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[ Upstream commit 79ac88655dc0551e3571ad16bdabdbe65d61553e ] Only CS7 and CS8 are supported but CSIZE is not sanitized with CS5 or CS6 to CS8. 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: 1da177e4c3f4 (Linux-2.6.12-rc2) Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20220519081808.3776-5-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>