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Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/kernel/vio.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index 97082a4203a..71a6addf9f7 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -21,6 +21,7 @@
#include <asm/iommu.h>
#include <asm/dma.h>
#include <asm/vio.h>
+#include <asm/prom.h>
static const struct vio_device_id *vio_match_device(
const struct vio_device_id *, const struct vio_dev *);
@@ -265,7 +266,33 @@ static int vio_bus_match(struct device *dev, struct device_driver *drv)
return (ids != NULL) && (vio_match_device(ids, vio_dev) != NULL);
}
+static int vio_hotplug(struct device *dev, char **envp, int num_envp,
+ char *buffer, int buffer_size)
+{
+ const struct vio_dev *vio_dev = to_vio_dev(dev);
+ char *cp;
+ int length;
+
+ if (!num_envp)
+ return -ENOMEM;
+
+ if (!vio_dev->dev.platform_data)
+ return -ENODEV;
+ cp = (char *)get_property(vio_dev->dev.platform_data, "compatible", &length);
+ if (!cp)
+ return -ENODEV;
+
+ envp[0] = buffer;
+ length = scnprintf(buffer, buffer_size, "MODALIAS=vio:T%sS%s",
+ vio_dev->type, cp);
+ if (buffer_size - length <= 0)
+ return -ENOMEM;
+ envp[1] = NULL;
+ return 0;
+}
+
struct bus_type vio_bus_type = {
.name = "vio",
+ .hotplug = vio_hotplug,
.match = vio_bus_match,
};