[PATCH] ISDN: fix copy_to_user() unused result warning in isdn_ppp

[Jesper Juhl <jesper.juhl@gmail.com>]

From: Jesper Juhl <jesper.juhl@gmail.com>


Fix compile warning about copy_to_user() unused result in isdn_ppp.c
   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>

---

 drivers/isdn/i4l/isdn_ppp.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletion(-)

--- linux-2.6.16-rc4-mm1-orig/drivers/isdn/i4l/isdn_ppp.c	2006-01-03 04:21:10.000000000 +0100
+++ linux-2.6.16-rc4-mm1/drivers/isdn/i4l/isdn_ppp.c	2006-02-21 23:07:57.000000000 +0100
@@ -782,7 +782,10 @@ isdn_ppp_read(int min, struct file *file
 	is->first = b;
 
 	spin_unlock_irqrestore(&is->buflock, flags);
-	copy_to_user(buf, save_buf, count);
+	if (copy_to_user(buf, save_buf, count)) {
+		kfree(save_buf);
+		return -EFAULT;
+	}
 	kfree(save_buf);
 
 	return count;


-
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