diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-05-09 23:21:59 +0100 |
|---|---|---|
| committer | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-05-09 23:21:59 +0100 |
| commit | 05ab3014636ff60a319d37cdf37dca594b015eec (patch) | |
| tree | d9d948a5ecd5e10cd511ebca328df2ef08d5e076 /include/linux/serial_core.h | |
| parent | 88d7bd8cb9eb8d64bf7997600b0d64f7834047c5 (diff) | |
| download | lwn-05ab3014636ff60a319d37cdf37dca594b015eec.tar.gz lwn-05ab3014636ff60a319d37cdf37dca594b015eec.zip | |
[PATCH] Serial: Add uart_insert_char()
Add uart_insert_char(), which handles inserting characters into the
flip buffer. This helper function handles the correct semantics
for handling overrun in addition to inserting normal characters.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Diffstat (limited to 'include/linux/serial_core.h')
| -rw-r--r-- | include/linux/serial_core.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index c3fb5984f250..d6025af7efac 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -479,6 +479,25 @@ uart_handle_cts_change(struct uart_port *port, unsigned int status) } } +#include <linux/tty_flip.h> + +static inline void +uart_insert_char(struct uart_port *port, unsigned int status, + unsigned int overrun, unsigned int ch, unsigned int flag) +{ + struct tty_struct *tty = port->info->tty; + + if ((status & port->ignore_status_mask & ~overrun) == 0) + tty_insert_flip_char(tty, ch, flag); + + /* + * Overrun is special. Since it's reported immediately, + * it doesn't affect the current character. + */ + if (status & ~port->ignore_status_mask & overrun) + tty_insert_flip_char(tty, 0, TTY_OVERRUN); +} + /* * UART_ENABLE_MS - determine if port should enable modem status irqs */ |