diff options
| author | Anton Vorontsov <cbouatmailru@gmail.com> | 2010-10-01 17:21:25 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-10-22 10:20:07 -0700 |
| commit | 54381067ed7873e6173d6fe32818a585ad667723 (patch) | |
| tree | 188acc1fdb9741188cfa3be68b20c76607a70135 /include/linux/serial_core.h | |
| parent | 8ee16a1b8985ac930d293553f589b5894eb6a60e (diff) | |
| download | linux-54381067ed7873e6173d6fe32818a585ad667723.tar.gz linux-54381067ed7873e6173d6fe32818a585ad667723.tar.bz2 linux-54381067ed7873e6173d6fe32818a585ad667723.zip | |
serial: Factor out uart_poll_timeout() from 8250 driver
Soon we will use that handy function in the altera_uart driver.
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/serial_core.h')
| -rw-r--r-- | include/linux/serial_core.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 563e23400913..ac48082f3559 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -411,6 +411,14 @@ unsigned int uart_get_baud_rate(struct uart_port *port, struct ktermios *termios unsigned int max); unsigned int uart_get_divisor(struct uart_port *port, unsigned int baud); +/* Base timer interval for polling */ +static inline int uart_poll_timeout(struct uart_port *port) +{ + int timeout = port->timeout; + + return timeout > 6 ? (timeout / 2 - 2) : 1; +} + /* * Console helpers. */ |