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[ Upstream commit 9b87162de8be26bf3156460b37deee6399fd0fcb ] Only CS7 and CS8 seem supported but CSIZE is not sanitized from 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/20220519081808.3776-6-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>