tree bfbe02788e9e75be4e24285aa49539463a3539f3
parent e04ed38d4e0cd32141f723560efcc8252b0241e2
author Heiko Carstens <heiko.carstens@de.ibm.com> 1262752908 -0800
committer David S. Miller <davem@davemloft.net> 1262752908 -0800

sparc: copy_from_user() should not return -EFAULT

From: Heiko Carstens <heiko.carstens@de.ibm.com>

Callers of copy_from_user() expect it to return the number of bytes
it could not copy. In no case it is supposed to return -EFAULT.

In case of a detected buffer overflow just return the requested
length. In addition one could think of a memset that would clear
the size of the target object.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>