update the patch with minor return path changes in match function:
Convert to use the class iteration api.
Signed-off-by: Dave Young <hidave.darkstar@xxxxxxxxx>
---
drivers/scsi/hosts.c | 24 +++++++++++++-----------
1 file changed, 13 insertions(+), 11 deletions(-)
diff -upr linux/drivers/scsi/hosts.c linux.new/drivers/scsi/hosts.c
--- linux/drivers/scsi/hosts.c 2008-01-16 08:43:35.000000000 +0800
+++ linux.new/drivers/scsi/hosts.c 2008-01-16 08:43:35.000000000 +0800
@@ -429,6 +429,15 @@ void scsi_unregister(struct Scsi_Host *s
}
EXPORT_SYMBOL(scsi_unregister);
+static int __scsi_host_match(struct class_device *cdev, void *data)
+{
+ struct Scsi_Host *p;
+ unsigned short *hostnum = (unsigned short *)data;
+
+ p = class_to_shost(cdev);
+ return p->host_no == *hostnum;
+}
+
/**
* scsi_host_lookup - get a reference to a Scsi_Host by host no
*
@@ -439,19 +448,12 @@ EXPORT_SYMBOL(scsi_unregister);
**/
struct Scsi_Host *scsi_host_lookup(unsigned short hostnum)
{
- struct class *class = &shost_class;
struct class_device *cdev;
- struct Scsi_Host *shost = ERR_PTR(-ENXIO), *p;
+ struct Scsi_Host *shost = ERR_PTR(-ENXIO);
- down(&class->sem);
- list_for_each_entry(cdev, &class->children, node) {
- p = class_to_shost(cdev);
- if (p->host_no == hostnum) {
- shost = scsi_host_get(p);
- break;
- }
- }
- up(&class->sem);
+ cdev = class_find_child(&shost_class, &hostnum, __scsi_host_match);
+ if (cdev)
+ shost = scsi_host_get(class_to_shost(cdev));
return shost;
}
-
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