOF_CMD_TYPE_MASK;
struct sof_ipc_ctrl_data *cdata;
int ret;
switch (msg_type) {
case SOF_IPC_COMP_GET_VALUE:
@ -403,7 +404,12 @@ static void ipc_comp_notification(struct snd_sof_dev *sdev,
return;
/* read back full message */
snd_sof_ipc_msg_data(sdev, NULL, cdata, hdr->size);
ret = snd_sof_ipc_msg_data(sdev, NULL, cdata, hdr->size);
if (ret < 0) {
dev_err(sdev->dev,
"error: failed to read component event: %d\n", ret);
goto err;
}
break;
default:
dev_err(sdev->dev, "error: unhandled component message %#x\n", msg_type);
@ -412,6 +418,7 @@ static void ipc_comp_notification(struct snd_sof_dev *sdev,
snd_sof_control_notify(sdev, cdata);
err:
kfree(cdata);
}
@ -420,10 +427,14 @@ void snd_sof_ipc_msgs_rx(struct snd_sof_dev *sdev)
{
struct sof_ipc_cmd_hdr hdr;
u32 cmd, type;
int err = 0;
int err;
/* read back header */
snd_sof_ipc_msg_data(sdev, NULL, &hdr, sizeof(hdr));
err = snd_sof_ipc_msg_data(sdev, NULL, &hdr, sizeof(hdr));
if (err < 0) {
dev_warn(sdev->dev, "failed to read IPC header: %d\n", err);
return;
}
ipc_log_header(sdev->dev, "ipc rx", hdr.cmd);
cmd = hdr.cmd & SOF_GLB_TYPE_MASK;
@ -477,11 +488,15 @@ EXPORT_SYMBOL(snd_sof_ipc_msgs_rx);
static void ipc_trace_message(struct snd_sof_dev *sdev, u32 msg_type)
{
struct sof_ipc_dma_trace_posn posn;
int ret;
switch (msg_type) {
case SOF_IPC_TRACE_DMA_POSITION:
/* read back full message */
snd_sof_ipc_msg_data(sdev, NULL, &posn, sizeof(posn));
ret = snd_sof_ipc_msg_data(sdev, NULL, &posn, sizeof(posn));
if (ret < 0)
dev_warn(sdev->dev, "failed to read trace position: %d\n", ret);
else
snd_sof_trace_update_pos(sdev, &posn);
break;
default:
@ -500,7 +515,7 @@ static void ipc_period_elapsed(struct snd_sof_dev *sdev, u32 msg_id)
struct snd_sof_pcm_stream *stream;
struct sof_ipc_stream_posn posn;
struct snd_sof_pcm *spcm;
int direction;
int direction, ret;
spcm = snd_sof_find_spcm_comp(scomp, msg_id, &direction);
if (!spcm) {
@ -511,7 +526,11 @@ static void ipc_period_elapsed(struct snd_sof_dev *sdev, u32 msg_id)
}
stream = &spcm->stream[direction];
snd_sof_ipc_msg_data(sdev, stream->substream, &posn, sizeof(posn));
ret = snd_sof_ipc_msg_data(sdev, stream->substream, &posn, sizeof(posn));
if (ret < 0) {
dev_warn(sdev->dev, "failed to read stream position: %d\n", ret);
return;
}
dev_vdbg(sdev->dev, "posn : host 0x%llx dai 0x%llx wall 0x%llx\n",
posn.host_posn, posn.dai_posn, posn.wallclock);
@ -530,7 +549,7 @@ static void ipc_xrun(struct snd_sof_dev *sdev, u32 msg_id)
struct snd_sof_pcm_stream *stream;
struct sof_ipc_stream_posn posn;
struct snd_sof_pcm *spcm;
int direction;
int direction, ret;
spcm = snd_sof_find_spcm_comp(scomp, msg_id, &direction);
if (!spcm) {
@ -540,7 +559,11 @@ static void ipc_xrun(struct snd_sof_dev *sdev, u32 msg_id)
}
stream = &spcm->stream[direction];
snd_sof_ipc_msg_data(sdev, stream->substream, &posn, sizeof(posn));
ret = snd_sof_ipc_msg_data(sdev, stream->substream, &posn, sizeof(posn));
if (ret < 0) {
dev_warn(sdev->dev, "failed to read overrun position: %d\n", ret);
return;
}
dev_dbg(sdev->dev, "posn XRUN: host %llx comp %d size %d\n",
posn.host_posn, posn.xrun_comp_id, posn.xrun_size);

4
sound/soc/sof/ops.h
View File

@ -422,11 +422,11 @@ static inline int snd_sof_load_firmware(struct snd_sof_dev *sdev)
}
/* host DSP message data */
static inline void snd_sof_ipc_msg_data(struct snd_sof_dev *sdev,
static inline int snd_sof_ipc_msg_data(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream,
void *p, size_t sz)
{
sof_ops(sdev)->ipc_msg_data(sdev, substream, p, sz);
return sof_ops(sdev)->ipc_msg_data(sdev, substream, p, sz);
}
/* host configure DSP HW parameters */

4
sound/soc/sof/sof-priv.h
View File

@ -210,7 +210,7 @@ struct snd_sof_dsp_ops {
#endif
/* host read DSP stream data */
void (*ipc_msg_data)(struct snd_sof_dev *sdev,
int (*ipc_msg_data)(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream,
void *p, size_t sz); /* mandatory */
@ -567,7 +567,7 @@ int sof_block_read(struct snd_sof_dev *sdev, enum snd_sof_fw_blk_type blk_type,
int sof_fw_ready(struct snd_sof_dev *sdev, u32 msg_id);
void intel_ipc_msg_data(struct snd_sof_dev *sdev,
int intel_ipc_msg_data(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream,
void *p, size_t sz);
int intel_ipc_pcm_params(struct snd_sof_dev *sdev,