+int of_device_uevent(struct device *dev,
+ char **envp, int num_envp, char *buffer, int buffer_size)
+{
+ struct of_device *ofdev;
+ const char *compat;
+ int i = 0, length = 0, seen = 0, cplen, sl;
+
+ if (!dev)
+ return -ENODEV;
+
+ ofdev = to_of_device(dev);
+
+ if (add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "OF_NAME=%s", ofdev->node->name))
+ return -ENOMEM;
+
+ if (add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "OF_TYPE=%s", ofdev->node->type))
+ return -ENOMEM;
+
+ /* Since the compatible field can contain pretty much anything
+ * it's not really legal to split it out with commas. We split it
+ * up using a number of environment variables instead. */
+
+ compat = of_get_property(ofdev->node, "compatible", &cplen);
+ while (compat && *compat && cplen > 0) {
+ if (add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "OF_COMPATIBLE_%d=%s", seen, compat))
+ return -ENOMEM;
+
+ sl = strlen (compat) + 1;
+ compat += sl;
+ cplen -= sl;
+ seen++;
+ }
+
+ if (add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "OF_COMPATIBLE_N=%d", seen))
+ return -ENOMEM;
+
+ /* modalias is trickier, we add it in 2 steps */
+ if (add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "MODALIAS="))
+ return -ENOMEM;
+
+ sl = of_device_get_modalias(ofdev, &buffer[length-1],
+ buffer_size-length);
+ if (sl >= (buffer_size-length))
+ return -ENOMEM;
+
+ length += sl;
+
+ envp[i] = NULL;
+
+ return 0;
+}
+
+
+EXPORT_SYMBOL(of_match_node);