linux-kernel - [PATCH] leds: mc13783: fix off-by-one for checking num

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Date:	Sat, 10 Dec 2011 15:14:56 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Philippe Retornaz <philippe.retornaz@...l.ch>,
	Richard Purdie <rpurdie@...ys.net>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] leds: mc13783: fix off-by-one for checking num_leds

The LED id is begin from 0.
Thus the maximum number of leds should be MC13783_LED_MAX + 1.

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 drivers/leds/leds-mc13783.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/leds/leds-mc13783.c b/drivers/leds/leds-mc13783.c
index c61e8c4..8bc4915 100644
--- a/drivers/leds/leds-mc13783.c
+++ b/drivers/leds/leds-mc13783.c
@@ -275,7 +275,7 @@ static int __devinit mc13783_led_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	if (pdata->num_leds < 1 || pdata->num_leds > MC13783_LED_MAX) {
+	if (pdata->num_leds < 1 || pdata->num_leds > (MC13783_LED_MAX + 1)) {
 		dev_err(&pdev->dev, "Invalid led count %d\n", pdata->num_leds);
 		return -EINVAL;
 	}
-- 
1.7.5.4



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