linux-kernel - [PATCH 1/3] device: property: add helpers to count items in string arrays

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Message-Id: <20200908125813.8809-2-brgl@bgdev.pl>
Date:   Tue,  8 Sep 2020 14:58:11 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Kent Gibson <warthog618@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-acpi@...r.kernel.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: [PATCH 1/3] device: property: add helpers to count items in string arrays

From: Bartosz Golaszewski <bgolaszewski@...libre.com>

Instead of doing the following:

    count = device_property_read_string_array(dev, propname, NULL, 0);

Let's provide inline helpers with hardcoded arguments for counting
strings in property arrays.

Suggested-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
---
 include/linux/property.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/include/linux/property.h b/include/linux/property.h
index 9f805c442819..1fa5e250a8ea 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -170,6 +170,12 @@ static inline int device_property_count_u64(struct device *dev, const char *prop
 	return device_property_read_u64_array(dev, propname, NULL, 0);
 }
 
+static inline int device_property_count_strings(struct device *dev,
+						const char *propname)
+{
+	return device_property_read_string_array(dev, propname, NULL, 0);
+}
+
 static inline bool fwnode_property_read_bool(const struct fwnode_handle *fwnode,
 					     const char *propname)
 {
@@ -224,6 +230,13 @@ static inline int fwnode_property_count_u64(const struct fwnode_handle *fwnode,
 	return fwnode_property_read_u64_array(fwnode, propname, NULL, 0);
 }
 
+static inline int
+fwnode_property_count_strings(const struct fwnode_handle *fwnode,
+			      const char *propname)
+{
+	return fwnode_property_read_string_array(fwnode, propname, NULL, 0);
+}
+
 struct software_node;
 
 /**
-- 
2.26.1