From b7bb125dc3d0ca3f72c9116525ce0f018a9844e1 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 9 Apr 2007 11:52:31 -0400 Subject: [PATCH] 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 Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/hosts.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index 38c3a291efac..bd8e7f323c69 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -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; } -- 2.20.1