[PATCH 06/26] serial: Fix send_xchar() handlers

START_CHAR() & STOP_CHAR() can be disabled if set to '\0' (__DISABLED_CHAR). UART drivers which define a send_xchar() handler must not transmit __DISABLED_CHAR. Document requirement. Affected drivers: sunsab sunhv cc: David S. Miller cc: Signed-off-by: Peter Hurley ---

[PATCH 06/26] serial: Fix send_xchar() handlers

START_CHAR() STOP_CHAR() can be disabled if set to '\0' (__DISABLED_CHAR). UART drivers which define a send_xchar() handler must not transmit __DISABLED_CHAR. Document requirement. Affected drivers: sunsab sunhv cc: David S. Miller da...@davemloft.net cc: sparcli...@vger.kernel.org