X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fbase%2Fdriver.c;h=2ef5acf4368b9e8deef4440d865a87cef8d0b0a6;hb=e5a4a72d4f88f4389e9340d383ca67031d1b8536;hp=9a6537f14401df5aae7a81842c7bd7a145c2f849;hpb=d478376cb0dc9ab16a2b6e02fd8cd1174e724c64;p=linux-2.6

diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index 9a6537f144..2ef5acf436 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -217,12 +217,22 @@ static void driver_remove_groups(struct device_driver *drv,
 int driver_register(struct device_driver *drv)
 {
 	int ret;
+	struct device_driver *other;
 
 	if ((drv->bus->probe && drv->probe) ||
 	    (drv->bus->remove && drv->remove) ||
 	    (drv->bus->shutdown && drv->shutdown))
 		printk(KERN_WARNING "Driver '%s' needs updating - please use "
 			"bus_type methods\n", drv->name);
+
+	other = driver_find(drv->name, drv->bus);
+	if (other) {
+		put_driver(other);
+		printk(KERN_ERR "Error: Driver '%s' is already registered, "
+			"aborting...\n", drv->name);
+		return -EEXIST;
+	}
+
 	ret = bus_add_driver(drv);
 	if (ret)
 		return ret;