linux-kernel - [PATCH] driver core: property: Update fwnode_property_read_string

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Message-ID: <1670743.YY8G2nYXVm@vostro.rjw.lan>
Date:	Tue, 24 Mar 2015 01:40:13 +0100
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc:	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>
Subject: [PATCH] driver core: property: Update fwnode_property_read_string_array()

From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

Commit 5c0acf3b4f96 (driver core: Add comments about returning array
counts) forgot to update fwnode_property_read_string_array() along
the lines of device_property_read_string_array(), although it did
change the kerneldoc comment of it.  Fix that.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 drivers/base/property.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

Index: linux-pm/drivers/base/property.c
===================================================================
--- linux-pm.orig/drivers/base/property.c
+++ linux-pm/drivers/base/property.c
@@ -347,8 +347,10 @@ int fwnode_property_read_string_array(st
 				      size_t nval)
 {
 	if (is_of_node(fwnode))
-		return of_property_read_string_array(of_node(fwnode), propname,
-						     val, nval);
+		return val ?
+			of_property_read_string_array(of_node(fwnode), propname,
+						      val, nval) :
+			of_property_count_strings(of_node(fwnode), propname);
 	else if (is_acpi_node(fwnode))
 		return acpi_dev_prop_read(acpi_node(fwnode), propname,
 					  DEV_PROP_STRING, val, nval);

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