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| author | Rafael Gago <rafael.gago@gmail.com> | 2017-07-31 10:46:43 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-28 20:51:20 +0200 |
| commit | 6e0a5de2136b26bd0b3501f2f362abfffeb47d1e (patch) | |
| tree | 7ee3baed1bbcf78c70c378a3cb909c1583a6041a /include/linux/serial_8250.h | |
| parent | a6845e1e1b781933ed7f54919f5ea4a108d1b9f2 (diff) | |
| download | lwn-6e0a5de2136b26bd0b3501f2f362abfffeb47d1e.tar.gz lwn-6e0a5de2136b26bd0b3501f2f362abfffeb47d1e.zip | |
serial: 8250: Use hrtimers for rs485 delays
Previously the timers where based on the classic timers, giving a too
coarse resolution on systems with configs of less than 1000 HZ.
This patch changes the rs485 timers to hrtimers.
Signed-off-by: Rafael Gago Castano <rgc@hms.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/serial_8250.h')
| -rw-r--r-- | include/linux/serial_8250.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h index 61fbb440449c..a27ef5f56431 100644 --- a/include/linux/serial_8250.h +++ b/include/linux/serial_8250.h @@ -80,9 +80,10 @@ struct uart_8250_ops { }; struct uart_8250_em485 { - struct timer_list start_tx_timer; /* "rs485 start tx" timer */ - struct timer_list stop_tx_timer; /* "rs485 stop tx" timer */ - struct timer_list *active_timer; /* pointer to active timer */ + struct hrtimer start_tx_timer; /* "rs485 start tx" timer */ + struct hrtimer stop_tx_timer; /* "rs485 stop tx" timer */ + struct hrtimer *active_timer; /* pointer to active timer */ + struct uart_8250_port *port; /* for hrtimer callbacks */ }; /* |