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| /openbmc/linux/drivers/tty/serial/ |
| H A D | mpc52xx_uart.c | diff 7d07ada047a4e1f5ff98757ce34c0fdd13d8ec93 Mon Jul 27 11:09:33 CDT 2015 Uwe Kleine-König <u.kleine-koenig@pengutronix.de> serial: mpc52xx: let tx_empty callback return either 0 or TIOCSER_TEMT
Documenation/serial/driver requests that the tx_empty callback should
return 0 if there are still chars in the fifo or shifter or TIOCSER_TEMT
(0x01) if no character is pending to be sent.
Fix the mpc52xx serial driver to not return MPC52xx_PSC_SR_TXEMP (i.e.
0x0800) but TIOCSER_TEMT as documented.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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