From 1aa8fab2acf1cb8b341131b726773fcff0abc707 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Wed, 22 Nov 2006 13:24:54 -0700 Subject: [SCSI] Make scsi_scan_host work for drivers which find their own targets If a driver can find its own targets, it can now fill in scan_finished and (optionally) scan_start in the scsi_host_template. Then, when it calls scsi_scan_host(), it will be called back (from a thread if asynchronous discovery is enabled), first to start the scan, and then at intervals to check if the scan is completed. Also make scsi_prep_async_scan and scsi_finish_async_scan static. Signed-off-by: Matthew Wilcox Signed-off-by: James Bottomley --- include/scsi/scsi_host.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'include') diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index e618e711ea57..6d8945d71c65 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -240,6 +240,24 @@ struct scsi_host_template { */ void (* target_destroy)(struct scsi_target *); + /* + * If a host has the ability to discover targets on its own instead + * of scanning the entire bus, it can fill in this function and + * call scsi_scan_host(). This function will be called periodically + * until it returns 1 with the scsi_host and the elapsed time of + * the scan in jiffies. + * + * Status: OPTIONAL + */ + int (* scan_finished)(struct Scsi_Host *, unsigned long); + + /* + * If the host wants to be called before the scan starts, but + * after the midlayer has set up ready for the scan, it can fill + * in this function. + */ + void (* scan_start)(struct Scsi_Host *); + /* * fill in this function to allow the queue depth of this host * to be changeable (on a per device basis). returns either -- cgit v1.2.2