[PATCH 4.9 017/109] serial: 8250_fintek: Fix rs485 disablement on invalid ioctl()

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Lukas Wunner [ Upstream commit 3236a965486ba0c6043cf2c7b51943d8b382ae29 ] This driver's ->rs485_config callback checks if SER_RS485_RTS_ON_SEND and SER_RS485_RTS_AFTER_SEND

[PATCH 4.9 017/109] serial: 8250_fintek: Fix rs485 disablement on invalid ioctl()

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Lukas Wunner [ Upstream commit 3236a965486ba0c6043cf2c7b51943d8b382ae29 ] This driver's ->rs485_config callback checks if SER_RS485_RTS_ON_SEND and SER_RS485_RTS_AFTER_SEND have the same