+ ip2-return-efault-on-copy_to_user-errors.patch added to -mm tree

+ ip2-return-efault-on-copy_to_user-errors.patch added to -mm tree

[akpm]

The patch titled
     ip2: return -EFAULT on copy_to_user errors
has been added to the -mm tree.  Its filename is
     ip2-return-efault-on-copy_to_user-errors.patch

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*** Remember to use Documentation/SubmitChecklist when testing your code ***

See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this

The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/

------------------------------------------------------
Subject: ip2: return -EFAULT on copy_to_user errors
From: Dan Carpenter <error27@gmail.com>

copy_to_user() returns the number of bytes remaining but we want to return
a negative error code on errors.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Cc: "Michael H. Warfield" <mhw@wittsend.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/char/ip2/ip2main.c |    2 ++
 1 file changed, 2 insertions(+)

diff -puN drivers/char/ip2/ip2main.c~ip2-return-efault-on-copy_to_user-errors drivers/char/ip2/ip2main.c
--- a/drivers/char/ip2/ip2main.c~ip2-return-efault-on-copy_to_user-errors
+++ a/drivers/char/ip2/ip2main.c
@@ -2930,6 +2930,8 @@ ip2_ipl_ioctl (struct file *pFile, UINT 
 				if ( pCh )
 				{
 					rc = copy_to_user(argp, pCh, sizeof(i2ChanStr));
+					if (rc)
+						rc = -EFAULT;
 				} else {
 					rc = -ENODEV;
 				}
_

Patches currently in -mm which might be from error27@gmail.com are

origin.patch
linux-next.patch
ip2-remove-unneeded-null-check.patch
ip2-return-efault-on-copy_to_user-errors.patch