When rpmsg devices are expected to be matched based on their compatible
the modalias should reflect this, so that module autoloading has a
chance to match and load the appropriate module.
Reported-by: Rob Clark <robdclark@xxxxxxxxx>
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---
drivers/rpmsg/rpmsg_core.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c
index ad3d2a9df287..b7e16fc3a6c7 100644
--- a/drivers/rpmsg/rpmsg_core.c
+++ b/drivers/rpmsg/rpmsg_core.c
@@ -343,6 +343,11 @@ static ssize_t modalias_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct rpmsg_device *rpdev = to_rpmsg_device(dev);
+ ssize_t len;
+
+ len = of_device_modalias(dev, buf, PAGE_SIZE);
+ if (len != -ENODEV)
+ return len;
return sprintf(buf, RPMSG_DEVICE_MODALIAS_FMT "\n", rpdev->id.name);
}
--
2.12.0
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