From: Dragos Tarcatu dragos_tarcatu@mentor.com
The volume and bytes kcontrols are currently not freeing their memory on initialization failures. When an error occurs, all the widgets loaded so far are unloaded via sof_widget_unload(). But this only happens for the widgets that got successfully loaded.
Fix that by kfree()-ing the allocated memory on load error.
Fixes: 311ce4fe7637d ("ASoC: SOF: Add support for loading topologies") Reviewed-by: Paul Olaru paul.olaru@nxp.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Signed-off-by: Dragos Tarcatu dragos_tarcatu@mentor.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- sound/soc/sof/topology.c | 67 +++++++++++++++++++++++++++++----------- 1 file changed, 49 insertions(+), 18 deletions(-)
diff --git a/sound/soc/sof/topology.c b/sound/soc/sof/topology.c index 6096731e89ce..d82ab981e840 100644 --- a/sound/soc/sof/topology.c +++ b/sound/soc/sof/topology.c @@ -942,18 +942,22 @@ static int sof_control_load_volume(struct snd_soc_component *scomp, struct sof_ipc_ctrl_data *cdata; int tlv[TLV_ITEMS]; unsigned int i; - int ret; + int ret = 0;
/* validate topology data */ - if (le32_to_cpu(mc->num_channels) > SND_SOC_TPLG_MAX_CHAN) - return -EINVAL; + if (le32_to_cpu(mc->num_channels) > SND_SOC_TPLG_MAX_CHAN) { + ret = -EINVAL; + goto out; + }
/* init the volume get/put data */ scontrol->size = struct_size(scontrol->control_data, chanv, le32_to_cpu(mc->num_channels)); scontrol->control_data = kzalloc(scontrol->size, GFP_KERNEL); - if (!scontrol->control_data) - return -ENOMEM; + if (!scontrol->control_data) { + ret = -ENOMEM; + goto out; + }
scontrol->comp_id = sdev->next_comp_id; scontrol->min_volume_step = le32_to_cpu(mc->min); @@ -963,7 +967,7 @@ static int sof_control_load_volume(struct snd_soc_component *scomp, /* set cmd for mixer control */ if (le32_to_cpu(mc->max) == 1) { scontrol->cmd = SOF_CTRL_CMD_SWITCH; - goto out; + goto skip; }
scontrol->cmd = SOF_CTRL_CMD_VOLUME; @@ -971,14 +975,15 @@ static int sof_control_load_volume(struct snd_soc_component *scomp, /* extract tlv data */ if (get_tlv_data(kc->tlv.p, tlv) < 0) { dev_err(sdev->dev, "error: invalid TLV data\n"); - return -EINVAL; + ret = -EINVAL; + goto out_free; }
/* set up volume table */ ret = set_up_volume_table(scontrol, tlv, le32_to_cpu(mc->max) + 1); if (ret < 0) { dev_err(sdev->dev, "error: setting up volume table\n"); - return ret; + goto out_free; }
/* set default volume values to 0dB in control */ @@ -988,7 +993,7 @@ static int sof_control_load_volume(struct snd_soc_component *scomp, cdata->chanv[i].value = VOL_ZERO_DB; }
-out: +skip: /* set up possible led control from mixer private data */ ret = sof_parse_tokens(scomp, &scontrol->led_ctl, led_tokens, ARRAY_SIZE(led_tokens), mc->priv.array, @@ -996,13 +1001,21 @@ static int sof_control_load_volume(struct snd_soc_component *scomp, if (ret != 0) { dev_err(sdev->dev, "error: parse led tokens failed %d\n", le32_to_cpu(mc->priv.size)); - return ret; + goto out_free_table; }
dev_dbg(sdev->dev, "tplg: load kcontrol index %d chans %d\n", scontrol->comp_id, scontrol->num_channels);
- return 0; + return ret; + +out_free_table: + if (le32_to_cpu(mc->max) > 1) + kfree(scontrol->volume_table); +out_free: + kfree(scontrol->control_data); +out: + return ret; }
static int sof_control_load_enum(struct snd_soc_component *scomp, @@ -1047,6 +1060,7 @@ static int sof_control_load_bytes(struct snd_soc_component *scomp, container_of(hdr, struct snd_soc_tplg_bytes_control, hdr); struct soc_bytes_ext *sbe = (struct soc_bytes_ext *)kc->private_value; int max_size = sbe->max; + int ret = 0;
/* init the get/put bytes data */ scontrol->size = sizeof(struct sof_ipc_ctrl_data) + @@ -1055,13 +1069,16 @@ static int sof_control_load_bytes(struct snd_soc_component *scomp, if (scontrol->size > max_size) { dev_err(sdev->dev, "err: bytes data size %d exceeds max %d.\n", scontrol->size, max_size); - return -EINVAL; + ret = -EINVAL; + goto out; }
scontrol->control_data = kzalloc(max_size, GFP_KERNEL); cdata = scontrol->control_data; - if (!scontrol->control_data) - return -ENOMEM; + if (!scontrol->control_data) { + ret = -ENOMEM; + goto out; + }
scontrol->comp_id = sdev->next_comp_id; scontrol->cmd = SOF_CTRL_CMD_BINARY; @@ -1076,23 +1093,32 @@ static int sof_control_load_bytes(struct snd_soc_component *scomp, if (cdata->data->magic != SOF_ABI_MAGIC) { dev_err(sdev->dev, "error: Wrong ABI magic 0x%08x.\n", cdata->data->magic); - return -EINVAL; + ret = -EINVAL; + goto out_free; } if (SOF_ABI_VERSION_INCOMPATIBLE(SOF_ABI_VERSION, cdata->data->abi)) { dev_err(sdev->dev, "error: Incompatible ABI version 0x%08x.\n", cdata->data->abi); - return -EINVAL; + ret = -EINVAL; + goto out_free; } if (cdata->data->size + sizeof(const struct sof_abi_hdr) != le32_to_cpu(control->priv.size)) { dev_err(sdev->dev, "error: Conflict in bytes vs. priv size.\n"); - return -EINVAL; + ret = -EINVAL; + goto out_free; } } - return 0; + + return ret; + +out_free: + kfree(scontrol->control_data); +out: + return ret; }
/* external kcontrol init - used for any driver specific init */ @@ -1150,6 +1176,11 @@ static int sof_control_load(struct snd_soc_component *scomp, int index, return 0; }
+ if (ret < 0) { + kfree(scontrol); + return ret; + } + dobj->private = scontrol; list_add(&scontrol->list, &sdev->kcontrol_list); return ret;