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ASoC: hdac_hdmi: Fix possible memory leak on parse and map nid failure 

During failure, widgets in cvt_list and pin_list are not freed. So fix
the possible memory leak by freeing them when failure occurs.

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Guneshwor Singh <guneshwor.o.singh@intel.com>
Acked-By: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Subhransu S. Prusty 2017-11-07 16:16:26 +05:30 committed by Mark Brown
parent eb50fa1739
commit 1c0a7de226
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 30 additions and 6 deletions
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36
sound/soc/codecs/hdac_hdmi.c
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@ -1453,6 +1453,8 @@ static int hdac_hdmi_parse_and_map_nid(struct hdac_ext_device *edev,
int i, num_nodes;
struct hdac_device *hdac = &edev->hdac;
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct hdac_hdmi_cvt *temp_cvt, *cvt_next;
struct hdac_hdmi_pin *temp_pin, *pin_next;
int ret;
hdac_hdmi_skl_enable_all_pins(hdac);
@ -1482,32 +1484,54 @@ static int hdac_hdmi_parse_and_map_nid(struct hdac_ext_device *edev,
case AC_WID_AUD_OUT:
ret = hdac_hdmi_add_cvt(edev, nid);
if (ret < 0)
return ret;
goto free_widgets;
break;
case AC_WID_PIN:
ret = hdac_hdmi_add_pin(edev, nid);
if (ret < 0)
return ret;
goto free_widgets;
break;
}
}
hdac->end_nid = nid;
if (!hdmi->num_pin || !hdmi->num_cvt)
return -EIO;
if (!hdmi->num_pin || !hdmi->num_cvt) {
ret = -EIO;
goto free_widgets;
}
ret = hdac_hdmi_create_dais(hdac, dais, hdmi, hdmi->num_cvt);
if (ret) {
dev_err(&hdac->dev, "Failed to create dais with err: %d\n",
ret);
return ret;
goto free_widgets;
}
*num_dais = hdmi->num_cvt;
ret = hdac_hdmi_init_dai_map(edev);
if (ret < 0)
goto free_widgets;
return hdac_hdmi_init_dai_map(edev);
return ret;
free_widgets:
list_for_each_entry_safe(temp_cvt, cvt_next, &hdmi->cvt_list, head) {
list_del(&temp_cvt->head);
kfree(temp_cvt->name);
kfree(temp_cvt);
}
list_for_each_entry_safe(temp_pin, pin_next, &hdmi->pin_list, head) {
for (i = 0; i < temp_pin->num_ports; i++)
temp_pin->ports[i].pin = NULL;
kfree(temp_pin->ports);
list_del(&temp_pin->head);
kfree(temp_pin);
}
return ret;
}
static void hdac_hdmi_eld_notify_cb(void *aptr, int port, int pipe)