X-Git-Url: http://git.agner.ch/gitweb/?p=linux-drm-fsl-dcu.git;a=blobdiff_plain;f=drivers%2Feisa%2Feisa-bus.c;h=d944647c82c2e0dfc771fb286a3554569e0f487c;hp=4196137e66dea5b9e191b86b6988766985a040ba;hb=bdbf77d6707a52bdeff223d0a60df12d086d21d7;hpb=6b995751c2e851d2bc9c277b5884d0adb519e31d

diff --git a/drivers/eisa/eisa-bus.c b/drivers/eisa/eisa-bus.c
index 4196137e66de..d944647c82c2 100644
--- a/drivers/eisa/eisa-bus.c
+++ b/drivers/eisa/eisa-bus.c
@@ -128,20 +128,29 @@ static int eisa_bus_match (struct device *dev, struct device_driver *drv)
 	return 0;
 }
 
+static int eisa_bus_uevent(struct device *dev, char **envp, int num_envp,
+			   char *buffer, int buffer_size)
+{
+	struct eisa_device *edev = to_eisa_device(dev);
+	int i = 0;
+	int length = 0;
+
+	add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
+		       "MODALIAS=" EISA_DEVICE_MODALIAS_FMT, edev->id.sig);
+	envp[i] = NULL;
+	return 0;
+}
+
 struct bus_type eisa_bus_type = {
 	.name  = "eisa",
 	.match = eisa_bus_match,
+	.uevent = eisa_bus_uevent,
 };
 
 int eisa_driver_register (struct eisa_driver *edrv)
 {
-	int r;
-	
 	edrv->driver.bus = &eisa_bus_type;
-	if ((r = driver_register (&edrv->driver)) < 0)
-		return r;
-
-	return 0;
+	return driver_register (&edrv->driver);
 }
 
 void eisa_driver_unregister (struct eisa_driver *edrv)
@@ -165,6 +174,14 @@ static ssize_t eisa_show_state (struct device *dev, struct device_attribute *att
 
 static DEVICE_ATTR(enabled, S_IRUGO, eisa_show_state, NULL);
 
+static ssize_t eisa_show_modalias (struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct eisa_device *edev = to_eisa_device (dev);
+        return sprintf (buf, EISA_DEVICE_MODALIAS_FMT "\n", edev->id.sig);
+}
+
+static DEVICE_ATTR(modalias, S_IRUGO, eisa_show_modalias, NULL);
+
 static int __init eisa_init_device (struct eisa_root_device *root,
 				    struct eisa_device *edev,
 				    int slot)
@@ -209,13 +226,26 @@ static int __init eisa_init_device (struct eisa_root_device *root,
 
 static int __init eisa_register_device (struct eisa_device *edev)
 {
-	if (device_register (&edev->dev))
-		return -1;
+	int rc = device_register (&edev->dev);
+	if (rc)
+		return rc;
 
-	device_create_file (&edev->dev, &dev_attr_signature);
-	device_create_file (&edev->dev, &dev_attr_enabled);
+	rc = device_create_file (&edev->dev, &dev_attr_signature);
+	if (rc) goto err_devreg;
+	rc = device_create_file (&edev->dev, &dev_attr_enabled);
+	if (rc) goto err_sig;
+	rc = device_create_file (&edev->dev, &dev_attr_modalias);
+	if (rc) goto err_enab;
 
 	return 0;
+
+err_enab:
+	device_remove_file (&edev->dev, &dev_attr_enabled);
+err_sig:
+	device_remove_file (&edev->dev, &dev_attr_signature);
+err_devreg:
+	device_unregister(&edev->dev);
+	return rc;
 }
 
 static int __init eisa_request_resources (struct eisa_root_device *root,