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[ Upstream commit fd63031b8c0763addcecdefe0e0c59d49646204e ] Only CS7 and CS8 seem supported but CSIZE is not sanitized to CS8 in the default: block. Set CSIZE correctly so that userspace knows the effective value. Incorrect CSIZE also results in miscalculation of the frame bits in tty_get_char_size() or in its predecessor where the roughly the same code is directly within uart_update_timeout(). Fixes: 5930cb3511df (serial: driver for Conexant Digicolor USART) Acked-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20220519081808.3776-3-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>