| From foo@baz Tue Apr 9 12:12:43 2002 |
| Date: Mon, 9 Apr 2007 11:52:31 -0400 (EDT) |
| To: Greg KH <greg@kroah.com> |
| From: Greg Kroah-Hartman <gregkh@suse.de> |
| Subject: SCSI: use the proper semaphore to protect the class lists |
| |
| 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> |
| |
| --- |
| drivers/scsi/hosts.c | 4 ++-- |
| 1 file changed, 2 insertions(+), 2 deletions(-) |
| |
| --- a/drivers/scsi/hosts.c |
| +++ b/drivers/scsi/hosts.c |
| @@ -435,7 +435,7 @@ struct Scsi_Host *scsi_host_lookup(unsig |
| 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(unsig |
| break; |
| } |
| } |
| - up_read(&class->subsys.rwsem); |
| + up(&class->sem); |
| |
| return shost; |
| } |
