commit 51c44babdc19aaf882e1213325a0ba291573308f
author Wang Qing <wangqing@vivo.com> Mon Mar 01 20:01:33 2021 +0800
committer Heiko Carstens <hca@linux.ibm.com> Mon Mar 08 10:46:29 2021 +0100
tree e672a65cdca9dc3cfa5bdb5ece9dbf63e58afa00
parent 46b635b6abcf2ee106d36f2e84e942f56030c8f5

s390/cio: return -EFAULT if copy_to_user() fails

The copy_to_user() function returns the number of bytes remaining to be
copied, but we want to return -EFAULT if the copy doesn't complete.

Fixes: e01bcdd61320 ("vfio: ccw: realize VFIO_DEVICE_GET_REGION_INFO ioctl")
Signed-off-by: Wang Qing <wangqing@vivo.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Link: https://lore.kernel.org/r/1614600093-13992-1-git-send-email-wangqing@vivo.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>