diff --git a/drivers/scsi/pcmcia/sym53c500_cs.c b/drivers/scsi/pcmcia/sym53c500_cs.c
index 8457d0d..1667da9 100644
--- a/drivers/scsi/pcmcia/sym53c500_cs.c
+++ b/drivers/scsi/pcmcia/sym53c500_cs.c
@@ -627,7 +627,9 @@
 	int port_base = SCpnt->device->host->io_port;
 
 	DEB(printk("SYM53C500_host_reset called\n"));
+	spin_lock_irq(SCpnt->device->host->host_lock);
 	SYM53C500_int_host_reset(port_base);
+	spin_unlock_irq(SCpnt->device->host->host_lock);
 
 	return SUCCESS;
 }