From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Anderson Subject: [PATCH] scsi_set_host_offline (resend) Date: Tue, 25 Mar 2003 02:07:04 -0800 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <20030325100704.GC3868@beaverton.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from westrelay01.boulder.ibm.com (westrelay01.boulder.ibm.com [9.17.195.10]) by e32.co.us.ibm.com (8.12.8/8.12.2) with ESMTP id h2PA41Tr057344 for ; Tue, 25 Mar 2003 05:04:01 -0500 Received: from hmsbounty (sig-9-65-18-25.mts.ibm.com [9.65.18.25]) by westrelay01.boulder.ibm.com (8.12.8/NCO/VER6.5) with ESMTP id h2PA53k3036416 for ; Tue, 25 Mar 2003 03:05:04 -0700 Content-Disposition: inline List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org 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 *);