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

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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: e01bcdd613 ("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>

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Wang Qing 2021-03-01 20:01:33 +08:00 • committed by Heiko Carstens

parent 46b635b6ab

commit 51c44babdc

1 changed files with 2 additions and 2 deletions

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drivers/s390/cio/vfio_ccw_ops.c

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