[PATCH] ISDN: fix copy_to_user() unused result warning in isdn_ppp
authorJesper Juhl <jesper.juhl@gmail.com>
Sat, 25 Mar 2006 11:07:02 +0000 (03:07 -0800)
committerLinus Torvalds <torvalds@g5.osdl.org>
Sat, 25 Mar 2006 16:22:51 +0000 (08:22 -0800)
   drivers/isdn/i4l/isdn_ppp.c:785: warning: ignoring return value of `copy_to_user', declared with attribute warn_unused_result

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
drivers/isdn/i4l/isdn_ppp.c

index 1a19a0f894288907c30ea2fbb91790db3d67a584..b9fed8a3bcc650036e170719ac9d0320a602e4ac 100644 (file)
@@ -782,7 +782,8 @@ isdn_ppp_read(int min, struct file *file, char __user *buf, int count)
        is->first = b;
 
        spin_unlock_irqrestore(&is->buflock, flags);
-       copy_to_user(buf, save_buf, count);
+       if (copy_to_user(buf, save_buf, count))
+               count = -EFAULT;
        kfree(save_buf);
 
        return count;