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staging: greybus: uart: fix invalid user-pointer check

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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.

Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2016-11-08 13:31:18 +01:00 committed by Greg Kroah-Hartman
parent 52d0744d75
commit 4dfc109c71
1 changed files with 0 additions and 3 deletions
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3
drivers/staging/greybus/uart.c
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@ -623,9 +623,6 @@ static int get_serial_info(struct gb_tty *gb_tty,
{
struct serial_struct tmp;
if (!info)
return -EINVAL;
memset(&tmp, 0, sizeof(tmp));
tmp.flags = ASYNC_LOW_LATENCY | ASYNC_SKIP_TEST;
tmp.type = PORT_16550A;