On Tue, Mar 01, 2011 at 02:31:35AM +0530, Pratheesh Gangadhar wrote:

+
+		/* Register PRUSS IRQ lines */
+		p->irq = IRQ_DA8XX_EVTOUT0 + cnt;
+		p->handler = pruss_handler;
+
+		ret = uio_register_device(&dev->dev, p);
+
+		if (ret < 0)
+			goto out_free;
+	}
+
+	spin_lock_init(&lock);

That's too late. uio_register_device() enables the irq, and your spin_lock
is not ready at that time.

+	platform_set_drvdata(dev, info);
+	return 0;
+
+out_free:
+	pruss_cleanup(dev, info);
+	return ret;
+}

Thanks,
Hans