tree e672a65cdca9dc3cfa5bdb5ece9dbf63e58afa00
parent 46b635b6abcf2ee106d36f2e84e942f56030c8f5
author Wang Qing <wangqing@vivo.com> 1614600093 +0800
committer Heiko Carstens <hca@linux.ibm.com> 1615196789 +0100

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>