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>

1 files changed, 1 insertions, 8 deletions

diff --git a/drivers/staging/speakup/speakup_soft.c b/drivers/staging/speakup/speakup_soft.c
index a2c3dc4098b..42cdafeea35 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;