linux-kernel - [PATCH] staging/speakup: Use kstrtoul_from

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Date:	Mon,  6 Jun 2011 21:32:32 +0200
From:	Peter Huewe <peterhuewe@....de>
To:	Greg Kroah-Hartman <gregkh@...e.de>
Cc:	William Hubbs <w.d.hubbs@...il.com>,
	Christopher Brannon <chris@...-brannons.com>,
	Samuel Thibault <samuel.thibault@...-lyon.org>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
	Peter Huewe <peterhuewe@....de>
Subject: [PATCH] staging/speakup: Use kstrtoul_from_user

This patch replaces the code for getting an unsigned long from a
userspace buffer by a simple call to kstroul_from_user.
This makes it easier to read and less error prone.

Kernel Version: staging of 20110606

Signed-off-by: Peter Huewe <peterhuewe@....de>
---
 drivers/staging/speakup/speakup_soft.c |    9 +--------
 1 files changed, 1 insertions(+), 8 deletions(-)

diff --git a/drivers/staging/speakup/speakup_soft.c b/drivers/staging/speakup/speakup_soft.c
index a2c3dc4..42cdafe 100644
--- a/drivers/staging/speakup/speakup_soft.c
+++ b/drivers/staging/speakup/speakup_soft.c
@@ -273,15 +273,8 @@ static ssize_t softsynth_write(struct file *fp, const char *buf, size_t count,
 {
 	unsigned long supplied_index = 0;
 	int converted;
-	char indbuf[5];
-	if (count >= sizeof(indbuf))
-		return -EINVAL;
 
-	if (copy_from_user(indbuf, buf, count))
-		return -EFAULT;
-	indbuf[count] = '\0';
-
-	converted = strict_strtoul(indbuf, 0, &supplied_index);
+	converted = kstrtoul_from_user(buf, count, 0, &supplied_index);
 
 	if (converted < 0)
 		return converted;
-- 
1.7.3.4

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