1 files changed, 9 insertions, 7 deletions

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 64620d668742..5b4d462117cf 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -319,16 +319,18 @@ static int acpi_bus_match(struct device *dev, struct device_driver *drv)
         return !acpi_match_device_ids(acpi_dev, acpi_drv->ids);
 }
 
-static int acpi_device_uevent(struct device *dev, char **envp, int num_envp,
-                              char *buffer, int buffer_size)
+static int acpi_device_uevent(struct device *dev, struct kobj_uevent_env *env)
 {
         struct acpi_device *acpi_dev = to_acpi_device(dev);
+        int len;
 
-        strcpy(buffer, "MODALIAS=");
-        if (create_modalias(acpi_dev, buffer + 9, buffer_size - 9) > 0) {
-                envp[0] = buffer;
-                envp[1] = NULL;
-        }
+        if (add_uevent_var(env, "MODALIAS="))
+                return -ENOMEM;
+        len = create_modalias(acpi_dev, &env->buf[env->buflen - 1],
+                              sizeof(env->buf) - env->buflen);
+        if (len >= (sizeof(env->buf) - env->buflen))
+                return -ENOMEM;
+        env->buflen += len;
         return 0;
 }