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/openbmc/linux/drivers/tty/serial/ |
H A D | serial_core.c | 51ad36ba Mon Jun 06 05:04:21 CDT 2022 Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> serial: return -EINVAL for non-legacy RS485 flags
In order to be add new flags more cleanly and safely, return -EINVAL from TIOCSRS485 ioctl for the flags bits which are not among the current legacy ones.
This might cause a regression for userspace as those non-flag bits do not currently trigger -EINVAL. However, it would only occur if the userspace is sending garbage bits so perhaps we'll get away with this change.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20220606100433.13793-25-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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