redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

SCSI: use the proper semaphore to protect the class lists

Browse source 
SCSI was using the incorrect lock to protect walking the list of all
devices in the class.  This patch fixes this.

Cc: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman 2007-04-09 11:52:31 -04:00
parent 49f019d66d
commit b7bb125dc3
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/scsi/hosts.c
View file

@ -435,7 +435,7 @@ struct Scsi_Host *scsi_host_lookup(unsigned short hostnum)
struct class_device *cdev;
struct Scsi_Host *shost = ERR_PTR(-ENXIO), *p;
down_read(&class->subsys.rwsem);
down(&class->sem);
list_for_each_entry(cdev, &class->children, node) {
p = class_to_shost(cdev);
if (p->host_no == hostnum) {
@ -443,7 +443,7 @@ struct Scsi_Host *scsi_host_lookup(unsigned short hostnum)
break;
}
}
up_read(&class->subsys.rwsem);
up(&class->sem);
return shost;
}