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serial: crisv10: fix invalid user-pointer check 

Drop invalid user-pointer check from TIOCGSERIAL handler.

A NULL-pointer can be valid in user space and copy_to_user() takes care
of sanity checking.

Cc: Mikael Starvik <starvik@axis.com>
Cc: linux-cris-kernel@axis.com
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2016-11-08 13:24:55 +01:00 committed by Greg Kroah-Hartman
parent 7a3f09846c
commit 68832b20c9
1 changed files with 0 additions and 2 deletions
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2
drivers/tty/serial/crisv10.c
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@ -3213,8 +3213,6 @@ get_serial_info(struct e100_serial * info,
* should set them to something else than 0.
*/
if (!retinfo)
return -EFAULT;
memset(&tmp, 0, sizeof(tmp));
tmp.type = info->type;
tmp.line = info->line;