linux-kernel - [PATCH 1/3] leds: leds-lp5523: modify the way of setting led device name

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Date:	Fri, 17 Dec 2010 12:19:19 +0200
From:	Samu Onkalo <samu.p.onkalo@...ia.com>
To:	rpurdie@...ys.net, akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org, ilkka.koskinen@...ia.com,
	arun.murthy@...ricsson.com, ankur.vaish@...ricsson.com
Subject: [PATCH 1/3] leds: leds-lp5523: modify the way of setting led device name

Currently all leds channels begins with string lp5523.
Patch adds a possibility to provide name via platform
data. This makes it possible to have several
chips without overlapping sysfs names.

Signed-off-by: Samu Onkalo <samu.p.onkalo@...ia.com>
---
 drivers/leds/leds-lp5523.c  |    3 ++-
 include/linux/leds-lp5523.h |    1 +
 2 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
index 0cc4ead..6cb4160 100644
--- a/drivers/leds/leds-lp5523.c
+++ b/drivers/leds/leds-lp5523.c
@@ -870,7 +870,8 @@ static int __init lp5523_init_led(struct lp5523_led *led, struct device *dev,
 			return -EINVAL;
 		}
 
-		snprintf(name, 32, "lp5523:channel%d", chan);
+		snprintf(name, sizeof(name), "%s:channel%d",
+			pdata->label ?: "lp5523", chan);
 
 		led->cdev.name = name;
 		led->cdev.brightness_set = lp5523_set_brightness;
diff --git a/include/linux/leds-lp5523.h b/include/linux/leds-lp5523.h
index 7967476..2694289 100644
--- a/include/linux/leds-lp5523.h
+++ b/include/linux/leds-lp5523.h
@@ -42,6 +42,7 @@ struct lp5523_platform_data {
 	int	(*setup_resources)(void);
 	void	(*release_resources)(void);
 	void	(*enable)(bool state);
+	const	char *label;
 };
 
 #endif /* __LINUX_LP5523_H */
-- 
1.7.0.4

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