On 04/14/2016 10:56 AM, John Paul Adrian Glaubitz wrote: > Hold on a second, I had a copy-and-paste error, the patch needs > a slight update since __ATTR_RO(modalias) is misssing in > vio_dev_attrs. Attaching a cleaned up patch. Adrian -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer - glaubitz@debian.org `. `' Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
From: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Date: Thu, 14 Apr 2016 11:14:00 +0200
Subject: sparc: Enable autoloading for vio drivers.
Bug-Debian: https://bugs.debian.org/815977
The vio driver on sparc has been missing both modalias_show as
well as a hotplug event handler which are both required to
enable automatic loading for the vio modules. With this patch,
both sunvnet and sunvdc are loaded automatically which is
necessary when installing Debian in a sparc LDOM.
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
diff --git a/arch/sparc/kernel/vio.c b/arch/sparc/kernel/vio.c
index cb5789c..73b33b1 100644
--- a/arch/sparc/kernel/vio.c
+++ b/arch/sparc/kernel/vio.c
@@ -45,6 +45,14 @@ static const struct vio_device_id *vio_match_device(
return NULL;
}
+static int vio_hotplug(struct device *dev, struct kobj_uevent_env *env)
+{
+ const struct vio_dev *vio_dev = to_vio_dev(dev);
+
+ add_uevent_var(env, "MODALIAS=vio:T%sS%s", vio_dev->type, vio_dev->compat);
+ return 0;
+}
+
static int vio_bus_match(struct device *dev, struct device_driver *drv)
{
struct vio_dev *vio_dev = to_vio_dev(dev);
@@ -105,15 +113,25 @@ static ssize_t type_show(struct device *dev,
return sprintf(buf, "%s\n", vdev->type);
}
+static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ const struct vio_dev *vdev = to_vio_dev(dev);
+
+ return sprintf(buf, "vio:T%sS%s\n", vdev->type, vdev->compat);
+}
+
static struct device_attribute vio_dev_attrs[] = {
__ATTR_RO(devspec),
__ATTR_RO(type),
+ __ATTR_RO(modalias),
__ATTR_NULL
};
static struct bus_type vio_bus_type = {
.name = "vio",
.dev_attrs = vio_dev_attrs,
+ .uevent = vio_hotplug,
.match = vio_bus_match,
.probe = vio_device_probe,
.remove = vio_device_remove,
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