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>

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;