From: Fabio Estevam <fabio.estevam@freescale.com>
Date: Mon, 19 Aug 2013 00:40:02 +0000 (-0300)
Subject: imx-drm: ipu-di: Check the return value from clk_prepare_enable()
X-Git-Tag: firefly_0821_release~176^2~5471^2~240
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=85d0b7809b912b566c3d19c5c96e044c0698ce2d;p=firefly-linux-kernel-4.4.55.git

imx-drm: ipu-di: Check the return value from clk_prepare_enable()

clk_prepare_enable() may fail, so let's check its return value and propagate it
in the case of error.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/imx-drm/ipu-v3/ipu-di.c b/drivers/staging/imx-drm/ipu-v3/ipu-di.c
index 0b6806e2069c..948a49b289ef 100644
--- a/drivers/staging/imx-drm/ipu-v3/ipu-di.c
+++ b/drivers/staging/imx-drm/ipu-v3/ipu-di.c
@@ -654,7 +654,9 @@ EXPORT_SYMBOL_GPL(ipu_di_init_sync_panel);
 
 int ipu_di_enable(struct ipu_di *di)
 {
-	clk_prepare_enable(di->clk_di_pixel);
+	int ret = clk_prepare_enable(di->clk_di_pixel);
+	if (ret)
+		return ret;
 
 	ipu_module_enable(di->ipu, di->module);