Dan Carpenter b4ef52d26a drm: return -EFAULT if copy_to_user() fails ...

[ Upstream commit 74b67efa8d ]

The copy_from_user() function returns the number of bytes remaining
to be copied but we want to return a negative error code.  Otherwise
the callers treat it as a successful copy.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190618131843.GA29463@mwanda
Signed-off-by: Sasha Levin <sashal@kernel.org>

2019-07-14 08:09:45 +02:00

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