IB/ehca: Returns an error on ib_copy_to_udata() failure
authorYann Droneaud <ydroneaud@opteya.com>
Mon, 10 Mar 2014 22:06:25 +0000 (23:06 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 6 May 2014 14:55:30 +0000 (07:55 -0700)
commit39821a43f4055058fc99ec1416ecb591c6603890
tree09ba694b9321ce98097ff100075f56ec33c40bad
parent45efb79d127058a1ac02530f24380cdd6953ac47
IB/ehca: Returns an error on ib_copy_to_udata() failure

commit 5bdb0f02add5994b0bc17494f4726925ca5d6ba1 upstream.

In case of error when writing to userspace, function ehca_create_cq()
does not set an error code before following its error path.

This patch sets the error code to -EFAULT when ib_copy_to_udata()
fails.

This was caught when using spatch (aka. coccinelle)
to rewrite call to ib_copy_{from,to}_udata().

Link: https://www.gitorious.org/opteya/coccib/source/75ebf2c1033c64c1d81df13e4ae44ee99c989eba:ib_copy_udata.cocci
Link: http://marc.info/?i=cover.1394485254.git.ydroneaud@opteya.com
Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/infiniband/hw/ehca/ehca_cq.c