X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fscsi%2Fscsi_sysfs.c;h=ed720863ab97fe52cdc0947d19b594e40b954b11;hb=92d7f7b0cde3ad2260e7462b40867b57efd49851;hp=c275dcac3f18b7b4abc1bd984cb1601de3f0a770;hpb=b0138a6cb7923a997d278b47c176778534d1095b;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index c275dcac3f1..ed720863ab9 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -276,38 +276,56 @@ static int scsi_bus_match(struct device *dev, struct device_driver *gendrv)
 	return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0;
 }
 
+static int scsi_bus_uevent(struct device *dev, char **envp, int num_envp,
+		           char *buffer, int buffer_size)
+{
+	struct scsi_device *sdev = to_scsi_device(dev);
+	int i = 0;
+	int length = 0;
+
+	add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
+		       "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type);
+	envp[i] = NULL;
+	return 0;
+}
+
 static int scsi_bus_suspend(struct device * dev, pm_message_t state)
 {
+	struct device_driver *drv = dev->driver;
 	struct scsi_device *sdev = to_scsi_device(dev);
-	struct scsi_host_template *sht = sdev->host->hostt;
 	int err;
 
 	err = scsi_device_quiesce(sdev);
 	if (err)
 		return err;
 
-	if (sht->suspend)
-		err = sht->suspend(sdev, state);
+	if (drv && drv->suspend) {
+		err = drv->suspend(dev, state);
+		if (err)
+			return err;
+	}
 
-	return err;
+	return 0;
 }
 
 static int scsi_bus_resume(struct device * dev)
 {
+	struct device_driver *drv = dev->driver;
 	struct scsi_device *sdev = to_scsi_device(dev);
-	struct scsi_host_template *sht = sdev->host->hostt;
 	int err = 0;
 
-	if (sht->resume)
-		err = sht->resume(sdev);
+	if (drv && drv->resume)
+		err = drv->resume(dev);
 
 	scsi_device_resume(sdev);
+
 	return err;
 }
 
 struct bus_type scsi_bus_type = {
         .name		= "scsi",
         .match		= scsi_bus_match,
+	.uevent		= scsi_bus_uevent,
 	.suspend	= scsi_bus_suspend,
 	.resume		= scsi_bus_resume,
 };
@@ -452,10 +470,22 @@ store_rescan_field (struct device *dev, struct device_attribute *attr, const cha
 }
 static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field);
 
+static void sdev_store_delete_callback(struct device *dev)
+{
+	scsi_remove_device(to_scsi_device(dev));
+}
+
 static ssize_t sdev_store_delete(struct device *dev, struct device_attribute *attr, const char *buf,
 				 size_t count)
 {
-	scsi_remove_device(to_scsi_device(dev));
+	int rc;
+
+	/* An attribute cannot be unregistered by one of its own methods,
+	 * so we have to use this roundabout approach.
+	 */
+	rc = device_schedule_callback(dev, sdev_store_delete_callback);
+	if (rc)
+		count = rc;
 	return count;
 };
 static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete);
@@ -535,6 +565,14 @@ show_sdev_iostat(iorequest_cnt);
 show_sdev_iostat(iodone_cnt);
 show_sdev_iostat(ioerr_cnt);
 
+static ssize_t
+sdev_show_modalias(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct scsi_device *sdev;
+	sdev = to_scsi_device(dev);
+	return snprintf (buf, 20, SCSI_DEVICE_MODALIAS_FMT "\n", sdev->type);
+}
+static DEVICE_ATTR(modalias, S_IRUGO, sdev_show_modalias, NULL);
 
 /* Default template for device attributes.  May NOT be modified */
 static struct device_attribute *scsi_sysfs_sdev_attrs[] = {
@@ -554,6 +592,7 @@ static struct device_attribute *scsi_sysfs_sdev_attrs[] = {
 	&dev_attr_iorequest_cnt,
 	&dev_attr_iodone_cnt,
 	&dev_attr_ioerr_cnt,
+	&dev_attr_modalias,
 	NULL
 };