From: Fabio Estevam <fabio.estevam@freescale.com>
Date: Tue, 21 May 2013 14:24:44 +0000 (-0300)
Subject: staging: imx-drm: imx-tve: Check the return value of 'regulator_enable()'
X-Git-Tag: firefly_0821_release~3680^2~427^2~2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c7b0cf3e712775e8e2015c2f4582864159540be6;p=firefly-linux-kernel-4.4.55.git

staging: imx-drm: imx-tve: Check the return value of 'regulator_enable()'

Since commit c8801a8 (regulator: core: Mark all get and enable calls as
__must_check) we need to check the value returned by 'regulator_enable()'.

Do this check to get rid of the following build warning:

drivers/staging/imx-drm/imx-tve.c: In function 'imx_tve_probe':
drivers/staging/imx-drm/imx-tve.c:671:19: warning: ignoring return value of 'regulator_enable', declared with attribute warn_unused_result [-Wunused-result]

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

diff --git a/drivers/staging/imx-drm/imx-tve.c b/drivers/staging/imx-drm/imx-tve.c
index ac1634464407..03892de9bd7e 100644
--- a/drivers/staging/imx-drm/imx-tve.c
+++ b/drivers/staging/imx-drm/imx-tve.c
@@ -670,7 +670,9 @@ static int imx_tve_probe(struct platform_device *pdev)
 	tve->dac_reg = devm_regulator_get(&pdev->dev, "dac");
 	if (!IS_ERR(tve->dac_reg)) {
 		regulator_set_voltage(tve->dac_reg, 2750000, 2750000);
-		regulator_enable(tve->dac_reg);
+		ret = regulator_enable(tve->dac_reg);
+		if (ret)
+			return ret;
 	}
 
 	tve->clk = devm_clk_get(&pdev->dev, "tve");