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USB: cdc-acm: 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. Signed-off-by: Johan Hovold <johan@kernel.org> Acked-by: Oliver Neukum <oneukum@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 0 additions and 3 deletions
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@ -877,9 +877,6 @@ static int get_serial_info(struct acm *acm, struct serial_struct __user *info)
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{
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struct serial_struct tmp;
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if (!info)
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return -EINVAL;
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memset(&tmp, 0, sizeof(tmp));
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tmp.flags = ASYNC_LOW_LATENCY;
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tmp.xmit_fifo_size = acm->writesize;
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