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rpmsg: Make modalias work for DeviceTree based devices

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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.

Tested-by: Rob Clark <robdclark@gmail.com>
Reported-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Bjorn Andersson 2017-06-28 14:53:23 -07:00
parent 82e484dfef
commit f4ce852811
1 changed files with 10 additions and 0 deletions
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10
drivers/rpmsg/rpmsg_core.c
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@ -342,6 +342,11 @@ 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);
}
@ -384,6 +389,11 @@ static int rpmsg_dev_match(struct device *dev, struct device_driver *drv)
static int rpmsg_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct rpmsg_device *rpdev = to_rpmsg_device(dev);
int ret;
ret = of_device_uevent_modalias(dev, env);
if (ret != -ENODEV)
return ret;
return add_uevent_var(env, "MODALIAS=" RPMSG_DEVICE_MODALIAS_FMT,
rpdev->id.name);