diff options
Diffstat (limited to 'drivers/soundwire/intel_auxdevice.c')
| -rw-r--r-- | drivers/soundwire/intel_auxdevice.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/soundwire/intel_auxdevice.c b/drivers/soundwire/intel_auxdevice.c index 8807e01cbf7c..d110f2b587d5 100644 --- a/drivers/soundwire/intel_auxdevice.c +++ b/drivers/soundwire/intel_auxdevice.c @@ -317,6 +317,20 @@ static int intel_link_probe(struct auxiliary_device *auxdev, bus->link_id = auxdev->id; bus->clk_stop_timeout = 1; + /* + * paranoia check: make sure ACPI-reported number of links is aligned with + * hardware capabilities. + */ + ret = sdw_intel_get_link_count(sdw); + if (ret < 0) { + dev_err(dev, "%s: sdw_intel_get_link_count failed: %d\n", __func__, ret); + return ret; + } + if (ret <= sdw->instance) { + dev_err(dev, "%s: invalid link id %d, link count %d\n", __func__, auxdev->id, ret); + return -EINVAL; + } + sdw_cdns_probe(cdns); /* Set ops */ |