From: Laxman Dewangan <ldewangan@nvidia.com>
Date: Sun, 20 May 2012 16:18:49 +0000 (+0530)
Subject: regulator: tps65910: dt: support when "regulators" node found
X-Git-Tag: v3.5-rc1~177^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=92ab953bd6477b816e8ddd2cf9eaed063332013a;p=profile%2Fcommon%2Fkernel-common.git

regulator: tps65910: dt: support when "regulators" node found

The device tree binding for the tps65910 is described as:
	tps65911 {
		reg = <0x2d>
		:::::::::
		regulators {
			compatible = "ti,tps65911";
			ldo1_reg: ldo1 {
				/** regulator entry */
			};

			ldo2_reg: ldo2 {
				/** regulator entry */
			};
			::::::::::
		};
	};

Support the regulators functionality only when there is "regulators"
child node available for tps65910.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---

diff --git a/drivers/regulator/tps65910-regulator.c b/drivers/regulator/tps65910-regulator.c
index 11af48e..8b31f07 100644
--- a/drivers/regulator/tps65910-regulator.c
+++ b/drivers/regulator/tps65910-regulator.c
@@ -1090,6 +1090,10 @@ static struct tps65910_board *tps65910_parse_dt_reg_data(
 	}
 
 	regulators = of_find_node_by_name(np, "regulators");
+	if (!regulators) {
+		dev_err(&pdev->dev, "regulator node not found\n");
+		return NULL;
+	}
 
 	switch (tps65910_chip_id(tps65910)) {
 	case TPS65910: