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Diffstat (limited to 'sound/soc/codecs/hdac_hdmi.c')
-rw-r--r--sound/soc/codecs/hdac_hdmi.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c
index 181cd3bf0b92..2abb742fc47b 100644
--- a/sound/soc/codecs/hdac_hdmi.c
+++ b/sound/soc/codecs/hdac_hdmi.c
@@ -1474,6 +1474,11 @@ static int hdmi_codec_probe(struct snd_soc_codec *codec)
* exit, we call pm_runtime_suspend() so that will do for us
*/
hlink = snd_hdac_ext_bus_get_link(edev->ebus, dev_name(&edev->hdac.dev));
+ if (!hlink) {
+ dev_err(&edev->hdac.dev, "hdac link not found\n");
+ return -EIO;
+ }
+
snd_hdac_ext_bus_link_get(edev->ebus, hlink);
ret = create_fill_widget_route_map(dapm);
@@ -1634,6 +1639,11 @@ static int hdac_hdmi_dev_probe(struct hdac_ext_device *edev)
/* hold the ref while we probe */
hlink = snd_hdac_ext_bus_get_link(edev->ebus, dev_name(&edev->hdac.dev));
+ if (!hlink) {
+ dev_err(&edev->hdac.dev, "hdac link not found\n");
+ return -EIO;
+ }
+
snd_hdac_ext_bus_link_get(edev->ebus, hlink);
hdmi_priv = devm_kzalloc(&codec->dev, sizeof(*hdmi_priv), GFP_KERNEL);
@@ -1744,6 +1754,11 @@ static int hdac_hdmi_runtime_suspend(struct device *dev)
}
hlink = snd_hdac_ext_bus_get_link(ebus, dev_name(dev));
+ if (!hlink) {
+ dev_err(dev, "hdac link not found\n");
+ return -EIO;
+ }
+
snd_hdac_ext_bus_link_put(ebus, hlink);
return 0;
@@ -1765,6 +1780,11 @@ static int hdac_hdmi_runtime_resume(struct device *dev)
return 0;
hlink = snd_hdac_ext_bus_get_link(ebus, dev_name(dev));
+ if (!hlink) {
+ dev_err(dev, "hdac link not found\n");
+ return -EIO;
+ }
+
snd_hdac_ext_bus_link_get(ebus, hlink);
err = snd_hdac_display_power(bus, true);