dmaengine i.MX ipu: clk_prepare/unprepare clock

Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

drivers/dma/ipu/ipu_idmac.c

@@ -1715,7 +1715,7 @@ static int __init ipu_probe(struct platform_device *pdev)
 	}
 
 	/* Make sure IPU HSP clock is running */
-	clk_enable(ipu_data.ipu_clk);
+	clk_prepare_enable(ipu_data.ipu_clk);
 
 	/* Disable all interrupts */
 	idmac_write_ipureg(&ipu_data, 0, IPU_INT_CTRL_1);
@@ -1747,7 +1747,7 @@ static int __init ipu_probe(struct platform_device *pdev)
 err_idmac_init:
 err_attach_irq:
 	ipu_irq_detach_irq(&ipu_data, pdev);
-	clk_disable(ipu_data.ipu_clk);
+	clk_disable_unprepare(ipu_data.ipu_clk);
 	clk_put(ipu_data.ipu_clk);
 err_clk_get:
 	iounmap(ipu_data.reg_ic);
@@ -1765,7 +1765,7 @@ static int __exit ipu_remove(struct platform_device *pdev)
 
 	ipu_idmac_exit(ipu);
 	ipu_irq_detach_irq(ipu, pdev);
-	clk_disable(ipu->ipu_clk);
+	clk_disable_unprepare(ipu->ipu_clk);
 	clk_put(ipu->ipu_clk);
 	iounmap(ipu->reg_ic);
 	iounmap(ipu->reg_ipu);