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| author | Dave Young <hidave.darkstar@gmail.com> | 2008-01-22 14:01:34 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-01-24 20:40:45 -0800 |
| commit | 9c7701088a61cc0cf8a6e1c68d1e74e3cc2ee0b7 (patch) | |
| tree | 477def1de51833a3d8c1b9e4b080b52fd51d51ab /drivers/scsi/hosts.c | |
| parent | 71da890509fec13d54329485bf5e4ac16b992bb6 (diff) | |
| download | linux-9c7701088a61cc0cf8a6e1c68d1e74e3cc2ee0b7.tar.bz2 | |
scsi: use class iteration api
Convert to use the class iteration api.
Signed-off-by: Dave Young <hidave.darkstar@gmail.com>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/scsi/hosts.c')
| -rw-r--r-- | drivers/scsi/hosts.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index 24271a871b8c..6325115e5b3d 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -429,6 +429,15 @@ void scsi_unregister(struct Scsi_Host *shost) } 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; } |