SCSI: use the proper semaphore to protect the class lists (b7bb125d) · Commits · 戴 / test

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

+2 −2

Original line number	Diff line number	Diff line
		@@ -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;
		}

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