From 9e0d30e20d399bf048ffd478b70fb6b67dbcc217 Mon Sep 17 00:00:00 2001
From: Edward Tomasz Napierala <trasz@FreeBSD.org>
Date: Tue, 2 Apr 2013 09:38:04 +0000
Subject: [PATCH] Fix panic in the error path caused by recursive acquisition
 of XPT topology lock.

Reviewed by:	ken
---
 sys/cam/cam_periph.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/cam/cam_periph.c b/sys/cam/cam_periph.c
index fa4fa04ccc46..55c90dea0b00 100644
--- a/sys/cam/cam_periph.c
+++ b/sys/cam/cam_periph.c
@@ -218,9 +218,9 @@ cam_periph_alloc(periph_ctor_t *periph_ctor,
 	}
 	if (*p_drv == NULL) {
 		printf("cam_periph_alloc: invalid periph name '%s'\n", name);
+		xpt_unlock_buses();
 		xpt_free_path(periph->path);
 		free(periph, M_CAMPERIPH);
-		xpt_unlock_buses();
 		return (CAM_REQ_INVALID);
 	}
 	periph->unit_number = camperiphunit(*p_drv, path_id, target_id, lun_id);