[PATCH] scsi_set_host_offline (resend)

Mike Anderson
2003-03-25T10:04:01Z

This is a resend of a previous patch for the scsi_set_host_offline
interface.

-andmike
--
Michael Anderson
andmike@us.ibm.com

=====
name: 00_scsi_set_host_offline-2.diff
version: 2003-03-25.02:01:33-0800
against: 2.5.66

scsi.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
scsi.h | 1 +
2 files changed, 51 insertions(+)

=====
===== drivers/scsi/scsi.c 1.99 vs edited =====
--- 1.99/drivers/scsi/scsi.c Mon Mar 3 10:48:16 2003
+++ edited/drivers/scsi/scsi.c Tue Mar 25 01:45:00 2003
@@ -1295,6 +1295,37 @@
}

/**
+ * scsi_host_for_each_device - call function for each host child device
+ * @shost: struct Scsi_Host to interate over.
+ * @data: void pointer argumnet passed to called function.
+ * @fn: function to call for each device.
+ *
+ **/
+static int scsi_host_for_each_device(struct Scsi_Host *shost,
+ void * data, int (*fn)(struct scsi_device *, void *))
+{
+ struct list_head *lh;
+ struct scsi_device *sdev;
+ unsigned long flags;
+ int error = 0;
+
+ spin_lock_irqsave(shost->host_lock, flags);
+ for (lh = shost->my_devices.next;
+ (!error) && (lh != &shost->my_devices);) {
+ sdev = list_entry(lh, struct scsi_device, siblings);
+ scsi_device_get(sdev);
+ spin_unlock_irqrestore(shost->host_lock, flags);
+ error = fn(sdev, data);
+ spin_lock_irqsave(shost->host_lock, flags);
+ lh = lh->next;
+ scsi_device_put(sdev);
+ }
+ spin_unlock_irqrestore(shost->host_lock, flags);
+
+ return error;
+}
+
+/**
* scsi_set_device_offline - set scsi_device offline
* @sdev: pointer to struct scsi_device to offline.
*
@@ -1333,6 +1364,25 @@
} else {
/* FIXME: Send online state change hotplug event */
}
+}
+
+/**
+ * scsi_set_device_offline - wrapper.
+ **/
+static int __scsi_set_device_offline(struct scsi_device *sdev, void *data)
+{
+ scsi_set_device_offline(sdev);
+ return 0;
+}
+
+/**
+ * scsi_set_host_offline - set all scsi_devices on a host offline
+ * @shost: pointer to struct Scsi_Host.
+ *
+ **/
+void scsi_set_host_offline(struct Scsi_Host *shost)
+{
+ scsi_host_for_each_device(shost, NULL, __scsi_set_device_offline);
}

/*
===== drivers/scsi/scsi.h 1.67 vs edited =====
--- 1.67/drivers/scsi/scsi.h Fri Mar 14 16:35:26 2003
+++ edited/drivers/scsi/scsi.h Mon Mar 24 11:24:59 2003
@@ -436,6 +436,7 @@
extern void scsi_slave_detach(struct scsi_device *);
extern int scsi_device_get(struct scsi_device *);
extern void scsi_device_put(struct scsi_device *);
+extern void scsi_set_host_offline(struct Scsi_Host *);
extern void scsi_set_device_offline(struct scsi_device *);
extern void scsi_done(Scsi_Cmnd * SCpnt);
extern void scsi_finish_command(Scsi_Cmnd *);