linux-kernel - [PATCH] PM / OPP: Fix parsing of opp-microvolt and opp-microamp properties

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Date:	Wed, 16 Dec 2015 16:41:40 +0100
From:	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
To:	Viresh Kumar <viresh.kumar@...aro.org>,
	Lee Jones <lee.jones@...aro.org>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Cc:	Stephen Boyd <sboyd@...eaurora.org>, nm@...com,
	linaro-kernel@...ts.linaro.org, linux-pm@...r.kernel.org,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Dmitry Torokhov <dtor@...omium.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Len Brown <len.brown@...el.com>,
	open list <linux-kernel@...r.kernel.org>,
	Pavel Machek <pavel@....cz>, Shawn Guo <shawnguo@...nel.org>,
	linux-samsung-soc@...r.kernel.org
Subject: [PATCH] PM / OPP: Fix parsing of opp-microvolt and opp-microamp
 properties

Commit 01fb4d3c39d3 ("PM / OPP: Parse 'opp-<prop>-<name>'
bindings") broke support for parsing standard opp-microvolt and
opp-microamp properties.  Fix it by setting 'name' string to
proper value for !dev_opp->prop_name cases.

Cc: Viresh Kumar <viresh.kumar@...aro.org>
Cc: Lee Jones <lee.jones@...aro.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Fixes: 01fb4d3c39d3 ("PM / OPP: Parse 'opp-<prop>-<name> 'bindings")
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
---
This fixes Exynos4x12 cpufreq-dt support regression present in
linux-pm/linux-next tree.  Rafael, please apply.  Thank you.

 drivers/base/power/opp/core.c |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

Index: b/drivers/base/power/opp/core.c
===================================================================
--- a/drivers/base/power/opp/core.c	2015-12-16 16:10:13.509171420 +0100
+++ b/drivers/base/power/opp/core.c	2015-12-16 16:21:18.385183902 +0100
@@ -806,11 +806,11 @@ static int opp_parse_supplies(struct dev
 	struct property *prop = NULL;
 	char name[NAME_MAX];
 
+	sprintf(name, "opp-microvolt-%s", dev_opp->prop_name);
+
 	/* Search for "opp-microvolt-<name>" */
-	if (dev_opp->prop_name) {
-		sprintf(name, "opp-microvolt-%s", dev_opp->prop_name);
+	if (dev_opp->prop_name)
 		prop = of_find_property(opp->np, name, NULL);
-	}
 
 	if (!prop) {
 		/* Search for "opp-microvolt" */
@@ -848,10 +848,10 @@ static int opp_parse_supplies(struct dev
 
 	/* Search for "opp-microamp-<name>" */
 	prop = NULL;
-	if (dev_opp->prop_name) {
-		sprintf(name, "opp-microamp-%s", dev_opp->prop_name);
+	sprintf(name, "opp-microamp-%s", dev_opp->prop_name);
+
+	if (dev_opp->prop_name)
 		prop = of_find_property(opp->np, name, NULL);
-	}
 
 	if (!prop) {
 		/* Search for "opp-microamp" */

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