From: Peter Huewe <peterhuewe@gmx.de>
Date: Mon, 6 Jun 2011 19:32:32 +0000 (+0200)
Subject: staging: speakup: Use kstrtoul_from_user
X-Git-Tag: v3.1-rc1~232^2~494
X-Git-Url: http://git.cascardo.eti.br/?a=commitdiff_plain;h=6263ba551985ad7201d0e7f36672c7a0f57f61f4;p=cascardo%2Flinux.git

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@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/staging/speakup/speakup_soft.c b/drivers/staging/speakup/speakup_soft.c
index a2c3dc4098b9..42cdafeea35e 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;