[PATCH 5/6] scsi : use class iteration api

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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;
 }
-
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [SCSI Target Devel]     [Linux SCSI Target Infrastructure]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Linux IIO]     [Samba]     [Device Mapper]
  Powered by Linux